BMS 3S/4S Li-ion/LiPo Battery Protection Board 200A — 12.6V / 16.8V for 18650 Packs, 110mA Balancing, Multi-Function Protection (Suitable for <2000W Loads)

Compact, high-current BMS designed for 3S and 4S battery packs (12.6V / 16.8V) built from 3.7V ternary lithium cells or 18650 cells. This multi-function protection board manages charge/discharge and cell balance while delivering robust safety for demanding applications. Key features and specifications: - Compatibility: Supports 3S and 4S configurations using 3.7V ternary lithium batteries or 18650 cells. - Rated voltages: 12.6V (3S) and 16.8V (4S). - Overcharge protection: 4.28V per cell. - Over-discharge protection: 2.5V per cell. - Additional protections: Abnormal high-voltage protection and temperature protection to safeguard cells under varying conditions. - Continuous current rating: 200A for steady discharge needs. - Instantaneous discharge limit: Protection against surges with a maximum instantaneous limit of 1125A. - Cell balancing: Passive balance current of 110mA to keep individual cells even and extend pack life. - Load suitability: Designed for battery-powered systems with loads under 2000W. Applications: Ideal for high-power battery packs used in electric tools, marine thrusters and other devices that require reliable, high-current protection and cell balancing. The board delivers stable management and multi-layer protection for long-lasting pack performance.