HBJ 17S-24S 30A Smart BMS with Bluetooth for 72V Li-ion & LiFePO4

The HBJ 17S-24S 30A Smart BMS is a high-voltage battery management system for lithium-ion and LiFePO₄ packs from 17 to 24 cells in series, covering 60V and 72V systems. Its range lines up with the packs people actually build at this voltage. A 20S Li-ion pack (74V nominal, 84V full) is the standard 72V e-bike and scooter battery; a 24S LiFePO₄ pack (76.8V) is its longer-life LiFePO₄ equivalent; and 17S Li-ion (62.9V) covers the 60V class. Chemistry and cell count are set in the app, so one board serves all of them. It supports 30A continuous discharge - about 2,200W at 72V - which suits 72V e-bikes and scooters running controllers rated up to 30A, light EVs, and high-voltage solar or backup banks. At high voltage, cell-level visibility matters more than ever: a single weak cell in a 20S or 24S string drags down the whole pack, and the Bluetooth app shows every cell's voltage live so you can find it before it causes a failure. The common-port design uses one pair of terminals for both charging and discharging, keeping wiring simple on e-bikes and scooters where the charger and controller share a connection. Protection covers overcharge, over-discharge, overcurrent, short circuit and abnormal temperature, backed by cell-level monitoring. For 12V-24V packs, the HBJ 4S-8S 100A smart BMS is the matching low-voltage board.