Bantam e-STATION 902 User manual

Operating Manual
e-STATION
902
* We reserve the right to commit modifications.
* Copyright reserved
Microprocessor controlled high-performance and rapid charger/discharger
for NiCd/NiMH, LiIo/LiPo/LiFe, and Pb batteries
External discharge module link, USB communication port, temperature
sensor, PWM motor driver
Charge current up to 9.9A, Discharge current up to 9.9A, 10
data memories, 1~12 series LiIo/LiPo/LiFe, 1~32 cells
NiCd/NiMH, 2 to 40V Pb batteries

Special features
Thank you for purchasing the e-STATION 902. You get a rapid charger/discharger that is
computerised with a high performance microprocessor and specialised operating software. It can
maintain your battery at its best condition and also control them safely.
Please read this entire operating manual completely and attentively as it contains a wide variety of
specific programming and safety information.
You need to keep this manual in a safe place, and be sure to pass it on to the new owner if you
ever dispose of 902.
- High-power and high-performance circuit
902 employs the circuit that has maximum output power of 200W. As a result it can charge or
discharge up to 32 cells of NiCd/NiMH and 12 series of Lithium batteries with maximum current of
9.9A. Furthermore, the cooling system is so efficient that can hold such a power without any
trouble of the circuit or the operating programs. If you need more power to discharge the battery of
high voltage with high current you can link an external discharge module(*) that is sold separately
to the unit.
- Optimised operating software
When charging or discharging, 902 has an 'AUTO' function that set the feeding current or the cell
count of Lithium battery automatically. Especially for Lithium batteries, it can prevent the
over-charging can lead to an explosion by users fault. Every program in the unit is controlled with
mutual links and communicates for every possible error. So it introduces a maximum safety. These
can be set at users option.
- 'OUTPUT-2'
The 'OUTPUT-2' can charge NiCd or NiMH battery up to 6 cells with 'OUTPUT-1' simultaneously.
It employs the delta-peak voltage detection method not the trickle charge, and is independently
operated from 'OUTPUT-1'. Do not try to charge Lithium battery at OUTPUT-2.
- Accept various type of Lithium batteries
902 can accept three types of Lithium batteries - LiIo, LiPo and LiFe. They have different
characteristics by their chemistry. You can select any one of them that you are going to process
before the job. For their specifications, refer 'Warnings and safety notes' section.
- PWM Motor driver
You can easily break-in or test the motor at 'OUTPUT-1' with a variable feeding voltage, and
running time. And also you can check the output power and the consumption of electric current of
the motor at real time.
- Lithium 'Fast'/'Storage' mode charge
You can charge Lithium batteries for special purposes. 'Fast' charge reduces the charging time of
Lithium battery and 'Storage mode controls the final voltage of battery to be suit for long time
storage.
- Maximum safety
Delta-peak sensitivity : The automatic charge termination program works on the principle of the
Delta-peak voltage detection. The charge monitors the charging curve and assessment of the peak
with the charging time increment. This indicates the terminal point of charging accurately. The
value of trigger voltage can be set separately for NiCd and NiMH batteries in mV at users setting.
Capacity limit : The charging capacity always calculated by multiple of the charging current and
time. If the charging capacity exceeds the limit the process will be terminated automatically when
you set the maximum value.
- 2 -

Temperature limit(**) : The temperature of the battery on charging will rise by its internal chemical
reaction. If the temperature increases too much the charging process cannot be accomplished
properly and also the battery can be damaged. If you set the limit of temperature the process will
be expired forcibly.
Processing time limit : You can also restrain the maximum process time to prevent any possible
defect.
Input power monitor : To protect the car battery using as input power from being damaged, the
voltage of it is always monitored. If it drops below the lower limit the process will be ended
automatically.
Automatic cooling fan : The electric cooling fan comes into action automatically only when the
internal temperature of the unit is raised.
- Monitoring the voltage of individual cell(***)
Unbalance of the voltage of each cell can occur in the Lithium battery pack because of
consecutive charge and discharge. Using 'Lithium balancer(PB5 or PB6)', the charger monitors the
voltage of each cell and controls the charge and discharge current to equalise the voltage. For this
process the charger communicates with the external balancer through the temperature sensor port.
- Battery data store/load
For users convenience it can store maximum 10 data of batteries. You can establish the data
contains program setting of the battery to be charged or discharged continually. These data can be
called out at any time you need and executed without program setting.
- Cyclic charging/discharging
Perform 1 to 5 cycles of charge>discharge or discharge>charge continually for battery refreshing
and balancing.
- PC based analysis using USB communication(****)
For technical expert, 902 offers PC based software can analysis the characteristic of the battery
using USB port. It shows a graph of voltage, current, capacity and temperature curves.
* Optional external discharge module (product no.: ELD150)
** When using the thermal probe (product no.: EAC110)
*** Separately purchased 'Lithium Battery Balancer' PB5 or PB6
**** A software CD and an USB cable comes with the unit.(product no.: EAC100)
Exterior of the unit
operating buttons
cooling fins
LCD
screen
'OUTPUT1'
cooling fan
input power
cable
temperature
sensor port
USB
'OUTPUT2'
external discharge
link port
- 3 -

