INR18650P Shenzhen Zhuoneng 2600mAh 3C13s8p 48V 20.8AhBMS uses IC SH367008 48V 30ACharger • SANS 50.4V 54.6V 58.8V Liion Battery... Charger cutoff voltage is adjusted to 53.3VStep: https://www.yousun.org/archives/1353