FMA Cellpro Multi4 User manual

20
090126
FMA limited warranty
FMA, Inc. warrants this product to be free of manufacturing defects for the term of one year from the date of pur-
chase. Should any defects covered by this warranty occur, the product shall be repaired or replaced with a unit of
equal performance by FMA or an authorized FMA service station.
Limits and exclusions
This warranty may be enforced only by the original purchaser, who uses this product in its original condition as
purchased, in strict accordance with the product’s instructions. Units returned for warranty service to an FMA
service center will be accepted for service when shipped postpaid, with a copy of the original sales receipt or war-
ranty registration form, to the service station designated by FMA.
This warranty does not apply to:
 Consequential or incidental losses resulting from the use of this product.
 Damage resulting from accident, misuse, abuse, neglect, electrical surges, reversed polarity on connectors,
lightning or other acts of God.
 Damage from failure to follow instructions supplied with the product.
 Damage occurring during shipment of the product either to the customer or from the customer for service
(claims must be presented to the carrier).
 Damage resulting from repair, adjustment, or any alteration of the product by anyone other than an authorized
FMA technician.
 Installation or removal charges, or damage caused by improper installation or removal.
Call [phone] for more information about service and warranty repairs.
Quick start for the Cellpro Multi4 Charger
Refer to manual for complete operating details.
A. Connect charger to a 12V to 16V (maximum), 5Apower source.
B. At Welcome screen, press Mode button to display Preset Menu.
C. In Preset Menu, press Mode button to display User Preset for pack you want to charge.
D. Connect pack to charger.
E. Press and hold Mode button. When you see START CHARGE, release Mode button. Display
briefly shows CHECKING PACK.
F. Next screen displays preset’s chemistry and prompts you to verify it is same as pack’s chem-
istry. This is a safety check.
 If displayed chemistry matches pack chemistry, press Mode button to start charging. Go
to step G.
or
 If displayed chemistry does not match pack chemistry, do nothing. Screen will time out
and Preset Menu will be displayed. Go to step C.
G. During charging:
 Press Mode button to view charging data screens.
 To stop charging:
a. Press and hold Mode button to see STOP CHARGE? >No.
b. Press Mode button to see STOP CHARGE? >Yes. Press and hold Mode button.
c. When you see CHARGER STOPPED, press Mode button to see Preset Menu (step C).
H. When charging is complete, charger beeps three times repeatedly and displays ELAPSED
[time] / [chemistry] DONE. Press Mode button to review charging data screens.
I. Disconnect pack from charger. Display shows PACK REMOVED.
J. Press Mode button to return to Preset Menu.
Cellpro Multi4 Charger
Model LC04S04A-MC, for use with LiPo, Li-Ion, A123,
NiCd, NiMH and Lead Acid battery packs
Automatic and manual charge rates at up to 4A with
overcharge protection and cell balancing (for packs with
node connectors)
FMA, Inc.  5713 Industry Lane, Suite 50  Frederick, MD 21704
Sales: [phone]
 Technical: [phone]  www.fmadirect.com
Features
 Simple to operate: just connect the Cellpro Multi4 Charger between a power source and
a pack, select a pack-specific preset and start charging. No jumpers, plugs or dials to set!
Charger automatically determines pack capacity and sets optimal current, then dynamically
adjusts charge rate as needed. Manual charge rates up to 4.0A allow for special situations.
 Charges LiPo, Li-Ion, LiFePO4,A123©, LiMn, NiCd, NiMH and Lead Acid chemistries
(adapters for many node connector types are available from FMA Direct). Supports both bal-
anced (depending on chemistry) and non-balanced charging (with certain safety limitations).
 Charger holds up to 25 user configurable presets (User Presets), optimized for the different
chemistries, providing charging strategies for most common RC charging needs. Charger also
holds up to 50 Library Presets. When using the free Charge Control Software, the number of
custom presets is virtually unlimited and will grow over time to meet industry needs. Replace
and customize presets to match your battery inventory.
 Charges Lithium (2s to 4s balanced charge, 1s to 2s unbalanced charge) and A123 packs (2s
to 4s balanced, 1s to 5s unbalanced) in any capacity up to 32Ah. During balanced charging,
each cell is charged independently, providing exceptional charging safety and elevating RC
packs to the safety level of cellphones. Typical packs of up to 4Ah capacity charge in 50
minutes or less using charger’s 2C Auto Current Mode.
 Latest technology provides the ultimate in safety—even charges packs having hidden physical
damage without danger of fire. A pack will not charge if individual cell voltages don’t equal
total pack voltage.
 Cell balancing to 5mV and automatic overcharge protection assure longest pack life. Auto-
matic temperature monitoring prevents pack overcharging at low ambient temperatures and
charger damage at high ambient temperatures.
 Multifunction backlit display lets you select presets, replace default presets from a library
and shows charging data such as individual cell voltages, charge current, supply voltage, and
amount of charge (mAh) put into pack. Plus, the unique Fuel display shows percent capacity
in a pack.
 Charge Control Software (CCS, a free download) allows you to customize, save and load pre-
sets (including charger data displays), and view real-time charging data and graphs. CCS also
manages firmware updates to keep your charger operating smoothly.
 Operates from any 10–16V DC power source. Inputs and outputs are protected against re-
verse polarity.
Precautions
 Follow all instructions in this manual to assure safe operation.
 Always watch LiPo packs while they are charging. Never leave LiPo packs unsupervised
during charging.
 See additional warning sheets provided with this charger and FMALiPo packs.
 Follow all guidelines for charging, discharging, handling and storing packs of all kinds.

2Connecting the charger
Connecting packs with a Cellpro connector
Connect packs as shown in this diagram:
Connect to 10–16 VDC
(e.g., gel cell or power supply)
Optional connection to PC
using FMA FUIM2
or FUIM3 cable
Cellpro Multi4 Charger
From pack being charged:
Node Connector*
(for balanced or unbalanced
charging)
or
Power Connector*
(for unbalanced charging)
*may require adapter
Mode
Button
Data display
CAUTION: When two LiPo/Li-Ion/A123 packs are connected in series, do not connect
them to two separate chargers that are wired to a single power source. This sets up the
condition in which the series-connected packs are being charged in parallel (the power
source provides a common ground). The Multi4 Charger contains protective circuitry
that prevents it from starting a charge when it detects this situation. However, one
or both chargers, as well as the packs, could be damaged. This condition can be
avoided if the chargers are driven from two unconnected power sources (e.g., two lead
acid batteries). For safest charging of series-connected packs, disconnect the packs
from each other before connecting them to chargers.