Warnings and safety notes
Never leave the charge unsupervised when it is connected to its power supply. If any
malfunction is observed immediately terminate the process and refer to the operation manual.
Keep away the unit from dust, damp, rain, heat direct sunshine and vibration. Do not drop it.
The circuit of the unit is designed to be powered by a 12V DC only.
This unit and the battery to charge or discharge should be set up on a head-resistant,
non-inflammable and non-conductive surface. Never place them on a car seat, carpet or similar.
Keep all the inflammable volatile materials well away from operating area.
Be sure to understand the information of the battery to be charged or discharged accurately. If
the program is set up incorrectly the battery can severely be damaged. Especially Lithium
battery can cause a fire or an explosion by over-charging.
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)
LiIo 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 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: 1.75V/cell or higher
To avoid short-circuits between the charge lead, always connect the charge cable to the unit first
and only then to the battery to be charged or discharged. Reverse the sequence when
disconnecting.
Do not connect more than one battery pack to the charge lead at any one time.
Do not attempt to charge or discharge the following types of battery.
- Battery pack, which consists of different types of cell (including different manufacturers).
- Battery, which is already fully charged or just slightly discharged.
- Non-rechargeable batteries (Explosion hazard).
- Batteries that require a different charge technique from NiCd, NiMH, LiIo, LiPo, LiFe or Pb.
- Faulty or damaged battery.
- Battery fitted with an integral charge circuit or a protection circuit.
- Batteries installed in a device, or which are electrically linked to other components.
- Batteries that are not expressly stated by the manufacturer to be suitable for the currents the
charger delivers during the charge process.
Please bear in mind of checking the following point before charge operation.
- Did you select the appropriate program, which are suitable for the type of battery?
- Did you set up adequate current for charging or discharging?
- Lithium battery pack can be composed with parallel and series circuits mixed. You have to
check the composition of the battery pack carefully before charging.
- Are all connections firm and safe, or is there an intermittent contact at any point in the
circuit?
Those warnings and safety notes are particularly important. Please follow the
instructions for a maximum safety; otherwise the charger and the battery can be
damaged violently. And also it can cause a fire to injure a human body or to lose the
- 4 -

Program flow
PROGRAM SELECT
Lithium battery
Batt type
Stop
Batt type
Stop
Start
Enter
DECDEC
◀◀
INCINC
▶▶
DECDEC
◀◀
INCINC
▶▶
LiXX
FAST CHG
INCINC
▶▶
DECDEC
◀◀
LiXX
STORAGE
DECDEC
◀◀
INCINC
▶▶
LiXX
DISCHARGE
PROGRAM SELECT
NiMH battery NiMH CHARGE
'Aut'/'Man'
Start
Enter
DECDEC
◀◀
INCINC
▶▶
NiMH
DISCHARGE DECDEC
◀◀
INCINC
▶▶
NiMH
CYCLE
PROGRAM SELECT
NiCd battery NiCd CHARGE
'Aut'/'Man'
Start
Enter
DECDEC
◀◀
INCINC
▶▶
NiCd
DISCHARGE DECDEC
◀◀
INCINC
▶▶
NiCd
CYCLE
PROGRAM SELECT
Pb battery Pb CHARGE
Start
Enter
USER SET
PROGRAM LiXX V. Type
Start
Enter LiPo/LiIo/LiFe
CHK Time
DECDEC
◀◀
INCINC
▶▶
NiMH D. Peak
sensitivity
DECDEC
◀◀
INCINC
▶▶
NiCd D. Peak
sensitivity
INCINC
▶▶
DECDEC
◀◀
Temp Cut-off DECDEC
◀◀
INCINC
▶▶
CHG>DCHG
Waste Time
DECDEC
◀◀
INCINC
▶▶
INCINC
▶▶
DECDEC
◀◀
Batt type
Stop
Batt type
Stop Safety Timer
DECDEC
◀◀
INCINC
▶▶
Batt type
Stop
Batt type
Stop
Capacity
Cut-off
DECDEC
◀◀
INCINC
▶▶
INCINC
▶▶
DECDEC
◀◀
DECDEC
◀◀
INCINC
▶▶
NiMH/NiCd/Pb
Trickle charge
Key Beep
Buzzer
Input Power Low
Cut-off
Back-light
brightness DECDEC
◀◀
INCINC
▶▶
OUTPUT2
charge current
set up
Motor drive Save data Load data
voltage/time
set up data
set up calling number
set up
DEC
◀DEC ◀
INC▶ INC▶
DEC
◀DEC ◀
INC▶ INC▶
Start/
Enter
Start/
Enter Start/
Enter
Start/
Enter Start/
Enter
Start/
Enter Start/
Enter
Start/
Enter
Batt type
Stop
Batt type
Stop
LiXX
CYCLE
LiXX
CHARGE
Batt type
Stop
Batt type
Stop
- 5 -

