Hailong3 48V 13AH Battery E-bike Electric Bicycle lithium Motor BMS. Included: 1x 48V 13AH lithium battery; 1x 54.6V, 2A battery charger(EU/UK, optional), 2 keys, mounting plate. Electric Bike Battery Specifications. Composed Type: 13Series 6Paralles 13S6P. Cells: Powerful 3.7V 2500mAh 10A 5C Cells. BMS: 30Amp continuous 100±10Amp maximum. Charge Cut-off Voltage: 54.6V. Discharge Cut-off Voltage: 39V. Discharge Temperature: -20 to 65°C. Charge Temperature: 0 to 45°C. Battery Weight: 3.7kg. Cycle life:? 80% capacity after 1000 cycles. Packages cannot be sent to any island addresses such as Faroe Islands, Jersey (Channel Islands), Canary Islands. Certified by CE, ROHS and UN38.3. If the battery has an on/off switch, be sure to turn off the power switch. Please insulate the positive and negative terminals of the battery as you received it. Please use foam or other materials to fix the battery so that the battery will not shake in the carton. Please fully charge the battery immediately after you receive it to activate the battery for maximum capacity. In order to maintain the highest power and longest service life, please ensure that the battery is charged at least once every three months, and if you are going to store it for a long period of time, please make sure that the battery capacity is maintained at more than 80%. Batteries should be kept in a dry environment, away from fire and water. When the battery capacity is lower than 20%, please charge it in time to ensure the battery life. We will handle it properly. CE UKCA Certification And Test Reports.