Connecting non-Cellpro packs
FMA Direct offers plug-and-play adapters for charging LiPo/Li-Ion/A123 packs equipped
with node connectors made by other vendors. Check the Cellpro section at www.fmadirect.
com for the latest adapters.
If an adapter isn’t available for the pack you want to charge, or if the pack doesn’t have a
node connector, the FMA CPBP7 LiPo Pack Node Connector cable assembly will make the
pack compatible with the Cellpro Multi4 Charger. The diagrams below show how the Node
Connector attaches to packs of various configurations. Additional assembly information is
provided with the Node Connector.
Pin 1
FMA CPBP7 LiPo Pack
Node Connector
n1
Red
Black
Pack positive
Node 3
Node 2
Node 1
Pack negative
Cell 4
+
–
Cell 3
+
–
Pack positive
(red), 14.8V*
Pack negative
(blk), 0V
Node 3, 11.1V*
Cell 2
+
–
Node 2, 7.4V*
4s Pack
Cell 1
+
–
Node 1, 3.7V*
Cell 3
+
–
Cell 2
+
–
Node 2, 7.4V*
3s Pack
Cell 1
+
–
Node 1, 3.7V*
Pack postive
(red), 7.4V*
Pack negative
(blk), 0V
Pack postive
(red), 11.1V*
Pack negative
(blk), 0V
Cell 2
+
–
2s Pack
Cell 1
+
–
Node 1, 3.7V*
* Nominal voltage with respect to pack negative.
19
Troubleshooting
Operating errors appear as safety codes in the display. If possible, correct the error. If errors
continue, contact FMA Customer Service.
Code Cause
1 Increase Supply
2 Supply <10 Volts
3 Supply >16 Volts
4 Supply Unstable
5 Prset not for 4S
6 Bad Preset Versn
7 Reduce NiCd Amps
8 Series Chrgrs?
9 P. Library Empty
10 Low Voltage Cell
11 Preset is Hidden
12 Reverse Polarity
13 Preset is Empty
14 MODE not Pressed
15 System Softstart
16 Preset is Locked
17 Ch1 No Add Up
18 Max Cells Error
19 No Pack
20 Bad Cell Count
21 Bad P. Ram Check
22 Cells Exceeded
23 Un-Bal. Only
24 Charge Timeout
25 Cell Cnt Changed
26 NiCd Detected
27 Cells no Correct
28 Cell OverVoltage
78 High Voltage When Off
79 CH1 Cells Out of Range
88 Checkpack1 Cell V Out of Range
90 Unknown Screen Number
92 Mux Number Error
93 Calibration Checksum Bad
Code Cause
94 Bad EEPROM Write
95 Bypass Overvolt
96 PWM Ratio Too High
97 Bad FET Supply Voltage
98 Charger Overcurrent
99 Bad Mode Number
100 Temp out of Rnge
105 Preset not validated
106 Preset number out of range
107 Charge Timeout out of range
108 Preset loaded while charging
109 Charge Termination Unknown
111 Preset Cell OverVolts too High
112 Options Checksum is BAD
113 Charge PWM not regulating
114 Bad Preset Flash Checksum while
running
115 Bad Preset Flash Checksum on Start
116 Bad Preset Ram Checksum on Start
117 Bad Segment Checksum on Start
118 Bad Segment Checksum while running
120 Lithium Cell Count not Verified
121 Shunt FET off while CHG/DSCH
122 Unknown Chemistry
123 No Charge Screens to Show
124 Bad Run Screen Number
125 Cell Count is Zero
126 Discharge Mode not set to Balancer
127 Discharge Mode Timeout
128 Peek Detect set past 15 min
129 NiCd Chem must use FallBack
130 Lith Chem must not use FallBack
131 Oscillator Calibration Erased

18
Estimating performance factors
If you don’t have a way to directly measure your propulsion system’s electrical parameters, the
Cellpro Multi4 Charger enables you to estimate them using before- and after-flight measure-
ments.
1. Collect data
a. Charge pack.
b. When charging is finished, record Fuel % and total pack voltage (i.e. sum of cell volt-
ages).
c. Fly plane (or test on the ground). Record flight time in minutes.
d. Connect pack to charger. Record Fuel % and total pack voltage.
2. Calculate performance factors
(Fuel % before flight) – (Fuel % after flight)
100 x (Pack capacity, Ah) = Capacity consumed during flight, Ah
(Capacity consumed during flight, Ah) x 60
(Flight time, minutes) = Average current during flight, A
(Pack voltage before flight, V) + (Pack voltage after flight, V)
2= Average voltage during flight, V
(Average voltage during flight,A) x (Average current during flight, V) = Average power during flight, Watts
The “LiPo Performance Estimator” spreadsheet, which simplifies these calculations, can be
downloaded from www.fmadirect.com/tech_data/techdocs/.
3. Evaluate results
 Average current during flight gives you a rough idea whether system components—ESC,
motor, connectors and wiring—are operating within their current ratings. Keep in mind that
peak current during flight may greatly exceed the average current you calculated.
 Watts per pound is an approximate indicator of aircraft performance (other factors influenc-
ing performance include lift, drag and motor type). Here are some guidelines:
 25 to 30 watts per pound: level flight.
 40 to 50 watts per pound: take off from smooth surface, climb.
 50 to 75 watts per pound: take off from grass, sport aerobatics.
 75 to 125 watts per pound: pattern aerobatics.
 Over 125 watts per pound: 3D.