- 6 -
Initial parameter set up (Users set up)
902 will be operated with the default value of the essential user settings when it is connected to a
12V DC power for the first time. The screen displays the following information in sequence and the
user can change the value of parameter on each screen.
When you are willing to alter the parameter value in the program, press key to make it blink then
change the value with or key. The value will be stored by pressing key once.
This informs you of its designation
The screen displays the nominal voltage of Lithium battery.
There are three kinds of Lithium battery; LiFe(3.3V),
LiIo(3.6V) or LiPo(3.7V). This is very important so you have
to check the battery carefully and set it up correctly. If it is
different from correct value the battery can explode during
charge process.
902 recognise the cell count of Lithium battery automatically
at the beginning of charge or discharge process to avoid
from erroneous setting by user. But deeply discharged
battery can be perceived incorrectly. To prevent the error,
you can set the time term to verify the cell count by the
processor. Normally, 10 minutes are enough to perceive the
cell count correctly. For the battery of larger capacity, you
may extend the time term. But if you set the time term too
long for the battery of smaller capacity, the charge or
discharge process can be finished within the time term with
the erroneous cell count. This may cause the fatal result. If
the processor recognises the cell count incorrectly at the
beginning of charge or discharge process, you may extend
the time. Otherwise, you had better use with the default
value.
Start
Enter
Display
Program Select
User Set
-
Display
LiFe
V. Type 3.3V
INC▶
Display
LiPo/LiIo/LiFe
CHK Time 10min
Display
NiMH Sensitivity
D.Peak Default
INC▶
DEC
◀
This shows the trigger voltage for automatic charge
termination of NiMH and NiCd battery. 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 specification of the battery.
(NiCd default: 12mV, NiMH default: 7mV)
+
DEC
◀INC▶
-
+
DEC
◀INC▶
INC▶
DEC
◀
-
+
DEC
◀INC▶
Display
NiCd Sensitivity
D.Peak Default
-
+
DEC
◀INC▶
INC▶
DEC
◀
An optional feature using temperature probe contacting the
surface of battery, the temperature cut-off can be on or off. If
it is on, 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
terminated to protect the battery.
Display
Temp. Cut-Off
ON 80C
-
+
DEC
◀INC▶
-
+
DEC
◀INC▶
INC▶
DEC
◀
DEC
◀
INC
▶
Start
Enter

