3S 5A 12.6V Lithium Battery Protection Board BMS for 18650 Battery

The 3S 5A 12.6V Lithium Battery Protection Board (BMS) is a compact and reliable battery management solution designed for 3-cell (3S) lithium-ion battery packs made from 18650 cells. It provides essential protection functions including overcharge, over-discharge, overcurrent, and short-circuit protection, helping to extend battery life and improve operational safety. With a maximum charging voltage of 12.6V and a continuous discharge current of up to 5A, this BMS board is ideal for DIY battery packs, portable electronics, LED lighting systems, robotics, backup power solutions, and other low to medium-power applications.

Its compact PCB design allows easy integration into custom battery projects while ensuring stable battery performance and protection during charging and discharging cycles.

Key Features

• Designed for 3S (11.1V nominal, 12.6V fully charged) lithium-ion battery packs
• Compatible with 18650 lithium-ion cells
• Continuous discharge current up to 5A
• Overcharge protection
• Over-discharge protection
• Overcurrent protection
• Short-circuit protection
• Helps improve battery safety and lifespan
• Compact size for easy installation
• Suitable for DIY battery pack projects and portable devices

Specifications

• Battery Configuration: 3S (3 Cells in Series)
• Battery Type: Lithium-Ion (18650)
• Nominal Voltage: 11.1V
• Full Charge Voltage: 12.6V
• Continuous Discharge Current: 5A
• Protection Functions: Overcharge, Over-discharge, Overcurrent, Short Circuit
• Balancing Function: No
• BMS Type: Hardware (Standard)
• PCB Material: FR4