Specifiction: Smart charger can charge for 16340 Li-ion battery. Two at a time Suitable for 16340 Li-ion battery LED indication for Power On / Charging / Full charge AC100v-240v 50-60Hz input (international charger， can be used worldwide) Output: DC 4.2V 600mAh Package included: 1 x battery charger 100 - 240V (no Battery)1 x US Plug Adaptori，If you want (EU Plug)，please click this link.