Tip: For more direct electrical measurements, consider these FMAproducts:
 60A Current Shunt (Model DVM-SHUNT-60)
 Digital Multimeter (Model DVM-VC890D)
(Average power during flight, Watts)
(Model weight, pounds) = Watts per pound
3
Charging a pack
As shipped from the factory, the Multi4 Charger is equipped with 20 User Presets optimized for
common battery types, plus five Empty Presets. In many cases, you can simply select the User
Preset that matches the pack you want to charge, connect the pack and start charging.
User Presets cover LiPo, Li-Ion, A123, NiCd, NiMH and Lead Acid chemistries paired with
commonly-used charging strategies. (If the User Presets aren’t quite what you need, see the in-
structions beginning on page 6.) The charger also includes a Preset Library containing up to 50
presets. A Library Preset is like a User Preset, except that it must be loaded into the User Preset
bank before it can be changed and used for charging (see “Loading a Library Preset,” later).
1. Connect the charger to a 12V to 16V (maximum), 5A power source. You can connect the
pack any time between now and step 4.
2. The first screen you will see is the Welcome screen. Press and release the Mode button to
display the Preset Menu.
Tip: More information about the display—and how to navigate it—is provided on the
next page.
3. The Preset Menu displays last User Preset you used. If this is the User Preset you want to use
to charge the pack, go to step 4.
otherwise
Press the Mode button until the User Preset you want is displayed (see “Factory-installed
User Presets” for descriptions). (If you see EMPTY PRESET, press the Mode button to go
back to the beginning of the list.)
Tip: Quickly press and release, press and hold, then release the Mode button to re-
verse the sequence of items being displayed in the Preset Menu. The tone indicates
which direction you are going: high tone for forward, low tone for reverse.
4. If the pack isn’t connected to the charger, connect it now.
5. Press and hold the Mode button. This displays the Operations Menu, which cycles through
several screens. When you see START, release the Mode button.
6. The display will briefly show CHECKING PACK.
7. The next screen displays the preset’s chemistry (for example, LiPo) and prompts you to
verify it is the same as the pack’s chemistry (which should also be, for example, LiPo). This
safety check is your chance to prevent charging if the preset and pack don’t match.
 If the displayed chemistry matches the pack’s chemistry, press the Mode button to start
charging. Go to step 8.
or
 If the displayed chemistry does not match the pack’s chemistry, do nothing. The screen
will time out, and you will be returned to the Preset Menu. Go to step 3.
8. During charging:
 Press the Mode button to view various charging data screens (the number of screens and
the data displayed depends on how the User Preset is configured).
 To stop charging:
a. Press and hold the Mode button. You’ll see Stop Charge? >No.
b. Press the Mode button to see Stop Charge? >Yes. Press and hold the Mode button.
c. You’ll see CHARGER STOPPED. Press the Mode button to go to the Preset Menu.
9. When charging is complete, the charger will “beep beep beep” several times and the display
will show ELAPSED [time] / [chemistry] DONE. Press the Mode button to review
charging data screens.
10.Disconnect the pack from the charger. The screen displays PACK REMOVED.
11.Press the Mode button to return to the Preset Menu. The charger is ready to charge another
battery.

4Navigating the charger’s screens
This diagram will help you understand how to move from screen to screen using the Mode but-
ton. There are four basic things you can do with the Mode button, as indicated in the diagram:
 Press: press and release the Mode button. In most cases, the next screen is displayed.
 Press & Hold: press and hold the Mode button.
 Release: release the Mode button after you press and hold it.
 “Reverse Press”: Quickly press and release the Mode button, then press and
hold it, then release it to reverse the sequence items are displayed in certain lists
(high tone = forward, low tone = reverse).
[last-used
user preset†]
Cellpro Multi4
Firmware vX.XX
Press
Press
[next preset†]
Press
[next preset†]
Press
Etc.
[next preset†]
Press
START CHARGE
Press
& Hold
CHOOSE CHG. RATE
CLEAR PRESET
EXIT
Preset Menu
Operations Menu
Release
Release
Return to preset previously
selected in Preset Menu
Release
Return to preset previously
selected in Preset Menu
Note: Operations selected in Operations Menu apply to
preset selected when you Press & Hold in Preset Menu.
Apply power
“Reverse Press” to reverse sequence*
*Tone changes to
indicate direction:
High tone = forward
Low tone = reverse
Press
PRESET LIBRARY
Release
Release See
page 6
†If slot is empty,
display shows
EMPTY PRESET
17
Charger specifications
For battery types Lithium Polymer (1s to 4s balanced, 1s to 2s unbalanced)*
Lithium Ion (1s to 4s balanced, 1s to 2s unbalanced)
Lithium Manganese (1s to 4s balanced, 1s to 2s unbalanced)
A123 (2s to 4s balanced, 1s to 5s unbalanced)*
NiCd (1s to 12s)
NiMH (1s to 12s)
6V and 12V Lead Acid batteries
Pack capacity 5mAh to 32Ah (charge time limited to maximum of 8 hours)
Input voltage 10 to 16VDC, reverse polarity protected
Input current 5A maximum
Power conversion 125kHz switcher operating at 90% efficiency
Output current Up to 4A
Cell balancing To within 5mV for 2s to 4s LiPo, Li-Ion, Li-Mn or A123 packs
Voltage calibration Cell voltage measurements are factory calibrated to a standard
traceable to NIST; calibration is to ±6mV
Current calibration Charge current is factory calibrated on a 4A standard; calibration is to
±1mA
Measurement accuracy Voltage: ±6mV
Charge current: ±1%
Capacity added to pack: ±1%
Percent capacity (“Fuel”): ±5%
Serial data output 19.2kbps, 8 bits, 1 start bit, 1 stop bit, no parity
*charger can be used with balanced 2s to 4s packs having a node connector (an
appropriate FMA adapter may be required)
Working with files
 To save a single preset: In the Presets tab, select the preset, then File > Save Preset nto
File... .
 To load a single preset: In the Presets tab, select the preset, then File > Open File to
Preset n... .
 To back up all User Presets: File > Backup User Presets... .
 To restore User Presets: File > Restore User Presets... .
 To back up all Library Presets: File > Backup Library Presets... .
 To restore all Library Presets: File > Restore Library Presets... .
