Battery Compatibility Guide
Battery Compatibility Guide
Find the right battery for your motor system. Voltage, connector, and fitment explained.
⚠️ Why Compatibility Matters
Using an incompatible battery can result in system failure, reduced performance, permanent damage to your motor controller or battery, and safety hazards including overheating and fire risk. All four factors below must match.
The Four Compatibility Factors
Voltage
Voltage is the most critical compatibility factor. Your battery voltage must match your motor controller's rated voltage.
| Battery Voltage | Full Charge Voltage | Compatible Controller |
|---|---|---|
| 36V | 42.0V | 36V controller |
| 48V | 54.6V | 48V controller |
| 52V | 58.8V | 48V or 52V controller* |
| 60V | 67.2V | 60V controller |
| 72V | 84.0V | 72V controller |
* 52V batteries on 48V controllers: Many 48V controllers accept a 52V battery because internal components are rated for the voltage range. However, the battery indicator will not display correctly. Verify with your controller manufacturer before using this combination.
Never use a higher voltage battery than your controller is rated for. This will damage or destroy the controller.
Connector Type
Your battery's discharge connector must physically match your motor controller's input connector. Adapters add resistance and potential failure points — a direct match is always best.
| Connector | Typical Use | Notes |
|---|---|---|
| XT60 | Mid-drive & hub motors up to 60A | Yellow, very common |
| XT90 | High-power systems up to 90A | Larger, anti-spark option |
| Anderson | Modular systems, easy configuration | Color-coded, stackable |
| Barrel | Lower-power hub motor systems | Various sizes, check dimensions |
| Rosenberger | Premium European systems | Magnetic, proprietary |
Not sure what connector you have? Send us a clear photo of your controller's input connector. We can build your battery with the correct matching connector.
Continuous Discharge Current
Your battery must deliver enough current for your motor's peak demand. If the rating is too low, you will experience:
- Voltage sag under load
- Motor cutouts during acceleration or on hills
- Battery and connector overheating
- BMS over-current protection triggering
- Rapid cell degradation
How to verify:
- Find your controller's maximum current draw (in amps)
- Your battery's continuous discharge rating must equal or exceed this number
- Include a 10–20% safety margin
Example — BBSHD:
- Controller max draw: 30A
- Recommended battery rating: 35A or higher
- ✗ 20A continuous battery → Not suitable
- ✓ 35A continuous battery → Suitable
Physical Fitment
Your battery must physically fit your bike. This is the most common reason for returns — measure carefully before ordering.
Key measurements to check:
- Downtube mount: Space available, front tire clearance at full compression, shock/linkage clearance
- Triangle mount: Interior frame dimensions, bottle cage boss interference, slide-out clearance
- Rack mount: Rack weight rating, mounting hole alignment
Detailed dimensional drawings are available on each battery product page. Print the drawing and check it against your frame before ordering.
Motor System Quick Reference
This is a general reference. Always verify with your motor kit manufacturer.
| Motor System | Typical Voltage | Max Current | Common Connector | Notes |
|---|---|---|---|---|
| Bafang BBS01 | 36V | 15A | Anderson / XT60 | Low power, many battery options |
| Bafang BBS02 | 48V | 25A | Anderson / XT60 | Recommend 30A continuous battery |
| Bafang BBSHD | 48V / 52V | 30A | Anderson / XT60 | Recommend 35A+ battery |
| Bafang Ultra | 48V / 52V | 30–35A | XT60 / XT90 | High power, recommend 40A+ battery |
| Tongsheng TSDZ2 | 36V / 48V | 15–18A | Various | Low power, compact battery options |
| CYC X1 Pro | 48V / 52V | Up to 60A | XT90 | Very high power, high-discharge cells required |
| Hub 250W–500W | 36V / 48V | 15–25A | Barrel / XT60 | Lower power, most batteries work |
| Hub 1000W–3000W | 48V / 72V | 30–60A | XT90 / SB50 | High power, high-discharge cells required |
Need a Custom Connector?
If your motor system uses a connector not listed above, we can often accommodate it. Contact us with a clear photo of your controller's input connector and your motor make and model. We'll confirm whether we can build your battery with a matching connector.
Still Not Sure About Compatibility?
Send us your motor system make and model, a photo of your controller label, and a photo of your current battery connector. We'll confirm compatibility and recommend the right battery for your setup — typically within 24 hours on business days.
Email support@booant.com