When you start a charge process, the integral safety timer
automatically starts running at the same time. This is
programmed to prevent overcharge the battery if it proves
to be faulty, or if the termination circuit cannot detect the
battery full. The value for the safety timer should be
generous enough to allow a full charge of the battery.
This program 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 by any
reason, this feature will automatically stop the process at
the selected capacity value.
The beep sounds at every time pressing the buttons to
confirm your action. The beep or melody sounded at
various times during operation to alert different mode
changes. These audible sounds can be on or off.
This program monitors the voltage of input battery. If the
voltage drops below the value you set the operation
forcibly terminated to protect the input battery.
You can adjust the brightness of LCD screen at the
charger.
Display
Waste time
CHG/DCHG 5min
-
+
DEC
◀INC▶
-
+
DEC
◀INC▶
The battery is on the cyclic process of charge and
discharge can often become warm after charge or
discharge period. The program can insert a 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.
Display
NiMH/NiCd/Pb
Trickle 100mA
INC▶
DEC
◀
-
+
DEC
◀INC▶
You can set the trickle charge mode on or off. If it is on,
the charger will automatically supply the trickle charge
current to achieve the full charge without overheating the
battery after fast charge has been terminated.
Display
Safety timer
ON 120min
-
+
DEC
◀INC▶
-
+
DEC
◀INC▶
Display
Capacity Cut-Off
ON 5000mAh
-
+
DEC
◀INC▶
-
+
DEC
◀INC▶
Display
Key Beep ON
Buzzer ON
INC▶
DEC
◀
-
+
DEC
◀INC▶
Display
Input power low
Cut-Off 10.0V
INC▶
DEC
◀
-
+
DEC
◀INC▶
Display
Back-light
100%
-
+
DEC
◀INC▶
INC▶
DEC
◀
INC▶
DEC
◀
INC▶
DEC
◀
INC▶
DEC
◀
- 7 -

battery
voltage charge
current charged
capacity charging
time
number
of
cells
Lithium battery (LiIo/LiPo/LiFe) 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 need to adopt different charge technique is
termed a constant voltage(CV) and constant current(CC) method. The charge current varies
according to the battery capacity and performance. The final voltage of charge process is also very
important; it should be precisely matched with the charade voltage of the battery. They are 4.2V for
LiPo, 4.1V for LiIo, and 3.6V for LiFe. The charge current and nominal voltage as for cell count set
on the charge program must always be correct for the battery to be charged.
When you are willing to alter the parameter value in the program, press key to make it blink
then change the value with or key. The value will be stored by pressing key once.
The left side of the first 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 key for
more than 3 seconds to start the process.
This shows the number of cells you set up and the
processor detects. '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 press button. If
not, press button to go back to previous screen.
Then carefully check the number of cells of the battery
pack to charge again.
The screen shows the present situation during charge
process. To stop charging press key once.
Display
LiPo CHARGE
2.0A 11.1V(3S)
+-+-
'> 3 seconds'
Display
R: 3Ser S: 3Ser
CONFIRM(ENTER)
Display
Li3S CHG 0390mAh
11.75V 2.0A 12m
Start
Enter
Batt type
Stop
Batt type
Stop
Start
Enter
Start
Enter
Start
Enter
DEC
◀INC▶
DEC
◀INC▶
Charging Lithium battery
Start
Enter
Start
Enter
Batt type
Stop
DEC
◀
INC
▶
To balance the voltages of Lithium battery being charged, the balancer (PB5 or PB6) should be
linked to 902 and the battery pack being charged should have the individual cell connector. And
connect it to the individual port of the balancer with a suitable connection cable that fits with your
battery pack. And also, you need to connect the battery output plug to the output of charger.
(Please refer the users manual of the balancer)
In this mode, the charging process will be different from ordinary charging mode. The internal
processor of the charger will monitor the voltages of each cell of the battery pack and controls the
charging current that is feeding to each cell to normalise the voltage.
- 8 -

Display
LiPo Fast Chg
2.0A 11.1V(3S)
+-+-
Display
Li3S FAS 0010mAh
10.25V 2.0A 12m
'FAST' charging the Lithium battery
'>3 seconds'
Current
voltage of
battery
charge
current supplied
capacity elapsed
time
Batt type
Stop
DEC
◀
INC
▶
Start/
Enter
DEC
◀
INC
▶
The charging current is getting smaller as the process goes to the near end term of Lithium
battery charging. To finish charging process earlier, this program eliminate certain term of CV
process. Actually, the charging current will goes to 1/5 from the initial value to end the process
while the normal charging goes to 1/10 during CV term. The charging capacity may be a bit
smaller than normal charging but the process time will be reduced.
'Storage-mode' control Lithium battery
Display
LiPo Storage
2.0A 11.1V(3S)
+-+-
Display
Li3S STO 0010mAh
10.25V 2.0A 12m
'>3 seconds'
Current
voltage of
battery
charge
or
discharge
current
supplied
capacity elapsed
time
Batt type
Stop
DEC
◀
INC
▶
Start/
Enter
DEC
◀
INC
▶
You can set up the charging current and the voltage
of the battery pack being charged. As you press
button the voltage confirmation will be displayed. And
then, if you confirm the voltage and current, press
button again to start charging.
This shows the present state of 'FAST' charging. To
stop charging arbitrary, press key once.
Start
Enter
Batt type
Stop
Start
Enter
This is for charging or discharging Lithium battery that is not to use for the time being. The program
will determine to charge or discharge the battery to the certain voltage depending on the voltage of
the battery at its initial stage. They are different from the type of the battery, 3.75V for LiIo, 3.85V
for LiPo and 3.3V for LiFe per cell. If the voltage of battery at its initial stage is over the voltage
level to storage, the program will start to discharge.
You can set up the current and the voltage of the
battery pack to be charged. The current will be used for
charge or discharge the battery to reach the 'storage'
level of voltage.
The screen shows the present situation during charge
process. To stop charging press key once.
Batt type
Stop
- 9 -

