e bike battery 48v 13ah lithium ion battery pack electric bicycle battery fits on down tube of mountain bike with charger,without usb function,suitable for 500w motor, ce rohs gs tüv cycbt cycbt e-bike battery hl02-48v-13ah-cg <br>1.cell type:18650 <br>2.weight: about 5.5kg <br>3.dimension:367(l)mmx110mm(w)x90mm(h) <br>4.rated voltage:48v <br>5.rated capacity:13ah <br>6.charge&discharge mode: cc&cv <br>7.cycle life≥1000 times <br>8.internal resistance≤230mω <br>9.charge: standard charge current:2a,max charge current:4.5a,limited charge voltage:54.6v <br>10.discharge: standard discharge current:10.0a,max discharge current:20.0a,discharge cut-off voltage:32v <br>11.working temp : charge temperature:0~45°c,discharge temperature:-20~55°c <br><b>precautions:</b> <br>1.it is recommended to charge up the battery to 80% if you are going to storage it for a period;<br>2.make sure the battery will be charged at least once every 3 months to ensure the best performance and cycle life <br>3.the battery should be stored in a dry environment, keep away from fire and heat sourcere; <br>4.avoid direct connection of positive and negative poles<br>5.can not be modified. <br><b>packing list:</b> <br>1) 1 pack 48v-13ah cycbt battery <br>2) 1 pcs ac charger <br>3) keys <br>4) 1 user manual <br>5)1 carton box