3S 20A Li-ion Battery 18650 BMS Board 12.6V

3-Series (3S) Lithium Battery Protection: Specialized management module for 3-cell 18650 lithium-ion / LiPo battery configurations operating at nominal 11.1V and max 12.6V charging voltage.

20A Continuous Discharge Output: Supports up to 20A continuous discharge current with up to 40A peak surge current, ideal for medium-to-high power motor drivers and DIY projects.

Comprehensive Hardware Protection: Features automated cutoffs for overcharging, over-discharging, overcurrent, and short circuits to ensure safe battery operation.

Compact Board Layout: Designed with clearly labeled solder pads (B-, B1, B2, B+, P-, P+) for easy integration into custom battery pack assemblies.

Low Idle Current Draw: Minimizes standby energy consumption, preserving overall battery pack charge over extended unused periods.

Board Material: High-grade FR-4 glass-reinforced epoxy PCB equipped with surface-mount power MOSFETs and protection control ICs.

Technical Specifications:

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

Nominal / Max Voltage: $11.1\text{V}$ nominal / $12.6\text{V}$ max charge voltage.

Continuous Discharge Current: Up to 20A.

Peak Surge Current: Up to 40A.

Board Color: Green PCB.

Usage Advice: Ensure all 3 lithium cells are pre-balanced to equal voltage levels before soldering them to the board terminals.

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

Essential 12V Power Pack Module: Position as a core protection module for converting three 18650 cells into a protected 12V power supply for RC vehicles, power tools, and portable LED lights.

Highlight Compact Reliability: Emphasize how this compact module provides reliable 20A continuous power output with full safety cutoffs to extend battery cell life.

Recommended Cross-Sell Add-ons: Pair with 18650 BMS Board 3S 25A Balanced 12.6V, 18650 BMS Board 3S 40A Balanced 12.6V, 3S 11.1V 10A Battery Management System / BMS Module, 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 20A protection board option.