B2B Enquiry:
3S 15A 18650 Lithium Battery Protection Board
The 3S 15A 18650 Lithium Battery Protection Board is a compact and efficient BMS module designed to safeguard rechargeable lithium cells. It connects three 18650 batteries in series to deliver a nominal output of 11.1V–12.6V, ensuring both stable power and extended battery lifespan.
Engineered for 3S configurations, this 3S 15A 18650 Lithium Battery Protection Board is suitable for DIY battery packs, power banks, RC projects, LED lighting systems, and backup energy storage. Its compact 56 × 45 mm PCB with low resistance design ensures efficient energy transfer while keeping heat generation minimal.
🔧 Key Features
- Supports 3S lithium battery pack assembly (3 × 18650 cells)
- Integrated overcharge, over-discharge, and short circuit protection
- Continuous discharge current up to 10A, peak current up to 20A
- Low internal resistance (< 4mΩ) for high efficiency
- Automatic recovery after fault conditions
- Lightweight PCB design, only 8 grams
📐 Technical Specifications
| Model Number | HX-3S-FL25A-A |
| Supported Cells | 3 × 3.7V 18650 Lithium Batteries |
| Nominal Pack Voltage | 11.1V (max 12.6V) |
| Charge Cutoff Voltage | 12V ± 0.05V |
| Discharge Cutoff Voltage | 2.5V per cell |
| Continuous Current | 10A |
| Peak Current | 20A (short duration) |
| Quiescent Current | Less than 8 µA |
| Internal Resistance | Below 4 mΩ |
| Board Dimensions | 56 × 45 × 2 mm |
| Weight | 8 g |
📌 Applications
- DIY 3S 18650 battery packs
- RC cars, drones, and model projects
- LED lighting and emergency lamps
- Portable power banks and energy storage
- Electronics requiring overcurrent protection
💡 Why Choose This Product?
This protection board delivers dependable performance with advanced safety features, making it an essential component for any 3-cell lithium battery pack. Its compact design and high efficiency ensure safe power management in demanding applications.
📦 Package Includes
- 1 × 3S 15A 18650 Lithium Battery Protection Board
Reviews
There are no reviews yet