10S 36V 30A BMS – Complete protection for your electric scooter or moped battery
When it comes to electric vehicle batteries, there is no room for error. An overcharged cell, an unprotected short circuit, or a voltage imbalance between cells can destroy a battery pack worth hundreds of euros. This 10S 36V 30A BMS module is designed to prevent exactly that. It monitors every individual cell, cuts power in a fraction of a second during faults, and balances the pack during every charging cycle.
Note: This BMS uses a split-port connection — the charging (C-) and discharging (P-) terminals are separate. Please verify your circuit topology before installation.
Why choose this model? (Key Advantages):
- Triple Protection in One Module — Includes overcharge protection at 4.25V/cell, deep discharge protection at 2.6V/cell, and short-circuit protection, with no extra components required.
- 40A Peak Current — Supports the sudden power demands of electric motors up to 1000W, where current can spike to 35-40A during initial acceleration.
- 4.2V Cell Balancing — Equalises cells during every charge, significantly extending the lifespan of your battery pack compared to unprotected circuits.
- Compact 64×35×9 mm Design — Fits easily into standard battery housings for scooters and mopeds where space is at a premium.
- Split-Port Connection — Separate C- and P- terminals allow for simultaneous charging and discharging, ideal for applications with energy recovery or charging while in use.
Performance and Specifications
This module manages a pack of 10 Li-Ion cells in series, providing a 36V nominal voltage and 42V at full charge. It offers a continuous discharge current of 25A—perfect for 900W motors under normal operation—while the 40A peak current handles heavy start-ups without triggering false protection. The passive balancing activates automatically at 4.2V per cell, preventing the imbalances that degrade battery capacity over time.
| Parameter | Detail |
|---|---|
| Model / Configuration | 10S – Split-port connection |
| Nominal Voltage | 36V (max. 42V at full charge) |
| Max Supported Power | 1000W |
| Cell Compatibility | Li-Ion 3.7V – Ternary, Cobalt Oxide, Manganese |
| Overcharge Protection | 4.25V / cell |
| Discharge Protection | 2.6V / cell |
| Balancing Voltage | 4.2V / cell |
| Continuous Discharge Current | 25A |
| Peak Discharge Current (max.) | 40A |
| Charging Current | 10A |
| Integrated Protections | Overcharge, deep discharge, overcurrent, short-circuit |
| Dimensions | 64 mm × 35 mm × 9 mm |
| Weight | 60 g |
| Recommended Applications | Electric scooters, mopeds, electric vehicles, inverters |
Connection and Usage Instructions
- Balance Leads: Connect each wire to the corresponding cell terminal in ascending order—B0 to the total negative, B1…B10 to the positive of each cell.
- B- Terminal: Solder and secure firmly to the negative pole of the battery pack.
- Discharge Cable: Connect P- to the negative pole of the load (motor, inverter) and B+ to the positive pole of the battery.
- Charging Interface: Connect C- to the negative pole of the charger and B+ to the positive. Insulate all unused wires to prevent accidental short circuits.
Package Contents
- 1x 10S 36V 30A BMS Board with split-port connection
Frequently Asked Questions
Is this compatible with LiFePO4 cells?
No. This module is calibrated specifically for 3.7V Li-Ion cells (NMC, ternary, cobalt). LiFePO4 cells have a 3.2V nominal and 3.65V maximum voltage, which are incompatible with this BMS.
What does a split-port connection mean?
The charging port (C-) and discharging port (P-) are physically separate. This allows you to charge and discharge simultaneously, with the BMS independently controlling the current on each channel.
Will this work with a 500W 36V motor?
Yes, absolutely. A 500W 36V motor typically draws about 14A under normal conditions and up to 28-30A during start-up—well within the limits of this module’s 25A continuous and 40A peak rating.
How do I know if the BMS has triggered protection?
The load will receive no power even though the battery is charged. Disconnect the load, check your wiring, and reconnect. If the issue persists, measure the individual voltage of each cell; a reading below 2.6V indicates the pack requires balancing or cell replacement.
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