CCS file types
.pst Single preset file .psk User Presets backup file
.lpb Library Presets backup file .cp4 Charge graph file

16
Updating charger firmware
The Charge Control Software automatically checks for new firmware each time it is launched
(assuming the computer is connected to the Internet). If new firmware is available, it is down-
loaded to your computer. When you are ready to update the charger:
1. Be sure the charger is connected to the computer, and is powered up.
2. Disconnect all packs from the charger.
3. In the Charge Control Software window, click the Firmware tab.
4. Select the firmware you want to download.
5. Click Update Firmware.
6. Wait—and do nothing to the PC, charger and interconnection—until updating is complete.
IMPORTANT: During firmware downloading, do not disconnect the charger from
power, do not disconnect the charger from the computer, and do not exit the Charge
Control Software.
Configuring User Presets
The Charge Control Software gives you almost total control over User Presets, including which
ones are available in the charger, the order in which they are displayed, charging characteristics
and the content and order of data screens displayed during charging.
1. Be sure the charger is connected to the computer, and is powered up.
2. In the Charge Control Software window, click the Presets tab. The left panel lists User Pre-
sets stored in the charger, and the right panel lists parameters and screens for the User Preset
selected in the left panel.
3. Then:
 To change preset order: In the left panel, drag the preset number up or down.
 To prevent a preset from being displayed in the charger: Open the list next to the preset
and click Hide.
 To configure a preset: Select the preset in the left panel, then...
 To change charge characteristics: Click the Properties tab in the right panel, then set
options as needed.
 To change charge data screens: Click the Screens tab in the right panel, then...
 To show or hide a data screen: Select Show or Hide as appropriate.
 To change screen order: Drag the screen number up or down.
4. Click Update Charger.
or
If you don’t want to apply the changes, click Cancel.
Note: The Charge Control Software performs extensive checks to make certain you
have specified permissible charge parameters. If it finds errors, it will not download
presets to the charger until the errors are corrected. Errors are displayed in the Errors
tab. To correct an error, double-click the error in the Errors tab; you will be taken to the
corresponding preset property, which you can change to an acceptable value.
5
CHECKING PACK
[chemistry]
Press to Verify
MODE not pressed
Push to Reset
CHARGING Press
MODE for info.
STOP CHARGE?
>Yes
STOP CHARGE?
>No
CHARGER STOPPED
[various charge
data screens]
Press Press
& Hold
Press
Press
Timeout
Press
[library preset]
Press
[next preset]
Press
Etc.
[last preset]
Press
Press
& Hold
Replace Preset
from Library? >N
Replace Preset
from Library? >Y
Press
Press Press
& Hold Overwrite preset selected
in Preset Menu with
selected Library Preset.
or
Create new preset if
EMPTY PRESET was
selected in Preset Menu.
CHOOSE CHG. RATE
Charge @ [value]
Press for
next value
Press
& Hold Apply selected charge
rate to preset selected in
Preset Menu.
Note: Press ONLY if displayed
chemistry is same as pack chemistry.
Note: Press & Hold when desired
Library Preset is displayed.
Press
& Hold
Elapsed [time]
[chemistry] DONE
Charging
Choose Preset from Library
Choose Charge Rate
Press
& Hold
Press
Press
Press
& Hold
“Reverse Press” to
reverse sequence
“Reverse Press” to reverse sequence*
Press
Press
Press
& Hold
Press
& Hold
[various charge
data screens]
PACK REMOVED
Disconnect
pack from
charger
Press
Charge complete
Press
& Hold

6Changing a User Preset’s charge rate
You can change the charge rate for any User Preset. The new rate is retained (even after power is
cycled) until you change it again (this behavior can be changed via Charge Control Software).
1. Navigate to the Preset Menu.
2. If the User Preset you want to change is displayed, go to step 3.
otherwise
Press the Mode button until the preset you want is displayed.
3. Press and hold the Mode button. This displays the Operations Menu, which cycles through
several screens. When you see CHOOSE CHG. RATE, release the Mode button.
4. The display now shows the preset’s charge rate (on the bottom line).
5. Press the Mode button to cycle through available charge rates (some rates are currents [Aor
mA], others are multiples of pack capacity [C]; the list wraps around).
Tip: Quickly press and release, press and hold, then release the Mode button to re-
verse the sequence of charge rates. This enables you to go back to a rate, rather than
running through the entire list. The tone you hear when you press the Mode button indi-
cates which direction you are going: high tone for forward, low tone for reverse.
Tip: Currents change in 5mAincrements for small packs, and in 0.250A increments for
large packs (depending on how presets are configured).
6. When the charge rate you want is displayed, press and hold the Mode button. This applies
the charge rate to the preset and returns you to the Operations Menu.
7. In the Operations Menu, release the Mode button when you see the operation you want.
Clearing a User Preset
You can remove User Presets you don’t need. For example, if you don’t regularly charge A123
and Lead Acid batteries, you can remove those to limit the Preset Menu to the presets you do use.
The first 20 presets in the Preset Library are the same as the 20 factory-installed User Presets (see
list and descriptions later in this manual), so you can easily restore any presets you remove.
1. Navigate to the Preset Menu.
2. If the User Preset you want to remove is displayed, go to step 3.
otherwise
Press the Mode button until the preset you want is displayed.
3. Press and hold the Mode button. This displays the Operations Menu, which cycles through
several screens. When you see CLEAR PRESET, release the Mode button.
4. You are prompted to confirm your action with the message CLEAR PRESET?. Press the
Mode button to switch between confirming the removal (>Yes) or denying the removal
(>No).
5. When you have selected the desired response to the prompt, press and hold the Mode button.
If you selected Yes in step 4, the preset is deleted.
6. You are returned to the Operations Menu. Release the Mode button when you see the opera-
tion you want.
Tip: If you are using the Charge Control Software, you can shorten the Preset Menu by
hiding User Presets you don’t use, as well as hiding Empty Presets. See “Configuring
User Presets,” later in this manual.
15
Monitoring charging operations
 When you start a charge at the charger, the CCS opens a dialog that enables you to save the
charge graph.