Display
LiPo Dischg
2.0A 11.1V(3S)
+-+-
Display
Li3S DSC 0010mAh
8.21V 0.5A 12m
Discharging the Lithium battery
'>3 seconds'
current
voltage of
the battery
discharge
current discharged
capacity calculated
time
Display
LiPo Cycle
CHG>DSCH 3
◀
+-
Display
C>D 1 0200mAh
16.23V 3.0A 12m
Charge-to-discharge & discharge-to-charge cycle Lithium battery
present
battery
voltage
charge or
discharge
current
charged or
discharged
capacity
elapsed
time
+-
Set the sequence on the left and the number of cycling
on the right. You can use this function for balancing,
refreshing and breaking-in the battery. To avoid rising
temperature of the battery, there will a brief cool-off
period that already fixed at 'user setting' after each
charge and discharge process. The cycling number
ranges from 1 to 5.
To stop the process, press key once. You can
change the discharge current by pressing key
once during the process. The audible sound indicates
you the end of process.
Display
DSCH 1 1314mAh
CHG 1 1430mAh
At the end of the process, you can see charged or
discharged electric capacities of the battery at each
cyclic process.
By pressing or button the screen shows
the result of each cycle in order.
Batt type
Stop
DEC
◀
INC
▶
Start/
Enter
DEC
◀
INC
▶
Batt type
Stop
DEC
◀
INC
▶
Start/
Enter
◀
DEC
◀
INC
▶
The value of discharge current on the left side of screen
may not exceed 1C for a maximum safety and the final
voltage on the right should not be under the voltage
level that is recommended by the battery manufacturer
to avoid deep discharging.
To start to discharge press key for more than 3
seconds.
This shows the present state of discharge. To stop
discharging press key once.
Start
Enter
Batt type
Stop
Batt type
Stop Start
Enter
DEC
◀
INC
▶
- 10 -
'>3 seconds'

Display
NiMH Charge Man
Current 1.0A
Display
+-
Display
NiMH CHG 0010mAh
16.23V 1.0A 12m
NiMH/NiCd battery program
Display
NiMH Discharge
1.9A 11.5V
Charging NiMH/NiCd battery
'>3 seconds'
Current
voltage of
battery
Charge
current Charged
capacity Charging
time
Display
NiMH Cycle
CHG>DSCH 3
These programs are for charge and discharge of NiMH (Nickel-Metal-Hydride) or NiCd
(Nickel-Cadmium) battery commonly used for R/C model applications. Please check the trigger
voltages of each type of batteries for automatic charge termination at 'NiMH sensitivity' and 'NiCd
sensitivity' on user setting program.
To change the parameter value in the program, press key to make it blink then change the
value with or key. The value will be stored by pressing key once.
The screen displays the current state of charge. To stop
the process, press key once. The audible sound
indicates you the end of process. During the process, you
can alter the charging current by pressing once and
change the value using or button. Then you
can resume the process by pressing button once
again. But this job is only available within 5 minutes from
starting charge process.
DEC
◀
Display
Program Select
NiMH Batt
Batt type
Stop Start/
Enter
DEC
◀
INC
▶
Start
Enter
DEC
◀
INC
▶
Start
Enter
NiMH CHARGE Aut
CUR LIMIT 5.0A
This program simply charges the battery using the current
you set. In 'Aut' mode, you need to set the upper limit of
charge current to avoid from higher feeding current that
may damage the battery. Because some batteries of low
impedance and small capacity can lead to the higher
charge current by the processor at automatic charge
mode. But in 'Man' mode, it will charge the battery with the
charge current you set at the display. Each mode can be
switched by pressing and button simultaneously
when the current field is blinking.
DEC
◀
INC
▶
INC
▶
DEC
◀
Start
Enter
Start
Enter
Batt type
Stop
- 11 -

