Booma-RC BLACKMAX User manual

BALANCE CHARGER/DISCHARGER
FOR LiFe/LiPo/LiIon/NiCd/NiMH/PB BATTERIES
Users Guide
BLACKMAX is a rapid charger/discharger with built-in balancer, computerised with
microprocessor and specialised operating software.
Please read this operating manual before attempting to use your new
Booma-RC BLACKMAX charger
Booma-RC
MAXPACK
Dual Charge
Charge 2 Booma MAXPACK Batteries Simultaneously
READY
BLACKMAX
BLACKMAX

Features
Optimized operating software
BLACKMAX is a new generation in Battery Charge/Discharging management systems
offering intelligent microprocessor control of all functions.
Current fed into and drawn out of your battery system is optimised for each battery
chemistry. This intelligent technology can prevent over-charging which (in some battery
chemistries) has led to battery destruction and in some cases battery explosion.
The sophisticated circuity inside BLACKMAX is monitored at every stage of the Charge/
Discharge process to afford maximum safety. BLACKMAX offers many user functions
so your battery charge/discharge requirements can be tailored to your specic needs.
BLACKMAX also comes to you with a multitude of connector options and offers intel-
ligent balancing Charge/Discharge algorithms for 2 to 6 lithium cells.
When used with Booma-RC optional MAXPACK batteries, BLACKMAX can charge two
packs simultaneously.
High-power and high-performance circuit
BLACKMAX offers high powered circuitry with a maximum output power of 50W. This
gives you the ability to charge up to 15 cells of NiCd/NiMH and 6 Cells (in series) of
Lithium batteries with a charge current of between 0.1 and 5.0A. The BLACKMAX
internal cooling system ensures that the high power generated during the Charge/
Discharge process can be easily maintained.
Individual voltage balancer for Lithium batteries
BLACKMAX also offers an individual-Lithium cell-voltage balancer. The accuracy of this
balancer is achieved by high tolerance balancing resistors. BLACKMAX does not require
an external balancer when balance charging Lithium batteries (Lilo/LiPO/LiFe). Nice :)
Discharge balance of individual cells
BLACKMAX also offers individual cell balanced discharge for Lithium battery chemistry.
Intelligent circuitry and software will detect if the voltage of any one cell varies abnormally.
This will cause the Discharge process to stop.
Latest Lithium battery chemistry
BLACKMAX has been designed to work with the latest Lithium battery chemistry LiFe
(A123), Lilo and LiPo. Each of these battery chemistries has unique voltage and Charge/
Discharge characteristics requiring individual charge/Discharge software algorithms.
BLACKMAX closely monitors the Lithium Charge/Discharge process to ensure maximum
safety of charging. Booma-RC advises that you use BLACKMAX at your discretion and
that you accept full responsibility for Charging/Discharging Lithium chemistry batteries.
Lithium battery ‘Fast Charge’ and ‘Storage’ mode
BLACKMAX provides you with a special fast charge algorithm. The ‘Fast’ charge
algorithm reduces the charging time to maximise your enjoyment of RC ying/racing.
BLACKMAX also offers ‘Storage’ mode for maximizing the life of Lithium batteries.

Maximized Safety Features
Delta-peak sensitivity for NiMH and NiCd chemistry: The automatic charge
termination program works on the principle of the Delta-peak voltage detection.
When charging NiCd or NiMH using the ‘AUTO’ current algorithm, you can set the upper
limit of charge current to avoid overcharge of your battery pack. This algorithm is highly
desirable when charging low impedance small capacity NiMH battery packs.
Capacity limit: When charging all battery chemistries you have the option of setting
a maximum capacity. Once this capacity is reached BLACKMAX will automatically
terminate the charge process.
Temperature limit: BLACKMAX comes to you with a temperature sensor probe.
When using this probe in conjunction with the “temp sens” function the temperature of
the battery is monitored and Charging is terminated if the battery pack should reach the
user set temperature limit.
Processing time limit: BLACKMAX further ensures the safe charging process by
monitoring a user dened maximum charge time. Once the charge time is reached the
charge process is automatically terminated.
Input power monitor: BLACKMAX monitors the input voltage to it’s system. If
the input voltage drops to an unusable level (car battery going at) BLACKMAX will
automatically terminate the charging process.
Built in cooling fan: BLACKMAX comes with a built in cooling fan which runs
automatically when the internal temperature of the unit requires cooling.
5 User Programmable Settings
BLACKMAX offers storage for 5 user programs to store your favorite user settings.
Cyclic charging/discharging
BLACKMAX can breath new life into those battery packs that you thought were at end
of life. You can perform between 1 and 5 cycles of charge>discharge or discharge>charge
for NiCd and Nimh packs.
PC based analysis using USB communication
For the technical minded BLACKMAX offers PC based program analysis of the charge
discharge process via the USB port. Included software will allow you to graph voltage,
current, capacity and temperature curves. Individual voltage of each cell can also be
monitored when using balance charge functions.

