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With a 25A continuous rating, the 3S 25A 12.6V Li-ion Battery BMS Protection Board monitors three series-connected cells. It regulates charging at 12.6V while preventing cell damage during frequent load shedding. This 3S lithium battery protection board maintains pack stability in high-drain DIY electronics.
Key Features
- Integrated Cell Balancing: 40-50mA balance current. Keeps individual cell voltages identical to stop premature battery pack degradation.
- Short Circuit Protection: Instantaneous current cutoff logic. Prevents fire if output leads touch during assembly or use.
- 40A Peak Current: 35-40A surge capacity. Handles the high startup draw of DC motors without the circuit tripping.
- Low Internal Resistance: Under 100mΩ impedance. Reduces energy loss as heat during high-current discharge cycles.
- Compact Footprint: 56x45x1.2mm board dimensions. Fits into tight 18650 battery enclosures or custom power bank housings.
Frequently Asked Questions
How to connect 3S 25A BMS?
Solder battery leads to B-, B1, B2, and B+ pads in strict numerical order. Skipping the sequence often destroys the sensing logic on the board.
Is 3S 25A BMS suitable for drill?
The 40A peak rating accommodates the high torque demands of 12V power tools. It prevents the module from shutting down when the motor stalls under load.
