Lithium battery pack ( li ion battery pack) *Specification:36V/11Ah *Size:256mm*150mm*93mm *Rechargeable li ion battery pack Lithium battery pack ( li ion battery pack)Specification:36V/11AhSize:256mm*150mm*93mmWeight<3.5kgsCycle life>1000 timesCell qty:40pcsThey are widely applied to electic vehicle,too and other equipments. If you have any interests,please don't hesitate to contact us.