- 12 -
Display
NiMH Discharge
3.0A 11.5V
+-
Display
NiMH DSC 0010mAh
16.23V 3.0A 12m
Discharging NiMH/NiCd battery
'>3 seconds'
battery
voltage discharge
current discharged
current operated
time
+-
Display
NiMH Cycle
CHG>DSCH 3
◀
+-
Display
C>D 1 0200mAh
16.23V 3.0A 12m
Charge-to-discharge & discharge-to-charge cycling NiMH/NiCd battery
present
battery
voltage
charge or
discharge
current
charged or
discharged
capacity
operated
time
+-
Set discharge current on the left and final voltage on
the right. The discharge current ranges from 0.1 to
9.9A and the final voltage ranges from 0.1 to 48.0V).
To start the process, press key for more than 3
seconds.
(You can use the optional external-discharge-module,
ELD150 for lager discharge current.)
The screen displays the current state of discharge. You
can alter the discharge current by pressing key
during the process.
To stop discharging press key once. The audible
sound indicates you the end of process.
Set the sequence on the left and the number of cycling
on the right. You can use this function for balancing,
refreshing and breaking-in the battery. To avoid rising
temperature of the battery, there will a brief cool-off
period that already fixed at 'user setting' after each
charge and discharge process. The cycling number
ranges from 1 to 5.
To stop the process, press key once. You can
change the discharge current by pressing key
once during the process. The audible sound indicates
you the end of process.
Display
DSCH 1 1314mAh
CHG 1 1430mAh
At the end of the process, you can see charged or
discharged electric capacities of the battery at each
cyclic process.
By pressing or button the screen shows
the result of each cycle in order.
Batt type
Stop
DEC
◀
INC
▶
Start/
Enter
DEC
◀
INC
▶
Batt type
Stop
DEC
◀
INC
▶
Start/
Enter
DEC
◀
INC
▶
DEC
◀
INC
▶
Start
Enter
Batt type
Stop
Start
Enter
Batt type
Stop Start
Enter
'>3 seconds'

Display
Pb Charge
2.0A 12.0V
Display
Pb Charge
2.0A 12.0V
+-+-
Display
Pb CHG 0090mAh
10.12V 2.0A 12m
Pb (lead-acid) battery program
Charging Pb battery
'>3 seconds'
present
voltage of
the battery
charge
current charged
capacity operated
time
This is programmed for charging Pb (lead-acid) battery with nominal voltage from 2 to 40V. Pb
batteries are totally different from NiCd or NiMH batteries. They can only deliver relatively lower
current compare to their capacity, and similar restrictions definitely apply to charge. So the optimal
charge current will be 1/10 of the capacity. Pb batteries must not be charged rapidly. Always follow
the instruction is supplied by the manufacturer of battery.
When you are willing to alter the parameter value in the program, press key to make it blink
then change the value with or key. The value will be stored by pressing key once
again.
Display
Program Select
Pb Batt
Set up the charge current on the left and the nominal
voltage of the battery on the right. The charge current
ranges from 0.1 to 9.9A and the voltage should be one
of 6, 12 and 40V.
Start the charge process by pressing key for more
than 3 seconds.
The screen displays the state of charging process. To
stop charging forcibly, press key once.
The audible sound indicates you the end of process.
◀
Batt type
Stop
DEC
◀
INC
▶
Start/
Enter
DEC
◀
INC
▶
DEC
◀
INC
▶
Start
Enter Start
Enter
Batt type
Stop
Start
Enter
- 13 -

