Bafang Ultra M620/G510 60V CANBUS Controller Guide: 28A vs 40A Explained
Running a 60V system on a Bafang Ultra? Two new OEM options are available: a 28A and a 40A CAN controller. This guide to the Bafang Ultra M620 60V CANBUS controller lineup explains how they differ and which one fits your build.
The two new OEM 60V CANBUS controllers
Both are brand-new, genuine OEM Bafang controllers for the M620/G510 mid-drive, built for 16S lithium packs (60V nominal, 67.2V full charge).
| Controller | Voltage | Current | Nominal power |
|---|---|---|---|
| OEM 60V 28A CANBUS | 60V | 28A | ~1700W |
| OEM 60V 40A CANBUS | 60V | 40A | ~2500W |
28A vs 40A: who needs the extra headroom
The 28A controller suits riders on a 60V system who need a repair part or want to restore a build to full OEM performance. The 40A controller is the highest-power CANBUS option in the range, aimed at high-output 60V builds and at upgrading from a lower-amperage controller. Because it is a high-amperage part, confirm that your motor windings and wiring harness are rated for 40A before installing.
How they compare to the 48V and 52V options
HPC also carries a 52V 30A CANBUS controller (about 1000W). The 60V units are for 16S packs and are not compatible with 13S (48V) or 14S (52V) batteries, so match the controller to your battery first.
Confirm fitment before ordering
- Check that your motor uses the CAN protocol. CAN and UART controllers are not interchangeable.
- Confirm your battery is 16S (67.2V full charge).
- For the 40A version, confirm windings and harness are rated for 40A.
- Plan to sync the controller to your motor after installation using Bafang's BESST software.
Conclusion: choosing your Bafang Ultra 60V CANBUS controller
Pick the 28A for a solid 60V replacement or restoration, and the 40A when you want the most power from the M620/G510 platform. Either way, verify protocol, voltage, and wiring first, and reach out if you want help getting the right part.
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