Japcell BC-4001 Instructions - page 2
5.2. CUrrEnt Selection
Within the first 6 seconds after in-
sert the battery or power up, press
the “CURRENT” button to select
desired charge current for slots
loaded with battery at the same
time. The current can not be al-
tered once the setting has been
confirmed in the initial stage. If one
wants to change the applied cur-
rent afterwards, the rechargeable
battery must be taken out and in-
serted again. Discharge current is
automatically set to half of the se-
lected charge current.
If three or less batteries are inserted in slot 1,4 and (2 or 3), the charg-
ing current can further be selected for 1200 or 1400mA for slots 1 and
4. Maximum discharge current is limited to 500mA when 1200mA or
1400mA selected.
If 4 slots are used at the same time, the maximum charging current will
be limited to 1000mA.
5.3. DISPlay Selection
During or after the work mode complete, press the “DISPLAY” button to
toggle among the display mode for voltage, current, capacity and work
time.
5.4. SlOt Selection
This button is used to select desired slots for different working mode,
charge current or display mode. Press SLOT button will start the slots se-
lection processing in the sequence cycle of 1->2->3->4->4 slots->exit.
6. Overheat Protection
When overheating occurs, either from battery over 60 degrees Celsius
or controller board over 77 degrees Celsius, the charging or discharging
current will be automatically halted. Four battery temperature sensors and
two controller board temperature sensors are equipped to detect the over
heating situation. If controller board over heat is detected, current will be
suspended for the corresponding 2 battery slots at the same time. If battery
temperature over heat detected, only the over heated channel current will
be halted accordingly.
The charging/discharging process will only resume once the temperature
of the rechargeable batteries drops below 40 degrees and charger control-
ler board drops below 50 degrees. This feature is extremely important in
protecting the batteries or charger itself from over heating.
7. Operation Modes and Display
7.1. Operation Modes
Charge Mode: The rechargeable battery is charged up to its maximum
capacity.
Discharge Mode: It is used to reduce the memory effect. The recharge-
able battery is discharged to a preset battery voltage (0.9v). Once dis-
charge is finished, the battery will be charged at the pre-selected charg-
ing current. Discharge current is always half of the selected charge
current.
refresh Mode: The rechargeable battery is charged and discharged re-
peatedly to optimize to its maximum capacity. Old rechargeable batteries
or rechargeable batteries that have not been used for a long period of
time can be restored to their rated capacity. Depends on the selected
charge current, it can take tens hours or even days time before com-
plete. Refresh mode will make 3 complete discharge-charge working
cycles before complete.
test mode: Checks the present capacity of a rechargeable battery. The
maximum capacity is determined by discharging the rechargeable bat-
tery after it was fully charged. If the maximum capacity is much lower
than the rated capacity then it may reach the end of its lifetime.
Quick test mode: The charger will analyze the dynamic internal battery
resistance by applying a load current and this current reading is referred
to the voltage drop detected on the battery. Within 10s, the tested bat-
tery resistance will be displayed in the unit of milliohm. For good quality
batteries, the internal resistance is very low: in the range of 20 ~ 80 mil-
liohms. If the battery internal resistance is over 500milliohms, then these
batteries are not good for holding enough energy. Always to use batter-
ies with close range internal batteries when they are used in serial to
achieve maximum battery life. Alkaline and any other 1.5v batteries can
be tested on this charger. If a completely empty battery is to be tested,
it is not possible to give any correct reading. Please be noted that since
the internal battery resistance can be very small, and contact resistance
can be a major influence factor, thus same battery tested in different slot
or even at the same slot with different contact condition, the reading can
be varied for 10% to 20%. This is normal.
7.2. Display
Charge/Discharge Current: The instantaneous current is displayed.
time Elapsed: The charging/discharging time of the last cycle is dis-
played.
accumulated Capacity: The accumulated battery capacity is displayed
in mAh or Ah.
Charge Voltage: The instantaneous battery voltage is displayed.
at Quick test mode: It shows the internal battery resistance.
Full: After the rechargeable battery is fully charged in any of the opera-
tion modes, trickle charging will be started automatically. Trickle charging
prevents the rechargeable batteries from being overcharged and com-
pensates for self-discharging of the batteries.
8. Maintenance
The device is maintenance-free but should be cleaned occasionally. When
cleaning, the device must be removed from any power source. Only use
dry and soft cloth to clear the housing of the charger. Do not use abrasive
or solvents.
9. Disposal
9.1. Disposal of waste electrical and electronic equipment
In order to preserve, protect and improve the quality of environment, pro-
tect human health and utilize natural resources prudently and rationally,
the user should return unserviceable product to relevant facilities in accor-
dance with statutory regulations.
The crossed-out wheeled bin indicates the product needs to be disposed
separately and not as municipal waste.
9.2. Used batteries/rechargeable batteries disposal
The user is legally obliged (battery regulation) to return used batteries and
rechargeable batteries.
Disposing used batteries in the household waste is prohibited!
Batteries/rechargeable batteries containing hazardous substances are
marked with the coursed-out wheeled bin. The symbol indicates that the
product is forbidden to be disposed via the domestic refuse. The chemical
symbols for the respective hazardous substances are Cd= Cadmium, Hg
= Mercury, Pb = Lead.
You can return used batteries/rechargeable batteries free of charge to any
collecting point of your local authority.
10. technical Data
Operating Voltage
12V DC
Power Adapter
Input:
100~240V~,
50/60Hz
Output:
12V DC / 1.5A
Charging Current range
200 ~ 1400 mA
Discharging Current range
100 ~ 500 mA
Max. Charging Capacity
20000mAh
Operating Temperature
0 to 40˚C
For further information please contact:
www.japcell.eu
hello@japcell.eu