Exterior of the unit
Lithium balance charge program connection
WARNING
Damage may result to your batteries or your BLACKMAX charger if batteries are
connected incorrectly. When charging using the balance program please connect the
balance connector of the battery pack to the 2,3,4,5 or 6 cell balance connector and then
connect the main power cables to the positive and negative connectors on the side of the
unit.
BALANCE CONNECTORS
POWER CONNECTORS

Warnings and safety notes
Never leave BLACKMAX unsupervised during the Charge/Discharge process. If any
abnormal charging characteristic is observed, immediately terminate the process and
refer to the operation manual.
To maximise the life of your BLACKMAX charger keep it away from dust, damp, rain,
heat direct sunshine and vibration. Be careful not to drop your BLACKMAX charger .
The BLACKMAX circuitry will operate when powered from a 10-18V DC only. AC power
is possible with the optional Booma-RC BLACKMAX AC power adaptor.
This unit and the battery to charge or discharge should be set up on a heat-resistant,
non-inammable and non-conductive surface. Never place them on a car seat, carpet or
similar. Keep all the inammable volatile materials well away from operating area.
It is your responsibility to understand the chemistry of the battery to be charged or
discharged. If incorrect battery chemistry is selected the battery can be damaged or
destroyed and re may result. Please read and thoroughly understand the following
battery information.
NiCd/NiMH Voltage level:1.2V/cell
Allowable fast charge current:1C-2C depends on the performance of cell
Discharge voltage cut off level 0.85V/cell(NiCd), 1.0V/cell(NiMH)
Lilo Voltage level:3.6V/cell.
Max.charge voltage:4.1V/cell.
Allowable fast charge current: 1C or less.
Min.discharge voltage cut off level:2.5V/cell or higher.
LiPo Voltage level:3.7V/cell.
Max.charge voltage:4.2V/cell.
Allowable fast charge current: 1C or less.
Discharge voltage cut off level:3.0V/cell or higher.
Life (A123) Voltage level:3.3V/cell
Max.charge voltage:3.6V/cell
Allowable fast charge current: 4C or less(e.g. A123M1)
Discharge voltage cut off level:2.0V/cell or higher
Pb Voltage level:2.0V/cell
(Lead-acid) max.charge voltage:2.46V/cell
Allowable fast charge current:0.4C or less
Discharge voltage cut off level:1.50V/cell or higher
To avoid short-circuits when connecting batteries to BLACKMAX , always connect the
charge cable to the unit rst and only then to the battery.

-Never attempt to disassemble a battery pack.
-It is imperative that you pay attention to the capacity and the voltage of the Lithium
battery pack. Lithium battery packs may be composed of parallel and series connection
cells. Cells in series multiply the voltage of each cell by the number of cells. Cells in
parallel multiply the capacity of the cell. Most Lithium packs will have information stamped
on the outside of the package. It is your responsibility to understand the conguration of
your battery packs.
Discharge
Discharging a battery pack is used to determine the residual capacity of the battery,
or to lower the voltage of battery to a dened long storage level. When you discharge
a battery pack you should pay close attention to the voltage levels to avoid the battery
becoming deep-discharged. Lithium batteries should never be deep-discharged to lower
than the minimum manufacturers recommended voltage. Generally, you do not need to
discharge Lithium battery packs.
-Some NiCd and NiMH batteries are said to have a memory effect. If they are partly used
and recharged before the whole charge is drawn out, they ‘remember’ this and next time
will only use that part of their capacity. BLACKMAX offers a Charge/Discharge cycling
algorithm to assist in maximizing the life of your NiCd and NiMH battery packs.
-A new NiCd battery pack requires several charge/discharge operations to reach it’s full
capacity. The cyclic process of charging and discharging will optimize the capacity of
battery pack.
- Lithium battery chemistry is better suited to partial rather than a full discharge. Frequent
full discharges should be avoided if possible. Instead, charge the battery more often or
use a larger battery.
Warnings and safety notes are important. To avoid
injury, loss of property or damage to the charger
please follow the instructions.

