The BMS 3S 18650 Lithium Battery Protection Board is a compact circuit board used to manage and protect a three-cell (3S) lithium battery pack built from 18650 cells. Rated for 10A, it sits between your cells and the load, watching voltage and current so the pack charges and discharges safely. It suits DIY power banks, small projects, garden and solar lighting builds, hobby electronics and anyone assembling a rechargeable 18650 pack at home or in a workshop.
Key features
- Designed for 3S (three series) lithium battery packs.
- Built to work with standard 18650 lithium cells.
- Rated for 10A continuous working current.
- Provides overcharge, over-discharge and short-circuit protection.
- Small, lightweight board that fits inside most pack enclosures.
Typical uses
- Assembling or repairing a 3S 18650 battery pack.
- DIY power banks and portable power projects.
- Solar and garden lighting battery storage.
- Hobby, robotics and electronics builds.
How to choose / tips
- Match the board to your pack: this one is for 3S (three cells in series).
- Check that your load's current draw stays within the 10A rating.
- Use balanced, healthy 18650 cells for the best pack life.
- Follow correct wiring order when connecting the cells to the board.
Why tna W rna
At tna W rna we focus on reliable components and honest sourcing. You get quality parts, fast delivery across Egypt, and cash on delivery for a worry-free order.
