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Detailed Description:

The 3S 10A 12V 18650 Lithium Battery Protection Module is an essential component for anyone building a reliable and safe lithium-ion battery pack. This compact battery management system (BMS) is specifically designed for battery packs composed of three 3.7V 18650 cells wired in series ("3S"), providing a nominal output voltage of 11.1V and a fully charged voltage of 12.6V. Its primary function is to protect the cells from the most common forms of battery failure, thereby extending the lifespan of your battery pack and ensuring user safety.

This robust module provides multi-layered protection. It automatically prevents overcharge by cutting off the charging current once a cell reaches its full charge voltage, and it stops over-discharge to prevent a cell's voltage from dropping to a dangerously low level. Crucially, it includes over-current and short-circuit protection, instantly disconnecting the load if the current draw exceeds the safe limit of 10A, safeguarding the batteries and the connected device. Its low quiescent current ensures minimal power draw when not in use. The 3S 10A BMS is a vital part of power tools, custom power banks, robotics, and portable electronic projects, offering peace of mind and reliable performance by expertly managing the intricate charging and discharging cycles of your lithium-ion battery pack.

The 3S 10A BMS (Battery Management System) is a compact yet powerful protection board for 3-series (3S) lithium-ion or lithium polymer battery packs, typically rated for 10Ah capacity and 12.6V full charge voltage. It ensures safe battery operation by preventing overcharging, deep discharge, overcurrent, and short circuits.

This board automatically balances cells during charging, improving battery health and lifespan. It’s widely used in solar energy systems, electric vehicles, power banks, and DIY electronics that require safe and regulated 12V battery output.

Key Features:

• Supports 3S (3-cell) Li-ion or LiPo batteries

• Rated for up to 10A continuous discharge current

• 12.6V full charge, 9V nominal cutoff

• Built-in protections:

  • Overcharge

  • Over-discharge

  • Short circuit

  • Overcurrent

• Cell voltage balancing for extended battery life

• Compact and lightweight form factor

• Ideal for 12V battery-powered systems

Technical Specifications:

How to Use:

1. Connect B+, B-, B1, B2, B3 to the respective battery terminals

2. Connect P+ and P- to your load or charger

3. Ensure proper heat dissipation and do not exceed current ratings

4. Allow the BMS to auto-balance during charging

Applications:

• 12V Li-ion battery packs (3S)

• Solar power storage systems

• Electric bikes & scooters (light-duty)

• DIY power banks and battery boxes

• Robotics and portable power supply systems

• LED lighting and surveillance backups

• IoT device power management

Package Includes:

• 1 x 3S 10A 12V BMS Protection Module Board