Display
OUTPUT-2 Charge
current 2.0A
Display
OUT-2 CHG 0090mAh
5.70V 2.0A 12m
Charging at 'OUTPUT-2' / Electric motor drive
battery
voltage charging
current charged
capacity collapsed
time
This program can charge the battery at 'OUTPUT-2' regardless of operating 'OUTPUT-1'. At
'OUTPUT-2', you can charge NiCd or NiMH battery up to 8 cells with the maximum charge current
of 2.0A. This program also employs the delta-peak voltage detection method to terminate charging
process. (Do not attempt to charge Lithium battery at 'OUTPUT-2')
You also can selected program to run your new electric motor for break-in procedure at
'OUTPUT-1'. Or you can test your electric power plant to set up an optimum condition. The break-in
procedure is essential for upgrading the power of a new motor.
To set up the parameter value in the program, press key to make it blink then change the
value with or key. The value will be stored by pressing key once.
Display
Program Select
OUT-2/Motor
Set up the charge current of 'OUTPUT-2'.
The charge current ranges from 0.1 to 2.0A.
The screen shows the present state of 'OUTPUT-2'.
The charge process starts on connecting the battery
to the 'OUTPUT-2' charge lead automatically,
regardless of operating 'OUTPUT-1'. And the screen
will be returned to the 'OUTPUT-1' mode after 10
seconds automatically.
+
-
* Even though the charge current of 'OUTPUT-2' was fixed previously, you can change it during the
process. To do this press button more than 3 seconds to display 'OUTPUT-2' screen again.
Then press button once to blink the charge current field to alter the value using or
buttons. Press button once again to continue the process with the charge current that has
been caged.
Display
Motor break-in
2.0V 30min
Display
Drive 0089mAh
2.07V 1.8A 2.9W
Connect the motor to the output lead from 'OUTPUT-1'
output. Set up the drive voltage and time. To start the
motor run, press button for more than 3 seconds.
(voltage: 1.0 ~ 15V, run time: 1 ~ 60min)
The screen shows the present state of motor running.
To stop the procedure, press button once.
+-
+-
driving
voltage current consumption output power
'> 3 seconds'
DEC
◀
INC
▶
Start/
Enter
Start/
Enter
DEC
◀
INC
▶
DEC
◀
INC
▶
Start/
Enter
Start
Enter
DEC
◀
INC
▶
Start
Enter
Start
Enter
Start
Enter
Start
Enter
DEC
◀
INC
▶
Start
Enter
Batt type
Stop
- 14 -

Display
Save [00] NiMH
14.4V 3000mAh
Display
NiMH Charge Mn*
Current 3.0A
Setting up charge current.
Save Data program
'> 3 seconds'
voltage data
number capacity
Display
+-
Display
NiMH Discharge *
4.0A 11.0V
Setting up discharge current and final voltage.
+-+-
Display
NiMH Cycle *
CHG>DSCH 3
+- +-
902 has a data storage and load program for your convenience. This feature can store up to 10
battery data by number that represent the individual specification of batteries you are using. They
can be called back for the process of charging or discharging without setting up the program again.
To set up the parameter value in the program, press key to make it blink then change the
value with or key. The value will be stored by pressing key once.
The parameter value setting up in this screen does not
affect charge or discharge process. They only represent
the specification of the battery. The following screens
will automatically be displayed exactly matched with the
battery type you set up. The example shows the battery
pack of NiMH, 12 cells and 3000mAh of capacity.
The voltage ranges from 0.1 to 33.6V and the capacity
ranges from 10 to 9990mAh.
Display
Save . . .
Saving the data.
Setting up the sequence of charge and discharge, and
the cycling number.
'> 3 seconds'
DEC
◀
INC
▶
DEC
◀
INC
▶
DEC
◀
INC
▶
DEC
◀
INC
▶
DEC
◀
INC
▶
Start/
Enter
Start/
Enter
Batt type
Stop
Program Select
Save/Load
DEC
◀
INC
▶
DEC
◀
INC
▶
type of battery
Start
Enter
DEC
◀
INC
▶
Start
Enter
- 15 -

Display
LOAD [00] NiMH
14.4V 3000mAh
Load Data program
voltage data
number capacity battery
type
Display
Display
Load . . .
Loading the data.
'> 3 seconds'
This program calls back the data that was stored at 'Save Data' program.
To load the data, press key once to blink the data number field and select the number using
or key then press key for more than 3 seconds.
Select the data number to be called back.
The data matched with the number will be displayed at
this time.
Program Select
Save/Load
Start/
Enter
Start/
Enter
Start
Enter
DEC
◀
INC
▶
Start
Enter
- 16 -

Display
End Voltage
12.6V(3S)
Display
IN Power Voltage
12.75V
You can inquire various information on LCD screen display during charging or discharging process.
When you press button the charger shows the establishment of user settings. And also you
can monitor the voltage of individual cell by pressing button on using the external balancer
(PB5 or PB6).
The final voltage of Lithium battery being charged.
Display
Int. Temp. 20C
Ext. Temp 0C
The internal temperature of the charger and the
temperature of battery being charged.
(The external temperature only will be displayed
using the thermal probe-EAC110.)
The present voltage of input power.
Display
Pb voltage
12.0V
Display
NiMH Sensitivity
D.Peak 5mV/cell
Various information during charge/discharge
Display
Motor set time
1 min
The running time you set up at motor drive program
General information
The screen shows the trigger voltage for automatic
charge termination.
Selected voltage of Pb battery to be charged.
INC
▶
INC
▶
DEC
◀
INC
▶
- 17 -