Program Flow Chart

Initial Parameter set up (Users set up)
BLACKMAX will start with basic user settings when it is connected to a 12V battery for
the rst time. The screen displays the BLACKMAX BRC6 welcome screen and then will
switch to the last used setting. You can freely change the parameter as required.
To select different battery programs repeatedly select the “Batt Type”. This will cycle
through the different battery basic chemistries.
To alter the parameter of any battery chemistry
press the “Enter/Start” key. This will cause the
selected parameter to start ashing. Pressing the
“Enter/Start” repeatedly will cycle through each
parameter in the selected chemistry type. When a
parameter is blinking the INC or DEC key is used to
change the value up or down. Pressing the enter key
will store the selected value.
Here is an example: Press the battery type button
until the screen shows USER SET PROGRAM. Press
the “Enter” key to display the chemistry type. Press
the “Enter” again key and the battery cell voltage
should blink. Press the “INC” or “DEC” keys to
change the Lithium battery voltage (and type).
There are three kinds of Lithium battery: LiFe(3.3V),
Lilo(3.6V) or LiPo(3.7V). Selecting the correct lithium
chemistry is very important when charging lithium
batteries. If the incorrect battery type is selected the
battery may be overcharged and can explode during
charge process.
BLACKMAX will perform voltage detection
to recognise the cell count of Lithium batteries
automatically at the beginning of charge or
discharge process. This algorithm cannot accurately
recognise cells count if the battery pack is deeply
discharged. BLACKMAX allows you to set the
time of intelligent detection up to 10 minutes. In
most cases (if a lithium battery pack is in usable
condition) 10 minutes is sufcient to recognise the
cell count correctly.
You can override the automatic cell count selection
by manually setting the cell count of your lithium
battery pack prior to commencing the charge
process.

For NIMH and NiCd battery chemistry you can set
the trigger voltage for automatic charge termination.
The effective value ranges from 5 to 20mV per cell.
If the trigger voltage is set higher, there is a danger
of overcharging the battery; if it is set lower, there
is a possibility of premature termination. Please
refer the technical specication of the battery.(NiCd
default:12mV, NiMH default:7mV).
BLACKMAX BRC6 comes to you with the ability
to monitor battery cell temperature or to connect
to a PC for more rened monitoring of the charge/
discharge cycle. For temperature monitoring please
connect the supplied temperature probe to the
3-pin port at left side of the unit. To monitor battery
charge/discharge via your PC please connect the
USB port to your PC via the supplied USB cable.
You can choose to monitor temperature or PC
functionally in the “USER PROGRAM” setting. To
run the PC software you will need to install the
software and USB driver prior to connecting the
BLACKMAX BRC6 to your PC.
Temperature monitoring, you can set the
maximum temperature at which the charger should
allow battery to reach during charge. Once a battery
reaches this temperature during charge, the process
will be automatically terminated to protect the
battery.
Cyclic Charge/Discharge, with cyclic battery
charge/discharge the battery can often become
warm. Within user settings you can adjust the time
delay to occur after each charge and discharge
process to allow the battery adequate time to cool
down before being subjected to the next process.
The value ranges from 1 to 60 minutes.
Automatic Charge Timer When you start
a charge process, the integral safety timer
automatically starts running at the same time. This
is programmed to prevent overcharging the battery.
The value for the safety timer should be set to allow
a full charge of the battery.

Maximum Charge Capacity, this setting sets
the maximum charge capacity that will be supplied
to the battery during charge. If the delta-peak
voltage is not detected nor the safety timer expired
for any reason, this feature will automatically stop
the process at the selected capacity value.
User feedback, BLACKMAX offers user
feedback in the form of a programmable beep at
every key press and/or to warn of the completion of
a charge cycle. These audible beep sounds can be
programmed to be ‘ON’ or ‘OFF’ in the user settings.
Input Voltage Level, monitors the voltage of
input battery. If the voltage drops below the value
you set the operation is terminated to protect the
input battery.
Lithium battery Lilo/LiPo/LiFe (A123) program
These programs are only suitable for charging and discharging Lithium batteries with a
nominal voltage of 3.3V, 3.6V and 3.7V per cell. These batteries have a different charge
technique termed constant voltage (CV) and constant current (CC) method. The charge
current varies according to the battery capacity and performance. The nal voltage of
charge process is precisely matched with the lithium battery chemistry being: 4.2V for
LiPo, 4.1V for Lilo, and 3.6 V for LiFe (A123). It is important that you choose the correct
lithium chemistry type (voltage) and battery capacity before you commence charging
your batteries.
Charging Lithium Batteries
The left side of the rst line shows the type of battery
you select at the users setting. The value on the left
side of second line sets a charge current and the
value on the right side of second line sets the voltage
of the battery pack.
After setting the current and voltage press Start/Enter
key for more than 3 seconds to start the process.
(Charge current:0.1~5.0A,Voltage:1~6 series)

