Sahnova Solar
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| Model NO. | LWS-4S25A-732-R01 | Over Current Protection | Yes |
| Balance Function | Yes | Usage | Lithium Battery Packs, LiFePO4 etc |
| Application | Digital Equipment, Ebike, Solar, etc | Metal Coating | Copper |
| Layers | Multilayer | Base Material | Fr-4 |
| Certification | RS485, CAN, Bluetooth, CE, RoHs | Specification | L55*W22*T4mm |
This 4S 20A LiFePO4 battery protection solution supports a stable load with continuous current up to 20A, ideal for 4-cell series battery packs.
| Voltage | 12V |
| Type | BMS Pcb board |
| Communication | RS485, Bluetooth, RS232, CAN |
| Application | Solar, EV, E-bike, Portable Devices |
| Item | Test Description | Criterion |
|---|---|---|
| Voltage | Charging voltage / Balance voltage | DC:14.4V CC/CV | 3.725±0.025V |
| Current | Max continuous Charge/Discharge | ≤20A |
| Overcharge | Detection / Release voltage | 3.85±0.025V / 3.75±0.05V |
| Over-discharge | Detection / Release voltage | 2.3±0.08V / 2.5±0.1V |
| Short Circuit | Detection delay / Release | 200-500us / Cut load or activation |
| Temperature | Operating Range | -20 ~ +60ºC |
Specializing in Battery PCM & BMS for Lithium ion, LiFePo4, and LTO battery packs since 2013. We have designed over 900 types of hardware and software BMS solutions, including HDQ, I2C, SMBUS, RS485, RS232, and Bluetooth protocols.
Our products cover 1S-35S configurations with working currents up to 350A, widely used in power tools, electric bicycles, medical equipment, and EV applications. We hold ISO 9001(2015) certification and focus on delivering high-quality, reliable protection systems.