 To save the graph: Enter a name for the graph, navigate to the directory where you want
to save it, then click Save. (If you keep the default name and location, the graph previ-
ously saved there will be overwritten.)
 To prevent saving of the graph: Click Cancel.
 To monitor cell voltages, total pack voltage and related charging parameters during charg-
ing:Click the Cells tab.
 To view charge parameter graphs: View > Graphs. In the Graph window:
 To view volts for individual cells: View > Cell Volts.
 To view total pack voltage: View > Pack Volts.
 To view current: View > Amps.
 To view fuel level: View > Fuel.
 To print a graph: File > Print.
Limiting charger input current
The charger will draw up to 5Ato deliver its 4A maximum output current. The high input cur-
rent is required when the input voltage must be boosted to drive packs having larger numbers
of cells in series. The charger monitors input current from the power supply, and automatically
reduces pack charge current if it determines that the power supply can’t keep up.
You can also manually limit the charger’s input current so the charger will not draw more power
than the supply can provide. If you know your power supply is rated for 3A output, for example,
you can limit the charger’s input current to 3A. This feature prevents damage to power supplies,
such as bench supplies, having low to moderate output currents. (Be aware that limiting charger
input current may increase pack charge times.) When the charger is powered from a high current
source (such as a car battery), you can override manual current limiting to provide maximum
pack charging current.
 To monitor supply voltage: Click the Supply tab.
 To manually set input current limiting:
1. In the Supply tab, select the desired maximum current in the Current Limit dropdown list.
2. Click the Update Charger button.
 To override manual input current limiting at the field without using the Charge Control Soft-
ware:
1. Press and hold the charger’s Mode button.
2. Connect the charger’s input cables to the power source.
3. When you see characters in the charger’s LCD display, release the Mode button.
Note: If manual input current limiting is in effect, you must repeat this procedure each
time you apply power to the charger if you want the charger to operate at full input cur-
rent.
Setting charger options
1. Click the Options tab.
2. Set options as desired.
3. Click Update Charger.
Graphs available depend on
the selected User Preset.

14
Using the Charge Control Software
The free Cellpro Multi4 Charge Control Software (CCS) gives you unparalleled ability to cus-
tomize your charger. Using the CCS, you can
 Show, hide, reorder, save, load and share User Presets.
 Modify up to 80 parameters that define how a User Preset operates.
 For each User Preset, customize the content and order of screens—including the welcome
screen and charging data screens—that appear in the charger’s LCD display.
 Monitor individual cells and the power supply during charging.
 Follow charging progress in real-time graphs.
 Update the charger’s firmware.
 Modify the charger’s display and audio settings.
Installing the Charge Control Software
For detailed information on installing the Cellpro Multi4 Charge Control Software, please visit
the install page at
www.fmadirect.com:80/new_applications/software/Multi4_software.html
Launching the Charge Control Software
1. Start > All Programs > FMA Direct > Cellpro Multi4.
2. If your computer is connected to the Internet, the program will check to see whether a new
version of the CCS and/or charger firmware is available. If new software/firmware is avail-
able, you will have the option to install the new version(s) or launch the CCS version you
already have. (Remember, Internet Explorer must be the default browser for updates.)
3. If you download a new version of the CCS, it will automatically install and launch itself. (If a
new firmware version was included in the download, see “Updating charger firmware,” later
in this manual, for instructions.)
Connecting the charger to your computer
1. If the Charge Control Software isn’t running, launch it now.
Note: If this is the first time you are connecting the charger to the PC, click Download
USB Driver in the lower left corner of the CCS window. Follow onscreen instructions to
install the driver for your PC interface (FUIM2 or FUIM3). Exit and relaunch the CCS.
2. Plug the FUIM2 or FUIM3’s 3-pin connector into the jack on the charger’s left side. The
black wire should be toward the top of the charger’s panel.
3. Plug the FUIM 2 or FUIM3’s USB connector into your computer.
4. Apply power to the charger.
5. Waiting to Start above the tabs confirms that the Charge Control Software and charger are
communicating. (No Data from Charger indicates a communication problem.)
7
Other User Preset operations
 To remove a User Preset: See “Clearing a User Preset.” Thereafter, that slot will show EMP-
TY PRESET until you load a Library Preset into it.
 To load a Library Preset into any slot: See “Loading a Library Preset.” If the slot was empty,
this will create a new User Preset; if the slot already had a User Preset, this will overwrite it.
 To back up and restore presets using the Charge Control Software: See “Working with
files.”
Strategies for organizing User Presets
Suppose all your packs can be handled with a small group of User Presets, and you don’t need
any of the other User Presets (at least not now). What’s the most efficient way to organize your
core presets?
 If you aren’t using the Charge Control Software: Follow the instructions in “Loading a Li-
brary Preset” to put your core presets in adjacent slots. Use the instructions in “Clearing a
User Preset” to remove the User Presets you don’t need. Now, when you move through the
Preset Menu on the charger, use the “reverse press” technique when you see EMPTY PRESET
in the display—that will let you quickly move forward and back through your core presets.
 If you are using the Charge Control Software: In the Presets tab, drag the presets you want
to the top of the list. For the presets you don’t need, set their visibility to Hide. Finally, click
Update Charger. Now, only your core User Presets will appear in the Presets Menu. (De-
tails are in “Using the Charge Control Software.”)

8Factory-installed User Presets
1 LiPo Generic Accurate Charge. Basic LiPo preset can be used for any LiPo battery. Fuel
Table is optimized for generic LiPo batteries from C discharge ratings up to 20C.
Selectable charge rates include 1C, 2C, 3C AUTO or 0.25A to 4.0A manual.
Optimization is for the most accurate charging with termination settings of C/20 and
max of 30 min timeout for C.V. mode. This preset requires that every cell in the
battery is charged to exactly 100%. If using high C rate discharge batteries (25C
and higher), Fuel Gauge readout may not be accurate and AUTO charge rate may
be higher or lower than expected. Default charge rate setting is 1C AUTO.
2 LiPo Generic Faster Charge. Basic LiPo preset can be used for any LiPo battery. Fuel
Table is optimized for generic LiPo batteries from C discharge ratings up to 20C.
