3S 20A 18650 Li-Ion Battery Protection Board (BMS) – 12.6V

The 3S 20A 18650 Battery Protection Board (BMS) is designed to provide reliable protection and management for 3-cell lithium-ion battery packs. Compatible with 18650, 26650, and lithium polymer batteries, it safeguards the battery pack during charging and discharging by protecting against overcharge, over-discharge, overcurrent, and short-circuit conditions. With support for up to 20A output current and 252W maximum power, this compact BMS is suitable for battery-powered equipment, robotics, portable power systems, solar storage applications, and DIY battery pack projects.

• Designed for 3S lithium-ion battery packs

• Compatible with 18650, 26650, and LiPo batteries

• Supports charging voltage up to 12.6V

• Maximum output current of 20A

• Maximum power handling up to 252W

• Overcharge protection function

• Over-discharge protection function

• Overcurrent protection function

• Short-circuit protection function

• Compact PCB design for easy integration

• Suitable for high-current applications

• Improves battery safety and lifespan

• Stable charging and discharging management

• Ideal for DIY battery pack construction

• Battery Type: Lithium-Ion, Lithium Polymer
• Compatible Cells: 18650, 26650, LiPo Batteries
• Battery Configuration: 3S (3 Cells in Series)
• Nominal Battery Voltage: 11.1V
• Charging Voltage: 12.6V
• Maximum Output Current: 20A
• Maximum Output Power: 252W
• Maximum Charging Power: 252W
• Material: Metal Components and PCB
• Board Dimensions: 64 × 20 × 3.4mm
• Protection Functions: Overcharge, Over-Discharge, Overcurrent, Short Circuit
• Application: Battery Pack Protection and Management
• Installation Type: Integrated Battery Management Board

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