General description USB Universal Smart 18650 Battery Charger is designed for charging various rechargeable batteries including Li-Ion, Ni-Mh, Ni-Cd, and LiFePO4. It features four independent charging slots that can charge different battery types simultaneously, ensuring high efficiency and excellent quality. Technical specifications Charging slots: 4 individual slots Maximum charging current: 800mA per slot Compatible battery types: Li-Ion (IMR, INR, ICR), Ni-MH, Ni-Cd, including sizes: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430, 14650, 16340 (RCR123), 16500, 16650, 17350, 17500, 17650, 18350, 18490, 18500, 18650, 22500, 22650, 25500, 26500, 265000, A, AA, AAA, AAAA, SC Display: LCD showing voltage, current, charging time, mode, battery type, internal resistance, and battery capacity Material: PC+ABS, flame retardant Usage Only charge rechargeable batteries Monitor battery parameters such as voltage (V), current (mA), time (h), capacity (mAh),