Original Opus BT-C3100 V2.2 Smart Digital Intelligent 4 LCD Slots Universal Battery Charger for Rechargeable Battery EU/US Plug
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
This charger is a analyzing LiIon and NiMH charger, this means the charger can both charge and discharge while measuring. The total number of function is large and this means the technical section in this review is very large.
When the charger is turned on, it displays test where all the text can be seen.
When startup is finished it is possible to select mode:
- CHARGE: Charge battery with 200 to 1000 (2000) mA.
- DISCHARGE: Discharge battery with 200 to 1000 mA.
- DISCHARGE REFRESH: Discharge and charge the battery 3 times.
- CHARGE TEST: Charge, discharge and charge the battery, show how much current was discharged.
- QUICK TEST: Measure the internal resistance of the battery.
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.
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.
