Most of store sell laser pointer pen or flashlight without battery This is the better 18650 battery for your laser pen or flashlight .100% Brand NewNo memory effect Environmentally friendly Size: 65mm x 18mm (2.55 in x 0.7 in) Battery Type: 18650 Rechargeable BatteryVoltage: 3.7vCapacity: 3200mAhMaterial: Li-ion BatteryRechargeable times: Up to 1800 timesColor: Deep BlueCompatible with: Battery appliances such as emergency lighting， portable devices， power tools.WARNING:DO NOT dispose in fire or heatDO NOT puncture，damage，and disassembleDO NOT mix fresh batteries with used batteriesCharger features: Type: Electric Color: black Imput : AC 110-220V 47-63HZ Output current: DC3.7V 500mah Charging time: 2 to 4 hours Can charge 18650/16340/14500/10440 ect.Package Included:2 x Rechargeable 18650 3200mAh Batteries1 x Charger