Rechargeable Lithium Ion Battery 1800 Mah, 3.7V

Rechargeable Lithium Ion Battery is a type of battery commonly used in various types of electronics and electrical devices. 1800 mAh refers to battery's capacity- specifically how much charge it can hold. The higher the mAh, the longer the battery will last before needing a recharge. Lithium-ion is a type of rechargeable battery known for its high energy density, meaning it can store a lot of energy in small space. Unlike disposable batteries, lithium-ion batetries can be recharged many times without significantly degrading their capacity.