4Pcs Sofirn 3.7V 40A 4000mAh 21700 Rechargeable Li-ion Battery Big Flat Top

Specification: Brand Sofirn Quantity 2 pcs Voltage 3.7V Capacity 4000mAh Type 21700 battery Features: 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 : 2 x 21700 battery 1 x Storage box