... :About 3.1kg 3)Factory Price 4)Long cycle life high quality electric bicycle battery lithium ion type Specification Tube type ... -115USD Advantage:1, High energy density2, High working vocells3, Pollution-freeltage for single battery4, Long cycle life5, No memory effect6 ... lighter weightOthers:1, OEM orders are available2, Superior quality and cost-performance ratio3, Tags, plugs and connectors ...