About This Item: -It can be connected with a USB charging cable (included), and can be charged by power bank, mobile phone charger, computer and other devices. -As a good replacement for damaged or old batteries. -With 2P SM connector, easy to install, suitable for RC cars. Specification: Capacity: 2400mAh Voltage: 7.2V Size: 51*43.5*29mm Package Included: 1-2x Battery .