Latest 100% OPUS BT-C3100 V2.2 Smart Battery Charger
Main Features:
- V2.2 Has NEW LED back light displays charging / discharging / quick test / circuit more clearly in the dark
- New refresh mode can show you batteries capacity， letting you know real magnitude
- The charging current can be selected to be 200mA， 300mA， 500mA， 700mA or 1000mA (1500mA and 2000mA can only be applied when only slot 1 or 4 is selected). Default discharging current is 500mA
- It provides four independent charging slots for rechargeable batteries. The charger can charge batteries of different types and sizes and with different capacities at the same time
- The charger integrates the minus delta voltage ( -ΔV ) for NiCd or NiMh battery charging termination， and for Li-ion batteries charging to 4.2V with pre-selected constant current. ( 3.7 Li-FeO4 and 4.35 type high voltage batteries charging mode can be selected through switch on board )
- The charger also includes overheat detection to protect rechargeable batteries and charger itself from overheating
- New added quick test mode to test the battery impedance
- Four Working Mode Available at User\'s Choice: Charge， Discharge， Test， Quick Test and Refresh
- Easy to read LCD with back light Showing Battery Voltage， Charge / Discharge Current， Charging Time， Battery Capacity etc.
- Designed for AA ( LR6 ) and AAA ( LR3 )NiCd， NiMH or 3.7V Li-ion rechargeable batteries in size type of 10440， 14500， 16340， 17335， 17500， 18490， 17670， 18650
- Ideal for office and home use
- Operating temperature: 0 - 40 deg.C
- Max charging capacity: Up to 20000mAh
- Power adapter: DC 12V， 3.0A ( Output )， 100 - 240V， 50 / 60Hz ( Input )
- Note: Battery not included
Specification:
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When display is flashing it is possible to select mode and current.
Using the slot button it is possible to reselect a slot and change parameters for it， also when charger is working.
When putting multiple batteries in the charger at the same time， it is possible to select mode and current simultaneous for all of them (Very nice).
When charging or discharging it is possible to use the DISPLAY button to select between V， mA and mAh.
The display button can also be used when the charge/discharge is finished， but the charger will change back to FULL display rather quickly.
Here is an example where I have selected different functions for each slot.
Each time a button is pressed， the light turns on for a 20 seconds.
The FULL and NULL message can also be seen.
The charger uses an external 12 volt power supply at 3A (see later).
It has a fan， this is necessary to handle all four channels at full power. Even with only one channel in use the fan， it start and stop very often. The fan is not very loud， but due to the starting and stopping it is very annoying.
The charger uses the classical slider construction to handle most battery sizes. The slider works smoothly and can handle sizes from 32 mm to 72.5 mm.
For measuring internal resistance the slider is not very good， it often has a HIGH connection resistance.
A couple of different NiMH batteries in the charger.
And some LiIon batteries.
Using only slot 1 and 4， the maximum charge current is 2000mA.
In all other cases the maximum charge current is 1000mA.
The maximum discharge current is always 1000mA.
Charge currents: 200， 300， 500， 700， 1000， 1500， 2000
Discharge currents: 200， 300， 500， 700， 1000
The charger can easily handle 70 mm long batteries
It is recommended to charge smaller batteries in the two center slots.
The charger has an internal switch marked with 3.7V， 4.20V and 4.35V. I have not tested this switch， because it is internal， but it might be possible to charge other Li-ion chemistries.
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