Once the charge process starts you will be shown
the number of cells you set up and the processor
will auto detect the number of cells and ask you
to conrm it’s ndings. ‘R:’ shows the number of
cells found by the charger and ‘S:’is the number of
cells selected by you at the previous screen. If both
numbers are identical you can start charging by
pressing Start/Enter button. If not, press Batt Type/
Stop button to go back to previous screen. Then
carefully check the number of cells of the battery
pack before attempting to charge again.
To stop charging press Batt Type/Stop key once.
Charging Lithium batteries in balance mode
This mode is used for balancing the voltage of individual Lithium battery cells and
for charging Booma-RC MAXPACK batteries. If charging a single battery pack,
connect the balance charge jack to the appropriate balance port on the right side of the
BLACKMAX charger. You then connect the main power output lead to the output plug
to the output of charger. When you charge in this mode charger will monitor the voltage
of each cell of the battery pack and adjust charging current that is feeding to each cell.
This is balance charging and this mode will give you maximum life of your MAXPACK
battery. YOU CAN BALANCE CHARGE 2 x MAXPACK battery packs with the
Booma-RC 2 x MAXPACK adaptor. Please see instruction supplied with the
MAXPACK adaptor for details.
The value on the left side of second line sets the
charge current and the value on the right side of
second line sets the voltage of the battery pack.
After setting the current and voltage press the
Start/ Enter key for more than 3 seconds to
start the process. (Charge current:0.1~5.0A,
Voltage:1~6 series)
Once the charge process starts you will be shown
the number of cells you set up and the processor
will auto detect the number of cells and ask you
to conrm it’s ndings. ‘R:’ shows the number of
cells found by the charger and ‘S:’is the number of
cells selected by you at the previous screen. If both
numbers are identical you can start charging by
pressing Start/Enter button. If not, press the Batt
Type/Stop button to go back to previous screen.
Then carefully check the number of cells of the
battery pack to charge again.

After charging starts the screen shows details of the
charge process. To stop charging press Batt type/
Stop key once.
‘FAST’ charging Lithium batteries
Fast charging is designed so you can maximise your enjoyment of the battery usage in
a reduced time frame. The algorithm will reduce the time to charge your lithium battery
with a slightly reduced capacity. The charge process follows the standard CV/CC algorithm
but stops the charge process at 1/5 of the initial charge value instead of 1/10 of normal
charge current.
Just as with normal and balance charging you can
set the desired values prior to commencing the Fast
Charge process. Starting the charge process is the
same as balance and normal charging.
The screen shows the present situation during charge
process. To stop charging press Batt type/ Stop key
once.
‘STORAGE’ control of Lithium batteries
This is for charging or discharging Lithium battery for long term storage. The program
will automatically determine whether to charge or discharge the battery to the ‘storage’
voltage depending on the voltage of the battery. Each lithium battery chemistry has a
preferred storage voltage being: 3.75V for Lilo, 3.85V for LiPo and 3.3V for LiFe (A123)
per cell.
Prior to commencing the storage program please
set the voltage and capacity of the battery pack.
Depending on the charge level of the battery pack,
BLACKMAX will charge or discharge the battery to
reach the desired storage level.

