Introducing the Enouvation E4 ENBATTE47S1P Power Pack, a high-quality rechargeable lithium-ion battery with a capacity of 4000mAh. This battery is perfect for powering your devices and is compatible with a wide range of electronics. With a voltage of 29.4V and a battery size of 4000mAh, this polymer battery is a reliable and long-lasting power source. The chemical composition of lithium ensures that this battery is safe and environmentally friendly. This unit quantity includes one battery, perfect for getting started with your project.