Pre Order-Z20 PLUS Battery-LGThis battery uses LG cells. Battery Maintenance Tips: 1. Charge the battery once every three months if it's not in use for a long time. 2. Remember to turn off the power after each ride. 3. When the battery is out of power, pay attention to charging it in time. Improper use may cause damage to the battery, which may result in the inability to provide after sales service.