Blue 14500 Li-ion Battery 4200mAh 3.7V

A 14500 cylindrical lithium-ion rechargeable battery with a nominal voltage of 3.7V. It is designed for compatible lithium battery applications such as small flashlights, electronic projects, portable devices, and custom battery packs. The printed capacity is 4200mAh, so actual capacity should be verified using a battery capacity tester before professional use