Selectable charge rates include 1C, 2C, 3C AUTO or 0.25A to 4.0A manual.
Optimization is for faster charging with termination settings of C/10 and max of
5 min timeout for C.V. mode. This preset does not require that every cell in the
battery is charged to exactly 100%. If using high C rate discharge batteries (25C
and higher), Fuel Gauge readout may not be accurate and AUTO charge rate may
be higher or lower than expected. Default charge rate setting is 2C AUTO.
3 LiPo Generic Long Life (4.1v). Basic LiPo preset copied from Preset 1 above but with end-
charge voltage reduced to 4.1v. Use this preset if you wish to have the longest life
from your LiPo batteries, but be aware, your flight times will be reduced slightly.
Fuel Table is optimized for generic LiPo batteries from C discharge ratings up to
20C, but table is revised to correlate to lower end charge voltage.
4 LiPo Generic Small Balanced. Special LiPo preset designed for charging small batteries
but still using balance connector. This preset is recommended for battery sizes as
small as 5 mAh and up to 500 mAh. Preset requires manual charge rate settings
of between 5 and 500 mA in 5 mA increments. Fuel Table is optimized for generic
LiPo batteries from C discharge ratings up to 20C.
5 LiPo 1s/2s Small Non Balanced. Special LiPo preset designed for charging small Park Flier
type batteries that are not equipped with balance connectors. Be cautious when
charging any LiPo battery non-balanced. The charger is not capable of detecting
imbalance between cells. Never charge unattended using this preset. Fuel Table
is optimized for generic LiPo batteries from C discharge ratings up to 20C. This
preset has termination characteristics similar to Preset 2 above for faster top off.
6 LiPo All Brands Storage Charge. Special LiPo preset designed to storage charge a
discharged battery up to 3.86v per cell. This preset will only work if the battery is
below the storage charge voltage when connected. Manual charge rate setting is
required when using this preset and ranges from 0.25A to 4.00A. Default setting is
2.0A.
7 LiPo REVO Black Accurate Charge. Brand Specific LiPo preset similar in all regards to
Preset 1 above, but with Fuel Table optimized for REVOLECTRIX “Black Label”
batteries. If used with other brands, the Fuel Gauge readout may not be accurate
and AUTO charge rate may be higher or lower than expected. Default charge rate
setting is 1C AUTO.
8 LiPo REVO Black Faster Charge. Brand Specific LiPo preset similar in all regards to Preset
2 above, but with Fuel Table optimized for REVOLECTRIX “Black Label” batteries.
If used with other brands, the Fuel Gauge readout may not be accurate and AUTO
charge rate may be higher or lower than expected. Default charge rate setting is
2C AUTO.
9 LiPo REVO Black Long Life (4.1v). Brand Specific LiPo preset similar in all regards to Preset
3 above, but with Fuel Table optimized for REVOLECTRIX “Black Label” batteries.
If used with other brands, the Fuel Gauge readout may not be accurate and AUTO
charge rate may be higher or lower than expected. Default charge rate setting is
2C AUTO.
13
Storing packs
 For best results, LiPo and A123 packs should be stored at 50% of capacity. Use the charger’s
LiPo All Brands Storage Charge preset to prepare LiPo packs for storage, and the
A123 All Cpcty Storage Charge to prepare A123 packs for storage.
CAUTION: Be sure the storage preset matches the battery chemistry. Using the incor-
rect preset will damage cells.
 LiPo packs charged to 100% should not be cooled below room temperature. Cells at 90% or
less capacity can be cooled below 32ºF (0ºC).
How Auto Current Mode works
The Multi4 Charger’s Auto Current Mode (indicated by the charge rateAx.0C) precisely moni-
tors individual cell fuel levels (cell voltages) in a LiPo, Li-Ion or A123 pack. If the charger de-
termines it is charging too fast, it slows down. Likewise, if it is charging too slow, it speeds up.
The charger adjusts charge current at one minute intervals throughout the charge cycle.
When charging starts, it takes a short time for the charger to determine the correct parameters, so
it may “hunt” for up to 30 minutes before it settles on the optimum current. This is normal, and
doesn’t harm the pack. The longer the charge, the more accurate the calculation.
The plot below shows how Auto Current Mode adjusts the charger’s current when charging a
2.1Ah pack at 1.0C Auto. Initially, charge current is 500mA(this starting current is defined in
the User Preset and is adjustable). Within a few minutes, the charger increases the current, and
it eventually reaches 1.0C (1.9A in this example). This is slightly under the ideal 1.0C charge
rate of 2.1A for this pack. Fuel rate Auto charging is intentionally calculated to be slightly
conservative. Current drops as the pack reaches full charge (the charger changes to constant
voltage mode). When charge current drops to about 0.05C, the pack is fully charged. If the cells
are balanced, charging terminates. Termination settings are also controlled by the User Preset
parameters.
With the 1.0C Auto Current Mode, a fully discharged pack is charged to its nominal capacity in
about 60 to 80 minutes, depending on the state of imbalance. Auto Current Mode takes into ac-
count a pack’s starting charge level, so topping off a 50% discharged pack takes only about 30
minutes.

12
Practical information about the Multi4 Charger
General information
 Because FMA’s cell balancing technology monitors individual cells, you don’t need to cool
a pack before charging it. Go from flying to charging to flying again without waiting. FMA
cell-balancing chargers are the only ones that can charge a pack immediately after discharge
without damaging the pack.
 Cells in a pack have different voltages when they are discharged. The Multi4 Charger bal-
ances (equalizes) cell voltages while it is charging the pack.
 During charging, cells that charge the fastest are the weakest cells in the pack. At the end of
charging, cells with the highest voltage are weakest. This happens because weaker cells have
lower capacity, and they charge faster than stronger cells.
 If the Multi4 Charger displays LOW VOLT RESTORE, the pack was overdischarged during
its last use. The charger will attempt to repair LiPo cells measuring between 0.5V and 2.7V,
or A123 cells measuring 0V to 2.0V. To avoid additional damage to restored cells, do not
overdischarge a repaired pack.
