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 Includes: GRUCORE V2.2 BT-C3100 Charger Wall Adapter Power Supply (US) Operating Manual
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