After charge/discharge starts the screen shows
details of the charge process. To stop charging press
Batt type / Stop key once.
When discharging lithium batteries it is recommended
that the value of discharge current (Shown on the
left side of the LCD screen) not exceed 1C.
The nal voltage (Shown on the right side of the
LCD screen) should be selected for the appropriate
battery chemistry being discharged. Failure to select
the correct nal voltage may damage the battery.
To start the discharge process, press the Start/ Enter
key for more than 3 seconds. To stop discharging
press Batt type/Stop key once.
Discharging Lithium batteries
Voltage balancing and monitoring during the discharge process
During a balance charge/discharge the processor monitors the voltage of individual cells
for ‘storage-mode’ and ‘discharge’ of Lithium battery packs. If the cells are well matched
and in good condition BLACKMAX will balance the voltage of each cell. This process wil
micro charge/discharge a cell to achieve a balance condition.
Monitoring each cells voltage can be achieved by pressing the inc button during the
charge/discharge process.
If the voltage of any one (or more) cells varies abnormally during the procedure,
BLACKMAX will terminate the process and an error message will be displayed. If this
happens, the battery pack may contain a bad cell or a bad connection exists.
In the example to the left, BLACKMAX has
discovered the voltage of one of the cells in the
Lithium battery pack is too low.
In this case, the 4th cell is bad. Check cables and
if the cables are good then the cell of the battery is
bad.

NiMH/NiCd battery program
The NiMH/NiCD programs are for charging or discharging NiMH (Nickel-Metal- Hydride)
or NiCd (Nickel-Cadmium) batteries. To alter the value at the display, press Start/Enter
key to make it blink then change the value using INC or DEC key.The value will be stored
by pressing Start/Enter key once.
To start the process, press Start/ Enter button for more than 3 seconds.
Charging NiCd/NiMH batteries
BLACKMAX offers 2 Modes for charging NiMH/NiCD
batteries.
1) Auto program mode will charge the battery
pack using a smart algorithm that applies charge/
discharge techniques to arrive at the nal delta peak
voltage of the battery pack. Auto mode has a user set
current limit function to limit charge current fed into
low impedance packs during the early stages of the
charge process.
2) Manual program mode will charge the pack at the
user set current and sense the ‘Delta Peak’ value of
the battery pack to stop the charge process.
Each mode can be switched by pressing the INC and
DEC buttons simultaneously when the current value
is blinking.
Discharging NiCd/NiMH battery
When discharging NiMH/NiCD packs you set the
discharge current and nal voltage of the pack at
discharged state. Discharge current is seen on the
left and nal voltage on the right of the LCD screen.
The discharge current ranges from 0.1 to 1.0A and
the nal voltage ranges from 0.1 to 25.0V.
To start the process, press the Start /Enter key
for more than 3 seconds. The screen displays
the current state of discharge. You can alter the
discharge current by pressing StartEnter key during
the process. Once you change the current value,
store it by pressing Start /Enter button again. To stop
charge/discharging press Batt type/ Stop key.

Charge/Discharge & Discharge/Charge cycle NiMH/NiCd battery
The Charge/Discharge cycle algorithm will allow
you cycle packs up to 5 times to break-in a new
NiMH/NiCD pack or revitalise older packs.
Set the sequence (discharge/charge or charge/
discharge) on the left and the number of cycles on
the right. Set the number of cycles on the right.
A temperature cool down pause time can be set
in the user program section to pause between the
cycle process.
To stop the process, press Batt type/Stop key once.
At the end of the process, by pressing the INC or
DEC button, you can see charged or discharged
capacity of the battery for each cycle.
Pb( lead-sulphuric acid) battery program
The Pb (lead-sulphuric acid) program will allow you to charge lead acid batteries from
2 to 20V. The optimal charge current will be 1/10 of the capacity. Pb batteries must
not be charged rapidly.
Charging a Pb battery
Charge current is shown on the left and the
nominal voltage of the battery on the right of the
LCD screen.
Charge current ranges from 0.1 to 5.0A and the
voltage should be matched with the battery
being charged.
Start the charge process by pressing Start/Enter
key for more than 3 seconds.

During the charge process the LCD screen displays
the charge state of the battery. To stop the charging
process, press Batt type/Stop key.
Discharging Pb battery
Discharge current is set on the left and nal voltage
on the right of the LCD screen. The discharge current
ranges from 0.1 to 1.0A.
During the discharge process the screen displays
the state of the battery. You can alter the discharge
current by pressing Start/Enter key during the process.
Once you change the value, store it by pressing Start
Enter button again.
Save Data Program
BLACKMAX comes with 5 user programmable memories for you to store your battery
charge discharge setups. Saving a program to a memory position is a simple task of
selecting battery type and parameters as explained earlier in this user guide and then
using the ‘Batt Type’ button scroll to the ‘Save Data’ page. Press and hold the ‘Select’
button for more than 3 seconds to store the data in the selected memory.
The following example shows how to set up and save
a program for a NiMH battery pack of 12cells and
3000mAh of capacity.