 By definition, end of life for a LiPo cell is when the cell can only be charged to 80% of its
original capacity rating. The number of charge/discharge cycles a cell undergoes before
reaching end of life depends on several factors, including cell quality, discharge rate, inter-
nal heat generated during use, and other parameters. Cells in an older pack may be more
out of balance, but the Multi4 Charger will still balance them to within 5mV by the end of
charge. For this reason, it may take longer to balance older packs. The charger may show
FUEL=99% for several hours while it is balancing a high capacity (3Ah and up) “veteran”
pack that is severely out of balance, but User Presets might be set to stop balancing after a
preset time. Often, the last few millivolts of balancing take a very long time and do not sig-
nificantly improve overall pack charge or performance.
Charging packs
 You can top off packs, or remove them when they are partially charged. There is no way to
damage a pack when using the Cellpro Multi4 Charger.
 If a pack is at 80% or less of its capacity when connected to an auto-detect speed controller,
the controller may lower its cut-off voltage. This could overdischarge the pack during the
flight. Auto-detect speed controllers should properly set cut-off voltage if packs are charged
to at least 90%.
 To save time, stop charging when the pack reaches about 95% of capacity. That last 5% takes
the longest. By default, User Presets notify you with two beeps when a pack reaches 90% of
capacity (that threshold can be easily adjusted using the Charge Control Software).
 Some cells may sag 0.10V within an hour after charging. This is normal as packs age.
 When charging anA123 pack that has been discharged very low, the charger initially may
not be able to accurately count cells in the pack. To eliminate the possibility of an inaccurate
count, the charger applies current to “wake up” the cells, then recounts.
 Overdischarging anA123 pack below 2.0V/cell will damage the cells (contrary to some
reports). The Cellpro Multi4 Charger requires a minimum pack voltage of 1.5V to activate
charging. If an A123 pack is below this voltage, do not try to repair the pack by boosting
voltage. Even if you manage to repair the pack, it will not have many cycles left and the char-
ger will reject it for multiple reasons (as indicated by displayed safety codes).
9
10 A123 2300 mAh Accurate Charge. Optimized for balance charging A123, 2300 mAh battery
packs (requires node wires on the pack). Fuel Table is optimized for this specific
battery type and capacity. Selectable charge rates include 1C, 2C, 3C AUTO
or 0.25A to 4.0A manual. Optimization is for the most accurate charging with
termination settings of C/20 and max of 30 min timeout for C.V. mode. This preset
requires that every cell in the battery is charged to exactly 100%. This preset may
also be used for LiFePO4 type batteries which have similar charge characteristics.
When using LiFePO4 batteries, Fuel Gauge readout may not be accurate and
AUTO charge rate may be higher or lower than expected. Default charge rate
setting is 4.0A manual.
11 A123 2300 mAh Faster Charge. Optimized for balance charging A123, 2300 mAh battery
packs (requires node wires on the pack). Fuel Table is optimized for this specific
battery type and capacity. Selectable charge rates include 1C, 2C, 3C AUTO or
0.25A to 4.0A manual. Optimization is for faster charging with termination settings
of C/20 and max of 15 min timeout for C.V. mode. This preset does not require that
every cell in the battery is charged to exactly 100%. This preset may also be used
for LiFePO4 type batteries which have similar charge characteristics. When using
LiFePO4 batteries, Fuel Gauge readout may not be accurate and AUTO charge
rate may be higher or lower than expected. Default charge rate setting is 4.0A
manual.
12 A123 2300 mAh Non Balanced. Optimized for non-balance charging A123, 2300 mAh
battery packs (node wires not required on the pack). Fuel Table is optimized for
this specific battery type and capacity. Selectable charge rates include 1C, 2C, 3C
AUTO or 0.25Ato 4.0A manual. Optimization is for faster charging with termination
settings of C/10 and max of 15 min timeout for C.V. mode. This preset is not
capable of charging every cell in the battery to exactly 100% because it does not
have access to individual cell voltages. Imbalance will be present at the end of
charge; however, A123 cells are not as sensitive to this problem. Nevertheless,
charging A123’s using the balanced charge preset(s) is recommended whenever
possible. This preset may also be used for LiFePO4 type batteries which have
similar charge characteristics. When using LiFePO4 batteries, Fuel Gauge readout
may not be accurate and AUTO charge rate may be higher or lower than expected.
Default charge rate setting is 4.0A manual. Because this preset is not restricted by
the node connector, it can handle 1-5 cells of this battery type only.
13 A123 1100 mAh Accurate Charge. Optimized for balance charging A123, 1100 mAh battery
packs (requires node wires on the pack). Fuel Table is optimized for this specific
battery type and capacity. Selectable charge rates include 1C, 2C, 3C AUTO
or 0.25A to 4.0A manual. Optimization is for the most accurate charging with
termination settings of C/20 and max of 30 min timeout for C.V. mode. This preset
requires that every cell in the battery is charged to exactly 100%. This preset may
also be used for LiFePO4 type batteries which have similar charge characteristics.
When using LiFePO4 batteries, Fuel Gauge readout may not be accurate and
AUTO charge rate may be higher or lower than expected. Default charge rate
setting is 3.3A manual.
14 A123 1100 mAh Faster Charge. Optimized for balance charging A123, 1100 mAh battery
packs (requires node wires on the pack). Fuel Table is optimized for this specific
battery type and capacity. Selectable charge rates include 1C, 2C, 3C AUTO or
0.25A to 4.0A manual. Optimization is for faster charging with termination settings
of C/20 and max of 15 min timeout for C.V. mode. This preset does not require that
every cell in the battery is charged to exactly 100%. This preset may also be used
for LiFePO4 type batteries which have similar charge characteristics. When using
LiFePO4 batteries, Fuel Gauge readout may not be accurate and AUTO charge
rate may be higher or lower than expected. Default charge rate setting is 3.3A
manual.

