18650 BMS Board 3S 25A Balanced 12.6V

3-Series (3S) Lithium Battery Management: Designed specifically for 3-cell 18650 lithium-ion / LiPo battery packs with a nominal voltage of 11.1V and max charging voltage of 12.6V.

Integrated Cell Balancing Circuit: Features built-in auto-balancing functionality to equalize cell voltages during charging, maximizing battery lifespan and overall energy capacity.

25A Continuous Discharge Current: Delivers up to 25A continuous discharge (with peak surge support), making it ideal for high-drain applications like power tools and motor drivers.

Comprehensive Multi-Protection Safety: Provides automatic cut-off protection against overcharging, over-discharging, overcurrent, and short circuits to prevent cell degradation or thermal runaway.

Compact PCB Layout: High-density board design with clear, solderable pads (B-, B1, B2, B+, P-, P+) for easy integration into custom battery pack assemblies.

Board Material: High-quality FR-4 glass-reinforced epoxy PCB with surface-mount power MOSFETs and balancing circuitry.

Technical Specifications:

Series Configuration: 3S (3 Cells in series).

Charging Voltage: 12.6V - 13.0V DC.

Continuous Discharge Current: Up to 25A.

Balance Function: Yes (Integrated passive cell balancing).

Board Color: Green PCB.

Usage Advice: Ensure all 3 lithium cells are balanced in voltage (same state of charge) before spot welding or soldering them to the BMS board leads.

Maintenance: Keep the board clean, dry, and protected from static electricity or metallic debris that could short out solder pads.

Essential 3S Power Pack Solution: Position as a standard protection module for converting loose 18650 cells into 12V battery packs for DIY power banks, cordless drills, solar power systems, and RC models.

Highlight Balanced Charging Advantage: Emphasize how integrated cell balancing prevents individual cell overcharging, significantly extending the life and health of multi-cell 18650 battery packs.

Recommended Cross-Sell Add-ons: Pair with 18650 BMS Board 3S 40A Balanced 12.6V, 3S 20A Li-ion Battery 18650 BMS Board 12.6V, 18650 BMS Board 4S 40A Balanced 16.8V, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Hardware Battery Management System collection page as your standard 3S 25A balanced protection board.