Product descriptionMaterial: ABSSize: 45 * 65 * 65 (mm)Color: BlackNumber of slots: 4 slotsPackage content: 1 * charger1. 4 Independent slot, Can charge four different types (size) batteries at the same time,Apply to 3.6V/3.7V Li-ion/IMR/INR/ICR batteries: 10440 14500 14650 16340 17335 17500 17670 18350 18490 18500 18650 18700 20700 21700 22650 25500 26650 32650 1.2V Ni-MH / Ni-CD: AAAA /AAA /AA /A/ SC /C/ D.2. Comes with Fast 18W wall charger, put a Li-ion battery into VC4S, the charger automatically detects the batterys internal resistance, and automatically starts 3A charging when the resistance is low.3. In grade mode, the charger tests the real capacity by charging-discharging-fully charging the batteries, so that users can know whether the battery capacity is over-stated. In storage mode, the charger can charge or discharge the battery to its rated voltage of the battery to maximize the battery life, when the battery is not used for a long time.4.Built-in protection circuit can effectively prevent over-current, over-charge, over-voltage, short-circuit, combined with original soft-start function, making charging safer; High Precision, Auto Cut-off When Fully Charged; Constructed from flame retardant and fire resistant ABS materials to extend the chargers lifespan and ensure safety.