Universal Li-Ion Plug-in Charger for 18650 cells; (1)Power Input: AC110~240V, 50/60Hz (2)Power Output: DC4.2V-600mAh (3)Charging time 800mAh: 1.6 hours 2000mAh: 4 hours 2200mAh: 4.5 hours (4)Can be used anywhere worldwide with 100-240 V input. Good for overseas travel. (5)Smart charger automatic cut-off (6)Weight:3 oz charger