3S BMS 11.1V 12.6V 25A W/Balance Li-Ion Battery Pcb Protection Board

3S BMS 11.1V 12.6V 25A W/Balance Li-Ion Battery Pcb Protection Board

The 3S 25A Lithium Battery Protection Board is specially designed for 3-cell (3S) 11.1V / 12.6V lithium-ion battery packs, providing reliable protection and stable performance for various battery-powered applications. This PCB helps protect batteries from overcharging, over-discharging, short circuits, and excessive current flow, ensuring improved battery life and operational safety.

The board supports a continuous working current of up to 25A and can withstand transient peak currents between 34A and 40A, making it suitable for high-power devices and DIY battery projects.

For safe and proper operation, the wiring connections must strictly follow the specified configuration:

B- : 0V
B1 : 3.7V
B2 : 7.4V
B+ : 11.1V

Incorrect wiring may damage the board or cause short circuits. It is also recommended to use battery cells with the same voltage level, capacity, and similar internal resistance when connecting batteries in series.

Key Features:

Designed for 3S 11.1V / 12.6V Li-Ion battery packs
Continuous current support up to 25A
Peak transient current: 34A – 40A
Over-charge protection voltage: 4.25V – 4.35V ±0.05V
Over-discharge protection voltage: 2.3V – 3.0V ±0.05V
Built-in short circuit protection
Low standby power consumption
Compact and lightweight PCB design
PCB Dimensions: Approx. 56mm × 45mm × 1.2mm

Applications:
Suitable for lithium battery packs, DIY power banks, portable devices, electric projects, backup power systems, robotics, and other battery-operated electronics.

Note:
Product information is provided as accurately as possible based on manufacturer and supplier details. Minor variations may occur depending on production batches and suppliers.