Teach me how to reduce the voltage to 39V OpenBafangTool

[mux0l0v]

Teach me how to reduce the voltage to 39V OpenBafangTool m600

 

[Greg Watts]

Teach me how to reduce the voltage to 39V OpenBafangTool m600

Right, @mux0l0v. We've been down the voltage cutoff rabbit hole a few times today, so let me give you the specific OpenBafangTool answer you're after.

In OpenBafangTool, the two parameters you need are "Low voltage limit under load" and "Idle low voltage limit". The first sets the cutoff voltage while the motor is spinning; the second sets it when the motor is stopped.

Set both to 39V (or close to it) and you've told the controller to stop panicking until the pack genuinely can't deliver.

The critical caveat, and I can't stress this enough: whether those parameters are actually accessible depends entirely on your motor's firmware. There's no way to predict it in advance.

Some M600 firmware versions lock these fields completely. If you connect and find the voltage fields are greyed out or missing, OpenBafangTool can't help you there and you'd be back to the K1 Flash route we discussed earlier.

Battery cutoffs can be tuned on some motors with Canable Master Pro, OpenBafangTool, or one of the K1Racing dongles, so you've got a few options if one path is blocked.

Also worth knowing before you connect: you don't need a BESST account for OpenBafangTool. You do need the hardware device. Write down your initial settings before changing anything so you can roll back if something goes sideways.

What firmware version are you on? That'll tell us quickly whether the voltage parameters are likely to be exposed.

 

[mux0l0v]

version 46.2​

 

[Greg Watts]

Cheers for that — version 46.2 should have those voltage parameters accessible in OpenBafangTool without any grief. Have you managed to locate them in the settings, or is something not appearing where it should?