3S 12V 18650 Li-ion BMS Protection Board 8A – 3-Cell PCM
3S 12V 18650 Li-ion BMS Protection Board 8A – 3-Cell PCM
3S 12V 18650 Lithium Battery Protection Board – 8A BMS PCM PCB
Keep your 3-cell 18650 lithium-ion battery packs running safely and efficiently with this compact 3S BMS (Battery Management System) Protection Board. Designed for 11.1V nominal / 12.6V fully charged configurations, this module actively monitors each cell and automatically guards against overcharge, over-discharge, and overcurrent — helping to extend battery life and maintain stable performance across a wide range of applications.
Key Features
- 3S Configuration: Supports 3-cell series lithium-ion (18650) battery packs
- Voltage Range: Nominal 11.1V | Charge voltage 12.6V–13V
- Continuous Discharge Current: Up to 8A
- Overcharge Protection: Cuts off charging when cells reach maximum safe voltage
- Over-Discharge Protection: Prevents cells from dropping below safe operating voltage
- Overcurrent Protection: Automatically disconnects load during excessive current draw
- Wide Operating Temperature: -40°C to +85°C
- Package Type: SMD (Surface Mount Device) module — compact and easy to integrate
- Condition: Brand new
Specifications
| Cell Configuration | 3S (3 Cells in Series) |
| Nominal Voltage | 11.1V |
| Charge Voltage | 12.6V – 13V |
| Max Continuous Current | 8A |
| Operating Temperature | -40°C to +85°C |
| Package | SMD Module |
| Quantity | 1 piece |
| Country of Origin | Made in Mainland China |
Common Applications
- DIY 12V lithium battery packs
- Laptop and computer battery rebuilds
- RC vehicles and robotics
- Portable power tools and devices
- Solar energy storage systems
- LED lighting power banks
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Frequently Asked Questions
Q: What does a 3S BMS protection board do for my lithium battery pack?
A: A 3S BMS (Battery Management System) protection board monitors and balances three lithium-ion cells connected in series. It actively prevents overcharging (above 12.6V), over-discharging (below safe cell voltage), and overcurrent events — protecting both your cells and your connected devices from damage and extending overall battery pack lifespan.
Q: Is this BMS board compatible with standard 18650 lithium-ion cells?
A: Yes. This 3S PCM/PCB board is specifically designed to work with standard 18650 Li-ion cells wired in a 3-cell series configuration, giving a nominal pack voltage of 11.1V and a full-charge voltage of 12.6V. It supports a continuous discharge current of up to 8A, making it suitable for a wide range of DIY electronics and power projects.
Q: What is the maximum operating temperature range for this protection board?
A: This BMS module is rated for an operating temperature range of -40°C to +85°C (-40°F to +185°F), making it suitable for use in both cold-weather and high-temperature environments.
Q: How many boards are included in one order?
A: Each order includes 1 (one) BMS protection board. If you need multiple units for a larger project, simply adjust the quantity before adding to your cart.