This 115570 3.7V 5000mAh Lithium Polymer (LiPo) Battery Cell is a high-capacity, rechargeable power source designed for high-density energy storage in compact devices. Delivering 18.5Wh of energy, this lightweight pouch cell features flat solder tabs for secure terminal connections, making it an excellent choice for replacing worn-out internal device batteries or powering custom DIY electronics projects.