3S 10A 18650 Li-Ion Battery Protection Board 11.1V–12.6V
3S 10A 18650 Li-Ion Battery Protection Board 11.1V–12.6V
3S 10A Li-Ion Lithium Battery Protection Board for 18650 Cells
Keep your 3-series 18650 lithium battery packs running safely and efficiently with this compact 3S 10A BMS Protection Board. Designed for 11.1V to 12.6V battery configurations, this SMD board guards your cells against overcharge, over-discharge, overcurrent, and short-circuit events — all in a small, easy-to-integrate package ideal for DIY battery packs, power tools, laptops, and computer applications.
Key Features
- 3S Configuration: Built for three-cell series lithium-ion / Li-ion battery packs
- 10A Continuous Current Rating: Handles up to 10A load current reliably
- Voltage Range: Operating voltage 11.1V (nominal) to 12.6V (fully charged)
- Charge Voltage Input: Accepts 12.6V–13V charging input
- Wide Operating Temperature: Performs from -40°C to +50°C
- Overcharge Protection: Prevents cells from exceeding safe charge thresholds
- Over-Discharge Protection: Cuts off discharge before cells are depleted beyond safe limits
- Overcurrent & Short-Circuit Protection: Automatically disconnects on fault events
- SMD Package: Surface-mount design for compact, low-profile integration
- No Hazardous Chemicals: High-concern chemical substances: None
- Condition: Brand new
- Quantity: 1 board per order
Technical Specifications
| Cell Configuration | 3S (3 cells in series) |
| Continuous Discharge Current | 10A |
| Nominal Voltage | 11.1V |
| Maximum Charge Voltage | 12.6V |
| Charge Input Voltage | 12.6V – 13V |
| Operating Temperature | -40°C to +50°C |
| Package Type | SMD |
| Application | Computer, DIY Battery Packs, Power Tools |
Compatible Applications
This BMS board is suitable for a wide variety of 3S 18650 lithium battery pack builds, including laptop battery packs, portable power stations, RC vehicles, power tools, and custom electronics projects. Its robust protection circuitry makes it a trusted choice for hobbyists and professionals alike.
Made in Mainland China.
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Frequently Asked Questions
Q: What does a 3S 10A BMS protection board do for my 18650 lithium battery pack?
A: A Battery Management System (BMS) protection board monitors and protects your 3-series 18650 lithium-ion cells from unsafe conditions. It automatically prevents overcharging (above 12.6V), over-discharging (below safe cell voltage), overcurrent draw above 10A, and short-circuit events — extending battery life and keeping your setup safe during both charging and discharging cycles.
Q: What charge voltage should I use with this 3S BMS board?
A: This board is designed to work with a charger output of 12.6V to 13V. Using a dedicated 3S lithium-ion balance charger or a CC/CV power supply set to 12.6V is recommended for optimal charging performance and cell longevity.
Q: Is this BMS board compatible with standard 18650 lithium-ion cells?
A: Yes. This protection board is specifically designed for 3S configurations using standard 18650 Li-ion cells, supporting nominal voltages of 11.1V and a fully charged voltage of 12.6V. It is suitable for building custom battery packs for computers, power tools, and other electronics.
Q: Can this board handle continuous 10A discharge in real-world use?
A: Yes, the board is rated for 10A continuous discharge current. For best results, ensure adequate heat dissipation in your build and avoid sustained currents at the upper rating limit for extended periods. Operating within the -40°C to +50°C temperature range ensures reliable performance.