Universal input voltage, can be used all over the world Each of the 4 slots works independently Compatible with most of the cylindrical 3.6/3.7 V lithium batteries Support the batteries voltage from 0V to charge Intelligent charging : constant current, constant voltage, trickle charge Automatically stops charging when complete Built-in multiple protection function : under voltage, over voltage, over current, over temperature, short circuit protection Designed for optimal heat dissipation, prolong the life of the product Typ: AC Ladeger?t Brand HZMLBC Model 828D Color Black Material ABS Size 145*100*35mm Cable length 60cm Input AC 100-240V 50/60Hz Input power Max 20W Output 4.2V 500mA*4 Compatible with Li-ion 26650, 22650, 18650, 17670, 18490, 17500, 17335, 16340(RCR123), 14500, 10440