Lithuim battery with BMS Lithium Battery. Made with grade A cells. widely used for the down tube electric bike,can suitable for many different ebike type. Single package size: 42X24X20 cm Single gross weight:4.900 kg Package Type: Certificate: CE/ROSH/MSDS/UN38.3include battery, charger, keys etc, 1 battery pack for 1 carton. Light weight design, easy to install and remove; Eco friendly and safe to use With BMS System,Charger, Connector Plug 100% test every battery, Cycle life:800-1000 Times. Warranty:1 years, Certificate:CE/ROSH/MSDS/UN38.3 There are 4-pin, 5-pin discharge sockets to choose from. Application:Electric bike/Electric bicycle for 350W-1500W Motor.syi