Specification:BrandSofirnQuantity2 pcsVoltage3.7VCapacity5000mAhType26650batteryFeatures:Over charge and discharge protection circuit.Safe and environmental friendly.Good packing and safe shipping for the battery.Battery appliances such as emergency lighting, portable devices, power tools.WARNING:DO NOT dispose in fire or heat.DO NOT puncture,damage,and disassemble.DO NOT mix fresh batteries with used batteries.Package included :4 x26650battery2 x Storage box