DALY LifePo4 Battery Charger Protection Module (BMS) 20S 60A 60V
The DALY 20S 60A 60V LiFePO4 Battery Management System (BMS) is a professional battery protection module developed for 60V lithium iron phosphate battery packs consisting of twenty cells connected in series. It continuously monitors individual cell voltages, charging and discharging currents, and battery temperature to ensure safe battery operation under various load conditions. The integrated protection circuitry helps prevent battery damage caused by overcharging, over-discharging, overcurrent events, and short circuits.
Designed for demanding energy storage and electric mobility applications, this BMS features an automatic balancing function that maintains uniform voltage levels across all cells. Proper cell balancing improves battery efficiency, increases usable capacity, extends battery lifespan, and enhances overall system reliability. Its durable waterproof construction makes it suitable for both indoor and outdoor battery installations.
Features:
- Designed for 20-cell LiFePO4 battery packs.
- Integrated cell balancing function.
- Overcharge protection.
- Over-discharge protection.
- Overcurrent protection.
- Short-circuit protection.
- Temperature monitoring support.
- Automatic fault recovery.
- Waterproof construction.
- High reliability and long operational life.
- Improves battery efficiency and longevity.
- Suitable for high-power battery systems.
- Compact and durable design.
Specifications:
| Parameter | Value |
|---|---|
| Brand | DALY |
| Model | J24K3 |
| Battery Type | LiFePO₄ (Lithium Iron Phosphate) |
| Cell Configuration | 20S (20 cells in series) |
| Nominal Voltage | 64 V |
| Maximum Charge Voltage | 73.5 V |
| Continuous Charge Current | 60 A |
| Continuous Discharge Current | 60 A |
| Overcharge Protection | Yes |
| Over‑Discharge Protection | Yes |
| Short Circuit Protection | Yes |
| Waterproof Rating | IP67 |
| Temperature Range | –20°C to 60°C |
Pinout:

Main Power Connections
| Terminal | Function |
|---|---|
| B- | Battery Pack Negative |
| P- | Charge/Discharge Negative |
| B1 | Cell 1 Positive |
| B2 | Cell 2 Positive |
| B3 | Cell 3 Positive |
| B4 | Cell 4 Positive |
| B5 | Cell 5 Positive |
| B6 | Cell 6 Positive |
| B7 | Cell 7 Positive |
| B8 | Cell 8 Positive |
| B9 | Cell 9 Positive |
| B10 | Cell 10 Positive |
| B11 | Cell 11 Positive |
| B12 | Cell 12 Positive |
| B13 | Cell 13 Positive |
| B14 | Cell 14 Positive |
| B15 | Cell 15 Positive |
| B16 | Cell 16 Positive |
| B17 | Cell 17 Positive |
| B18 | Cell 18 Positive |
| B19 | Cell 19 Positive |
| B20 (B+) | Battery Pack Positive |
| P+ | Common Positive Terminal |
Applications:
- LiFePO4 battery packs.
- Electric bicycles.
- Electric scooters.
- Electric motorcycles.
- Electric vehicles.
- Solar energy storage systems.
- Portable power stations.
- UPS backup systems.
- Marine battery systems.
- Industrial battery packs.
- Robotics and automation systems.
- RV and camper power systems.
- Off-grid energy storage solutions.
- Electric utility vehicles.
Package Included:
- 1 × DALY 20S 60A LiFePO4 Battery Management System.
- 1 × NTC Temperature Sensor.
- 2 × Balance Wire Harness.
- 2 x Screws.
- 2x Pre-Terminated battery link cable.




