200amp 16S 48V (51.2V) BMS with Bluetooth for LiFePO4 cells. If you are connecting your lifepo4 BMS 48v in series to make a 51.2V battery pack, you will need to run a BMS to make sure your batteries are balanced and make sure they are not overcharged. This BMS is programmable via Bluetooth and iOS, Android smartphone, or PC. We offer same day dispatch if you order, and free shipping Australia-wide. Return and refund policies are also available, visit our website now!