BMS 7S 30A Li-ion Protection Board

The reliable BMS (Battery Management System) 7S 30A protection and balancing module is designed for assembling and safely operating 24 V battery packs based on Li-ion cells (18650, 21700, etc.). Protection and balancing: continuously monitors each of the 7 cells, preventing overcharge above 4.25 V, overdischarge below 2.75 V and short circuits, and equalizes cell voltages during charging. Common Port: the load and charger connect through shared power terminals (C- / B-), which greatly simplifies the switching circuit. Thermal control and cooling: equipped with a metal heatsink for heat dissipation and a remote NTC temperature sensor for overheat protection. Specifications: Configuration: 7S (7 Li-ion cells in series, nominal 25.2 V / 25.9 V, full charge 29.4 V). Battery type: Li-ion / Li-Po (3.6 V / 3.7 V per cell). Maximum discharge current: 30 A (continuous). Maximum charge current: 15 A. Port type: Common Port (Common Port: B-, C-). Balancing function: Yes (With balance). Overcharge protection threshold: 4.25 V ±0.05 V. Overdischarge protection threshold: 2.75 V ±0.1 V. Protection: overcharge, overdischarge, short circuit, overcurrent, thermal protection (remote NTC sensor). Package contents: BMS 7S 30A board, balancing lead with connector.