Features: 1) Universal Li-Ion battery charger for18650, RCR123A, 17670 3.7V Li-Ion cells 2) Can be used anywhere worldwide with 100-240 V input, good for oversea travel 3) Smart charger automatic cut-off 4) LED light for charging status indication: 5) Orange for charging and green for charging completed 6) If LED light is off, the cells are not suitable for charging with unit. 7) Power Input: AC 110 ~ 240V, 50/60Hz 8) Power Output: DC 5.5V - 350mA 9) Charging time: a) 800mAh: 3 hours b) 2000mAh: 8.5 hours c) 2200mAh: 9.5 hours 10) Dimensions: 3 13 / 16" x 2 3 / 8" x 1 5/16" 11) Weight: 3.9oz charger and adaptor together 12) Cautions: a) Use special caution when working with Li-ion cells, they are very sensitive to charging characteristics and may explode if mishandled b) Make sure user has enough knowledge on Li-Ion rechargeable batteries in charging, discharging and assembly before use c) We are not responsible for any damage caused by misuse or mishandling of theses Li-Ion batteries