Description
The 3S Li-ion Battery Protection Board is the heart of any 3-cell battery pack, providing essential safety protection to prevent explosion, fire, and damage. It protects the battery pack from overcharging, over-discharging, over-current, and short circuit conditions. This without balance version is compact and cost-effective, ideal for space-constrained battery pack builds where cell balancing is managed externally or not required. Choosing the correct protection board and applying it appropriately is vital to the longevity of your batteries.
Key Features
- Comprehensive Protection: Guards against overcharge, over-discharge, over-current, and short circuit
- Low Quiescent Current: Under 30µA for minimal power consumption during storage
- Short Circuit Protection: Delayed self-recovery feature
- Compact Design: Slim 58 × 20 × 3.6mm PCB for easy integration into battery packs
- High Current Handling: 15A continuous, 20A transient
Specifications
| Parameter | Specification |
|---|---|
| Model | HX-3S-FL20 (without balance) |
| Size | 58 × 20 × 3.6mm |
| Over-voltage Range | 4.25–4.35V ±0.05V |
| Over-discharge Voltage | 2.3–3.0V ±0.05V |
| Max Operating Current | 15A |
| Max Transient Current | 20A |
| Quiescent Current | < 30µA |
| Internal Resistance | < 100mΩ |
| Charging Voltage | 12.6V – 13V |
| Operating Temperature | -40°C to +50°C |
| Storage Condition | -40°C to +80°C |
| Effective Life | > 30,000 hours |
| Short Circuit Protection | Yes (delayed self-recovery) |
Applications
- Massager Battery Packs
- LED Lamp Backup Power Supply
- 12V Electronics
- Solar Street Light Battery Packs
- Monitoring Standby Power
- DIY 18650 Battery Packs (3S configuration).