3S 12V 18650 lithium battery protection circuit board with balancing and 25A current rating

3S 12V 18650 Lithium Battery Protection Board with Balancing 25A

SKU NA405

$6.99 USD Shipping & tax calculated at checkout
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3S 12V 18650 lithium battery protection board BMS for 3-cell Li-ion packs with balancing and 25A handling; protects from overcharge, over-discharge, overcurrent and short circuit in DIY packs, robotics and backup power.

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Frequently bought together
3S 12V 18650 lithium battery protection circuit board with balancing and 25A current rating 3S 12V 18650 Lithium Battery Protection Board with Balancing 25ANo reviews yet $6.99 This item
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$22.96

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Overview

Product Overview

3S 12V lithium battery protection board for 18650 battery packs, designed as a compact BMS battery management system for 3-cell series lithium-ion packs with cell balancing and up to 25A current handling. It monitors each cell during charging and discharging to support balanced charging, improve pack consistency, and help protect against common faults including overcharge, over-discharge, overcurrent, and short-circuit conditions. A practical choice for DIY 12V li-ion packs, portable power builds, backup battery assemblies, robotics power systems, and other battery-powered electronics using 3S 18650 configurations.

Questions & answers

Frequently asked questions

This board is designed for 3-cell series lithium-ion packs, commonly built from 18650 cells for nominal 12V-class battery assemblies. It is not intended for single-cell, 2S, 4S, or non-lithium battery chemistries.
The pre-soldered version arrives ready for integration into a battery pack, reducing board preparation before wiring. You still need to connect the cells and pack leads correctly and use a charger suitable for a 3S lithium-ion battery pack.
This is a 3S lithium battery management board with cell balancing and up to 25A current handling. It monitors cells during charge and discharge to help protect against overcharge, over-discharge, overcurrent, and short-circuit faults.
It is commonly used for DIY 12V-class lithium-ion battery packs in portable power builds, backup battery assemblies, robotics power systems, and battery-powered electronics. The balancing function helps maintain cell consistency during charging in 3S packs.
No. A BMS helps protect and balance a properly built pack, but it does not repair weak, damaged, or mismatched cells. For best results, build the pack with compatible, healthy lithium-ion cells before connecting the board.

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What's included

Features & Specs

3S Pack SupportDesigned for 3-cell series 18650 lithium-ion battery packs.

12V Li-ion BMSWorks as a compact battery management system for 12V lithium battery assemblies.

25A Current HandlingSupports battery pack current handling up to 25A.

Cell BalancingMonitors individual cells to support balanced charging and better pack consistency.

Overcharge ProtectionHelps protect 3S lithium-ion packs from overcharge conditions.

Discharge Fault ProtectionHelps protect against over-discharge, overcurrent, and short-circuit faults.

Application FitSuitable for DIY 12V Li-ion packs, portable power builds, backup batteries, and robotics power systems.

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