21700 Rechargeable Battery 3.7V 5000mAh Flat Top Battery for Household Flashlights, Camera, Doorbells etc

【Multiple protections】: The 3.7v 5000mah 21700 lithium-ion battery provides 6 protections, such as temperature protection, short circuit protection, overcharge protection, and overcurrent protection to stabilize the battery. 【Long-lasting and rechargeable】: This 21700 lithium cells is made of durable materials and the quality is very good. Small size and light weight, high capacity, very portable. It can provide you with the necessary charging power source or better help you in emergencies such as travel, emergencies, outdoor adventures, camping or other dangerous situations. 【Applicable Device】 21700 li-ion battery for flashlights, headlights , doorbells, garden lights, solar lights, etc.