
Description
The 3S BMS Module HX-3S-FL25A-A is a Battery Management System (BMS) designed specifically for 3-cell 18650 lithium-ion batteries in series, providing a nominal voltage of 11.1V. It is capable of handling a continuous discharge current of 25A, making it suitable for high-performance applications such as power banks, electric vehicles, and other devices that require a stable and safe power source. The BMS ensures optimal charging and discharging processes, balancing the cells and protecting them from overcharging, overdischarging, and excessive current.
Specifications:
| Model | HX-3S-FL25A-A |
| Battery Type | 3S 18650 Lithium-ion (Li-ion) |
| Nominal Voltage | 11.1V |
| Maximum Voltage | 12.6V (4.2V per cell) |
| Minimum Voltage | 9.0V (3.0V per cell) |
| Continuous Discharge Current | 25A |
| Charging Current | 5A |
| Balancing Current | 100mA (per cell) |
| Overcharge Protection | Yes (Over 4.2V per cell) |
| Overdischarge Protection | Yes (Under 3.0V per cell) |
| Short Circuit Protection | Yes |
| Overcurrent Protection | Yes |
| Self-Consumption | < 40uA |
| Temperature Range | -20°C to 60°C |
| Size | 60mm x 45mm x 5mm |
| Weight | 30g |
Key Features:
- Cell Balancing: Ensures that all three cells in the series are balanced for safe and efficient operation.
- Overcharge & Overdischarge Protection: Protects the cells from excessive voltage (over 4.2V) and deep discharge (below 3.0V).
- Overcurrent & Short Circuit Protection: Automatically cuts off the load if there is excessive current or a short circuit, ensuring safety.
- Current Capacity: Supports up to 25A continuous discharge current, making it suitable for high-power applications.
- Temperature Protection: Prevents damage by monitoring the temperature and shutting down if temperatures exceed safe limits.
- Compact Design: The module is compact and easy to integrate into a variety of applications, saving space while providing reliable protection.
Applications:
- Electric Vehicles (EVs) – Perfect for e-bikes, e-scooters, and other electric vehicles.
- Power Banks – Ideal for DIY power bank projects where multiple cells need to be connected for higher capacity.
- Solar Energy Systems – Used in solar battery storage systems to ensure safe charging and discharging.
- RC Cars & Drones – Can be integrated into RC vehicles or drones for reliable power management.
- Portable Devices – Suitable for portable devices requiring 11.1V battery power.





