Wholesale 21700 3.7V 12Ah Lithium-Ion Battery Packs

This 21700 3.7V 12Ah lithium-ion battery pack has a stable output voltage of 3.7V and a large capacity of 12Ah. It is compatible with many types of devices such as small fans, electric tools, camping lights and solar-powered fans. It adopts high-quality battery cells and a sophisticated battery management system, which can prevent overcharging, overdischarging and short circuits. The outer casing is sturdy, durable and environmentally friendly. With features like long battery life, safety and reliability, it provides stable power for various devices and performs excellently in multiple scenarios. We provide custom battery packs and bulk orders at competitive wholesale prices to meet your needs.