Description
The HX-2S-JH10 2S 8A BMS Protection Board is a compact and practical battery management and protection module designed for 2S 18650 Li-ion battery packs. It is suitable for battery packs with a nominal voltage of 7.4V and a full-charge voltage of approximately 8.4V.
This 2S Li-ion BMS board helps protect your battery cells during charging and discharging by providing overcharge, over-discharge, overcurrent, and short-circuit protection. It also monitors cell voltage to help maintain safer battery operation and prevent common conditions that can damage lithium-ion cells.
With its compact 40 × 17 × 3.5mm PCB size, the HX-2S-JH10 can be easily integrated into DIY battery packs and portable electronic projects. The board uses MOS transistor control to manage charging and discharging while maintaining low standby power consumption.
Key Features
- Designed for 2S 18650 Li-ion battery packs
- 7.4V nominal battery voltage
- 8.4V full-charge voltage
- Supports up to 8A working current
- Up to 10A instantaneous current
- Overcharge protection
- Over-discharge protection
- Overcurrent protection
- Short-circuit protection
- High-precision battery voltage detection
- MOS transistor-based charge and discharge control
- Very low quiescent current
- Compact and lightweight PCB design
- Suitable for DIY lithium-ion battery projects
Pin Configuration
| Pin | Function |
|---|---|
| B+ | Battery positive |
| B- | Battery negative |
| BM | Connection point between the two battery cells |
| P+ | Output / Charging positive |
| P- | Output / Charging negative |
Protection Functions
The HX-2S-JH10 BMS provides several important protection functions to help safeguard connected Li-ion cells:
Overcharge Protection: Helps prevent individual cells from being charged beyond the specified voltage range.
Over-Discharge Protection: Disconnects the load when cell voltage falls below the specified protection threshold.
Overcurrent Protection: Helps protect the battery pack and BMS from excessive current draw.
Short-Circuit Protection: Disconnects the load when a short circuit is detected, with automatic recovery after the protection condition is cleared.
Applications
This 2S 8A 18650 BMS board can be used for:
- DIY 7.4V Li-ion battery packs
- 18650 battery projects
- Portable electronic devices
- Low-power RC projects
- DIY power banks
- Battery-powered gadgets
- Small robotics projects
- Rechargeable lithium-ion devices
- Electronic hobby projects
Important Note
This protection board is designed for standard Li-ion battery cells and should not be used with LiFePO4 (lithium iron phosphate) batteries. It is also not recommended for applications involving high-current motors or other loads that exceed the board’s specified current limits.
Always use compatible Li-ion cells and follow the correct wiring configuration when installing the BMS.
Specifications
| Specification | Details |
|---|---|
| Model | HX-2S-JH10 |
| Battery Type | Li-ion / 18650 |
| Battery Configuration | 2S |
| Nominal Voltage | 7.4V |
| Charging Voltage | 8.4V–9V |
| Board Size | 40 × 17 × 3.5mm |
| Upper Limit Working Current | 8A |
| Upper Limit Instantaneous Current | 10A |
| Over-Discharge Voltage | 2.5–3.0V ±0.05V |
| Overcharge Voltage | 4.25–4.35V ±0.05V |
| Quiescent Current | <10µA |
| Internal Resistance | <300mΩ |
| Working Temperature | -40°C to 50°C |
| Storage Temperature | -40°C to 80°C |
| Short-Circuit Protection | Yes, with delayed self-recovery |
| Expected Life | >50,000 hours |
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