Battery Features:1.New battery2.High quality and durable3.Provides excellent continuous power sources to your device4.High energy density、 long life battery5.This battery has an extra long life for all your battery powered devicesBattery Specifications:1. Battery Type:18650 battery2. Voltage: 3.7v3. Capacity: 3800mAh4. Charge Time: about 6~8hours5. Rechargeable Times: about 500~7006. Material: Li-ion Battery7. Weight: 2.36oz /67g8. Dimensions: 6.5 x 1.7 cm(L x Dia)9.Color: Blue/RedCharger Features:The AC adapter easily folds out to charge and pack away Smart charger can charge for 18650 Li-ion batteries、 2pcs batteries at a time Suitable for 18650、 16430、 14500、 LIR123A、 10440 Li-ion for 2pcs batteries LED indication for Power On / Charging / Full charge AC110v-240v 47-63Hz input (international charger、 also can be used worldwide) Does not support car powerOutput: DC 4.2VLow Battery Temperature RiseCharger Specification:Item size: 86*41*38mmNet weight: 55gPackaging weight: 65gColor: BlackPackage Includes:2 x 3.7V 3800mAh 18650 Li-ion Rechargeable Battery 1 x Dual 18650 Battery Charger