When particular slot working mode need to be changed, press SLOT button to select the desired slot and then press MODE button to choose wanted
working mode.
When working mode is changed, working current adjustment is possible.
6.2 Current Selection
Within the first 6 seconds after inserting battery or right after power up, press the “CURRENT” button to select desired charge current for slots loaded with
battery at the same time. Current setting can not be altered once setting has been confirmed in the initial stage. If different working current is needed
afterwards, either changing working mode or rechargeable battery must be taken out and inserted again. Discharge current is set to the selected charge
current selected.
6.3 Display Selection
“DISPLAY” button is for toggling display information for voltage, current, capacity, work time etc. Press “Display” button for 3s, it will turn on back light
permanently. Press this button for another 5s to de-activate this function.
6.4 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 selection
processing in the sequence cycle of 1->2->3->4->4 slots->exit.
7.
Overheat Protection
When charger works at high current, there will be massive heat generated inside the charger. To achieve a good charging result as well as keeping batteries
at the top condition, lowest temperature rise is very important for both charger and battery. BT-C3000 charger is equipped with a temperature controlled
cooling system. When internal temperature is lower than 40C, fan will be stopped. When internal temperature or battery temperature is over 40C, fan will be
switched on.
With our improved charging circuit design, for normal good quality battery with low impedance, heating built up on battery during charging process is almost
unnoticeable. However during the last charging stage for Ni-Cd or Ni-Mh batteries, when battery is almost full, batteries can become hot. This is normal: the
larger charging current applied, the more heat will build up. When battery temperature is sensed to be over 60C, then over heat protection will be kicked in
for safety reason. When overheating occurs, current working mode for all 4 slots will be automatically halted. To tell if it is in the state of overheating
protection mode, charging current will be reduced to 0mA.
Charging/discharging process will only resume after battery temperature drops below 40 degrees Celsius.
8.
Operation Modes and Display
8.1 Operation Modes:
Charge Mode: The rechargeable battery is charged up to its maximum capacity. Accumulated charging capacity is displayed at mAH display mode.
For Ni-MH or Ni-Cd batteries, after charging mode is completed, a trickle charge current (around 10mA) will be applied. For Li-ion battery, once
charge mode is completed, no trickle charge current will be applied. When Li-ion battery voltage is dropped less than 4.0v, then charging will be
activated until battery voltage reaches 4.20v.
Discharge Mode: It is used to reduce the memory effect. The rechargeable battery is discharged to a preset battery voltage (0.9v for Ni-Cd & Ni-Mh,
2.8v for Li-ion batteries). Once discharge is finished, total accumulated discharging capacity is displayed at mAH display mode, showing how much
energy is discharged from the battery, which is always referring to the accumulated discharging capacity. Trickle charge current will be applied after
discharge cycle is finished, preventing the batteries from discharging any further for NiMh and NiCd battery.
Refresh Mode: Rechargeable battery is charged and discharged repeatedly to optimize to its maximum capacity. Old rechargeable batteries or
those that have not been used for a long period of time can be restored to their rated capacity. Depends on selected charge current, battery
capacity and battery impedance (healthy state), it can take tens hours or even days time before complete. Refresh mode will make 3 complete
discharge-charge working cycles before complete. After discharge cycle is completed, total discharged capacity will be kept displayed in mAH
display state even next charging cycle is in progress.
Test mode: Checks the present capacity of a rechargeable battery. The maximum capacity is determined by discharging the rechargeable battery
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.