10
15 A123 1100 mAh Non Balanced. Optimized for non-balance charging A123, 1100 mAh
battery packs (node wires not required on the pack). Fuel Table is optimized for
this specific battery type and capacity. Selectable charge rates include 1C, 2C, 3C
AUTO or 0.25Ato 4.0A manual. Optimization is for faster charging with termination
settings of C/10 and max of 15 min timeout for C.V. mode. This preset is not
capable of charging every cell in the battery to exactly 100% because it does not
have access to individual cell voltages. Imbalance will be present at the end of
charge; however, A123 cells are not as sensitive to this problem. Nevertheless,
charging A123’s using the balanced charge preset(s) is recommended whenever
possible. This preset may also be used for LiFePO4 type batteries which have
similar charge characteristics. When using LiFePO4 batteries, Fuel Gauge readout
may not be accurate and AUTO charge rate may be higher or lower than expected.
Default charge rate setting is 3.3A manual. Because this preset is not restricted by
the node connector, it can handle 1-5 cells of this battery type only.
16 A123 All Cpcty Storage Charge. Special A123 preset designed to storage charge a
discharged battery up to 3.35v per cell. This preset will only work if the battery is
below the storage charge voltage when connected. Manual charge rate setting is
required when using this preset and ranges from 0.25A to 4.00A. Default setting is
3.0A.
17 NiCd Fast Charge with Trickle. Basic NiCd Fast Charge with Delta Peak Cutoff and Trickle
Charge. Requires manual charge rate setting of between 0.25A and 4.0A, with
default value of 1.0A. Can charge from 1 to 12 cell packs. Fallback default setting
is 8mV. Trickle charge rate is 1/20C of the charge rate setting. Charge will timeout
in 4 hrs if peak is not reached. Trickle charge timeout is set for 1 Day.
18 NiMH Fast Charge with Trickle. Basic NiMH Fast Charge with Delta Peak Cutoff and Trickle
Charge. Requires manual charge rate setting of between 0.25A and 4.0A, with
default value of 1.0A. Can charge from 1 to 12 cell packs. Fallback default setting
is 5mV. Trickle charge rate is 1/20C of the charge rate setting. Charge will timeout
in 4 hrs if peak is not reached. Trickle charge timeout is set for 1 Day.
19 NiCd/NiMH 24 Hr Trickle Charge. Basic NiCd or NiMH 24 Hour Trickle Charge preset.
Requires manual charge rate setting of between 5 mA and 300 mA with default
value of 100 mA. Can charge from 1 to 12 cell packs. Trickle charge timeout is set
for 2 Days.
20 Lead 12v SLA or Gel Cell. Basic Pb (Lead) preset for charging 12v SLA or Gel Cell batteries.
Requires manual charge rate setting of between 0.25A and 4.0A, with default
value of 4.0A. Charges 12v battery only. If you require a 6v charge, this preset is
available in the charger library and can be copied into the user bank (see manual
for instructions). Charge will timeout in 16 hours even if end charge voltage setting
of 14v is not achieved.
21 EMPTY PRESET. May be populated with any preset from the charger library or the FMA PC
library.
22 EMPTY PRESET. May be populated with any preset from the charger library or the FMA PC
library.
23 EMPTY PRESET. May be populated with any preset from the charger library or the FMA PC
library.
24 EMPTY PRESET. May be populated with any preset from the charger library or the FMA PC
library.
25 EMPTY PRESET. May be populated with any preset from the charger library or the FMA PC
library.
11
Loading a Library Preset
The Multi4 Charger is equipped with 50 Library Presets. A Library Preset (which you can’t
change) is a starting point for creating your own User Preset (which you can change). FMA
configures Library Presets with optimal charge characteristics for a variety of battery chemistries
and charging strategies. You can replace an existing User Preset with a Library Preset, or—if
your charger has less than 25 User Presets installed—you can create a new User Preset from a
Library Preset. After you load a Library Preset into a User Preset slot, you change the charge
rate as described earlier in this manual. When using the CCS, you can configure up to 80 charge
parameters in each User Preset.
1. Navigate to the Preset Menu.
2. If the User Preset you want to replace with a Library Preset is displayed, go to step 3.
otherwise
Press the Mode button until the User Preset you want to replace is displayed.
or
If the charger has less than 25 User Presets, press the Mode button until you see EMPTY PRE-
SET (this will enable you to create a new User Preset).
3. Press and hold the Mode button. This displays the Operations Menu, which cycles through
several screens. When you see PRESET LIBRARY, release the Mode button.
4. The display now shows the first of several Library Presets. Press the Mode button to cycle
through available Library Presets (the list wraps around).
Tip: Quickly press and release, press and hold, then release the Mode button to re-
verse the sequence of items being displayed in the Library Preset Menu.
5. When you see the Library Preset you want, press and hold the Mode button, then release it.
6. You are prompted to confirm the replacement. Press the Mode button to switch between con-
firming the replacement (>Y) or denying the replacement (>N).
7. When you have selected the desired response to the prompt, press and hold the Mode button.
If you selected Yin step 6, this copies the Library Preset to the Preset Menu, where it replaces
the selected User Preset or creates a new User Preset.
8. You are returned to the Operations Menu. Release the Mode button when you see the opera-
tion you want.
Open architecture presets
The Multi4 Charger can be described as being “preset driven.” All major aspects of its operation
are defined as parameters at the preset level. The fact that you (for the most part) can set these
parameters introduces the concept of “open architecture presets.”
As an example of how preset parameters affect the charging process, eachAuto mode preset
includes a Fuel Table unique to a specific battery chemistry. When you select a User Preset for
the REVO Red brand, for example, you are also selecting a Fuel Table tailored for that brand. The
charger uses the Fuel Table to adjust current to maintain the specified C charge rate. Given a
brand-specific Fuel Table, the Fuel Level display and Auto charge modes are highly accurate.
When preparing to charge a pack, the first step is to find the appropriate User Preset. If one
doesn’t exist, you might be able to create a User Preset from the closest Library Preset. Or you
might select a User Preset from the library available in the Charge Control Software (which enables
you to load, select, backup and share presets). You can even create a new Fuel Table for any Li
chemistry by starting and recording a 1C charge (temporarily using a manually set current), and ap-
plying the table to an existing User Preset.
FMA technicians will continually update the presets library, which is included each time you up-
date the Charge Control Software. This library will be supported far into the future as new battery
brands and chemistries are introduced.