- 18 -
Monitoring the voltage of individual cell using balance guard
Display
Safety Timer
ON 120min
Display
Capacity cut-off
ON 5000mAh
Display
Temp cut-off
ON 80C
The state of safety timer setting up.
The state of temperature cut-off setting up.
The state of capacity cut-off setting up.
Using the external Lithium balancer PB5 or PB6, you can
check the individual voltage of cells in the battery pack.
When connect the communication link cable from the
balancer to the temperature port of the charger the
program shows them for maximum 12 cells. The left
values show the voltages of single cell; the right values
are sum of voltage from the first cell. To utilise this feature,
the battery pack must have the balance tab that linked to
each cells.
This shows the highest voltage and the lowest voltage of
the individual cell.
INC
▶
INC
▶
DEC
◀
DEC
◀
Display
Display
Display
S-1 4.20V 4.20V
S-2 8.35V 4.15V
S11 46.35V 4.20V
S12 50.35V 4.20V
High Vol: 4.20V
Low : 4.15V

The output is connected to a battery with incorrect polarity.
This will be displayed in case of detecting an interruption of the
connection between battery and output or voluntarily
disconnecting the charge lead during the operation of charge or
discharge on output.
If the charger can not proceed the operation anymore because
of malfunction of the circuit.
The charge process has been started even the voltage was
selected erroneously, because of deep-discharged or
over-charged Lithium battery. Please adjust the 'check time' at
users setting or check you battery carefully.
The voltage of input power lowers the limit.
The voltage of Lithium battery pack was selected incorrectly.
Verify the voltage of battery pack carefully.
Display
Reversed Polarity
Display
Connection Break
Display
Input Vol Err
Display
Break Down
Display
Display
Vol Select Err
Display
Battery Check....
Over Voltage
The voltage of Lithium battery pack was selected incorrectly.
Verify the voltage of battery pack carefully.
Display
Control Failure
Display
Lipo Series Err
No: xxS ??.00V
Display
Temp Over Err
Display
Out-2 Polarity
Err
If the charger can not proceed the operation anymore because
of malfunction of the circuit.
Battery Check....
Low Voltage
Warning and error messages
902 incorporates a various functions of protective and monitoring system programmed to verify
functions and to monitor the state of its electronics. In any case of occurring error, the screen
displays the cause of error that is self-explanatory with audible sound.
In case of balance mode charging, the voltage of one of the cell
in the Lithium battery pack dropped below the limit, or the
pin-assignment of battery pack was wrong. The charger will
terminate charging process automatically for safety reason.
The 'OUTPUT-2' output is connected to a battery with incorrect
polarity.
- 19 -
The internal temperature of the unit goes too high. Cool down the
unit.

Specifications
Operating voltage range : 11 ~ 18 Volt
Current drain in no-load condition : approx. 100mA
Charge/discharge power : max. 200W
Charge current range : 0.1 ~ 9.9A
Discharge current range : 0.1 ~ 9.9A
Number of cycling charge/discharge : 1 ~ 5 times
Battery data storage : Up to 10 data
NiCd/NiMH battery cell count : 1 ~ 32 cell
Lithium battery cell count : 1 ~ 12 Series
Pb battery voltage : 2 ~ 40V
Weight : 1050 g
Dimensions : 160 X 148 X 60 mm
Warranty and service
- 20 -
Electrical equipment marked with
the cancelled waste bin symbol
must not be discarded in the
standard household waste; instead it should
be taken to a suitable specialist disposal
system.
BANTAM Inc.
#623 Unitech Ville 1141-2
BAEKSEOKDONG ILSANDONGGU
GOYANGSI KYUNGGIDO
KOREA 410-722
Phone: [phone], Fax: [phone]
E-mail: [email protected]
Web: www.bantamtek.com
We warrant this product for a period of one year (12 months) 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 repair or replace without service charge any
product deemed defective due to those causes. Any repairs carried out under warranty do not
extend the original warranty period. You will be required to present proof of purchase (invoice or
receipt). The defective unit has to be sent to us by pre-paid delivery; we will pay for return shipping
cost. This warranty does not cover the damage due to wear, overloading, incompetent handling or
using of incorrect accessories.
Date of purchase/delivery :
Dealer :