Reliable for 20S72V 60A BMS lithium battery packs (18650/21700 Li-ion/LiPo; check voltage thresholds for LiFePO4). One C-port – charging and discharging takes place on the same socket, making installation simpler and tidier.
What is it for?
- For electric bikes, scooters, go-karts, light EVs and DIY power packs.
- 20S Li-ion (nominal ~72 V, fully charged ~84 V) for systems up to60 A continuous discharge (≈ 4.3 kW class; peak according to datasheet).
Key benefits
- Common port C: fewer wires, fewer connection errors, easier diagnostics.
- All necessary protections: overload, deep discharge, overcurrent, short circuit
- Balancing: ensures more uniform cell voltage and longer acupack life.
- Stable 60 A load: enough for everyday use and steeper climbs.
How to connect (summary)
- B- → directly to the battery – terminal.
- C- → common point of the charger (-) and controller/motor (-).
- B(+)/system(+) → usually directly from the acupoint to the system (follow the diagram).
- Balancing bar (B1…B20) → connect in strict sequence to each cell node.
Specifications
- Chemistry: 20S Li-ion/LiPo
- System: class 72 V (Li-ion full 84 V).
- Max. continuous discharge: 60 A (instantaneous peak – according to the specific model sheet).
- Balancing: passive (typically 30-100 mA, depending on version).
- Contacts: contacts B-, C- (common), balancing connector.
- Operating temperature: ~-20…60 °C (refer to sticker/datasheet).
Safety and usage tips
- Use a charger with the appropriate chemistry: 20S Li-ion 84 V CC/CV.
- Strictly follow the sequence of the balancing wires – mistakes can damage the BMS or the acupoint.
- Ensure ventilation and isolation from vibration/humidity.
- If the controller requires high peak currents, choose a more A BMS.
FAQ
Can I load and drive at the same time?
Technologically, yes, it is possible.
Why is there no P- terminal?
This model has a common C-, so a separate P- is not provided – simplifying installation.
20S BMS, 72V BMS, 60A BMS, shared charge port, C- BMS, e-bike BMS, battery management system.
