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The 3 Series 20A 18650 Lithium Battery Protection Board 11.1V 12V 12.6V is a high-performance BMS (Battery Management System) designed to protect and balance 3-cell (3S) 18650 lithium-ion battery packs. It features an integrated auto-recovery function and is built using 10 low load-resistance MOS tubes to deliver stable current output, improved safety, and extended battery lifespan.
This board supports a continuous discharge current of 20A and includes a balance current of 100mA per cell, ensuring consistent performance across all cells. Ideal for use in electric drills, sprayers, LED lighting, and low-power inverters, it is perfect for DIY battery pack assembly and repair applications.
🔧 Key Features
- Designed for 3S 18650 Li-ion battery packs
- Continuous discharge up to 20A
- Integrated balance function (100mA per cell)
- Supports automatic recovery after protection trigger
- Built-in overcharge, overdischarge, and short-circuit protection
- 10 high-efficiency MOSFETs for stable performance
- Suitable for electric drill motors, LED lights, and sprayers
📐 Technical Specifications
| Product Name | 3 Series 20A 18650 Lithium Battery Protection Board |
| Battery Type | 3S 18650 Li-ion (3 cells in series) |
| Nominal Voltage | 11.1V |
| Charge Voltage | 12.6V |
| Continuous Discharge | 20A |
| Balance Current | 100mA per cell |
| Protection Features | Overcharge, Overdischarge, Short-circuit, Overcurrent |
| Auto Recovery | Yes |
| Number of MOSFETs | 10 (Low resistance) |
| Operating Temperature | -20°C to +85°C |
| Board Dimensions | ~58mm × 42mm × 3mm |
| Weight | ~8g |
📌 Applications
- Electric drills and sprayers
- 12V LED lighting systems
- Low-power DC inverters
- RC hobby projects and battery packs
- Portable electronic devices
💡 Why Choose This BMS Board?
The 3 Series 20A 18650 Lithium Battery Protection Board ensures optimal safety, balance, and reliability for your lithium-ion packs. With auto-recovery, high discharge tolerance, and robust protection circuits, it’s perfect for powering tools and custom electronics with peace of mind.
📦 Package Includes
- 1 × 3 Series 20A 18650 Lithium Battery Protection Board
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