Select the charge current for manual charge mode,
or the current limit for automatic charge mode.
Set up discharge current and nal voltage.
Set up the cycle type (charge/discharge or discharge/
charge) and number of cycles.
Press and hold the ‘Select’ button for more than 3
seconds to store the data in the selected memory.
Load Data Program
Your previously saved programs can be recalled from memory.
To load a previously saved program:
1) Press the ‘Batt Type’ button to scroll to the ‘Load
Data’ page.
2) Press the select button and the memory number
will ash. Use the ‘+’ and ‘-’ buttons to select the
desired program to load.
3) Press Start /Enter key for more than 3 seconds.
The selected program will load into memory.

Information screens
BLACKMAX gives you the opportunity to view information on the LCD screen during
charging or discharging process. Sequentially pressing the DEC ‘-’ button will show the
user settings. In balance charge mode you can monitor the voltage of individual cells by
pressing INC ‘+’ button.
End Voltage. The nal battery voltage when the
charge process terminates.
Capacity cut-off. When set on ‘ON’ the charge
process will terminate if the preset capacity is
reached irrespective of whether the battery is fully
charged.
Safety time function. When set to ‘ON’ the charge
process will terminate if the safety timer value is
reached irrespective of whether the battery is fully
charged.
USB/Temp. Assigns the data port as USB (connect to
a PC) or temperature measurement (requires the use
of the temperature probe).
If the temperature function is selected then
temperature will be displayed when using the
thermal probe.
The present voltage of input DC power. If the
voltage falls below the user preset input voltage
then a warning is shown and the charge process will
terminate.
When balance charging/discharging with Booma-RC
MAXPACKS pressing the ‘+’ button will show the
individual voltage of each cell in the battery pack.
When using the Booma ‘Dual Charge’ adaptor 2 x
Booma-RC MAXPACKS can be simultaneously
charged and the voltage of each individual cell of
both packs can be viewed. This type of balanced
charging ensures the best life and capacity for your
Booma-RC MAXPACKS .

Warning and error messages
BLACKMAX incorporates a microprocessor and intelligent algorithms to give you the
maximum possible safety and protection for your batteries. When an error occurs you
will be shown one of the following errors.
BLACKMAX output is connected to a battery with
incorrect polarity.
A connection between the battery and
BLACKMAX has become open circuit.
A short circuit has happened on the output of
BLACKMAX .
BLACKMAX input voltage has droped below the
required input level.
The voltage of the battery pack was selected
incorrectly. Please check the cell count of the
battery pack.
An internal software/hardware malfunction has
occurred. Please contact Booma-RC for assistance.
Lithium pack voltage is set lower than the pack
voltage indicates. Please check the cell count of
the battery pack.
Lithium pack voltage is set higher than the pack
voltage indicates. Please check the cell count of
the battery pack.
The voltage of one of the cells in a Lithium battery
pack is too low. This may indicate a faulty cell.
The voltage of one of the cells in a Lithium battery
pack is too high. Please check the voltage of the
cell one by one.

BLACKMAX has found a bad connection in the
balance connector. Please check the connector and
cables carefully.
BLACKMAX internal temperature is too high.
Please disconnect all batteries and power and allow
BLACKMAX to cool down.
BLACKMAX cannot control the level of output
current. Please contact Booma-RC for assistance.
Specications
Operating voltage range: 10.0~18.0Volt
Circuit power: Max.50W for charging. 5W for discharging.
Charge current range: 0.1~5.0A
Discharge current range: 0.1~1.0A
Lipo balancing current: 300mAh/cell
NiCd/ NiMH battery cell count: 1~15cells
Lithium battery cell count: 1~6Series
Pb battery voltage: 2 to 20V
Weight: 400g
Dimension: 135×100×40mm
Warranty and service
Booma-RC warrants BLACKMAX for a period of one year (12 months) against
manufacturer defect from the date of purchase.
The guarantee applies only to such material or operational defects, which are present at
the time of purchasing the product. During that period, we will replace without service
charge any product deemed defective due to those causes.
You will be required to present proof of purchase (invoice or receipt).
This warranty does not cover the damage due to wear, overloading, incompetent
handling or using of incorrect accessories.
Booma-RC
85 Wattle Road, Flinders NSW 2529
www.boomarc.com