Programming the Motorcontroller of the Hisun E1

[Jau]

As we converted a Hisun E1 to a 560Ah 48V battery pack we would like to change some settings of the motor controller.

Unfortunately there is no schematic out there that shows if the programming pins of the Curtis controller are connected to a connector of the UTV?

Does anybody has experience with connecting to the Motor driver? A Curtis programming cable with software is available.

[GNFO]

On 7/10/2025 at 7:34 AM, Jau said:

As we converted a Hisun E1 to a 560Ah 48V battery pack we would like to change some settings of the motor controller.

Unfortunately there is no schematic out there that shows if the programming pins of the Curtis controller are connected to a connector of the UTV?

Does anybody has experience with connecting to the Motor driver? A Curtis programming cable with software is available.

I'm afraid I can't help, but I am curious.  Did Hisun change the motor controller over to Curtis? I've only seen reference to Sevcon.  Also, what kind of pack did you install that gives you 560Ah? That's absolutely huge, and perhaps a bit of overkill unless you plan on it going out into the wilderness for a few days without charging.

[Jau]

Hmm, regarding the controller I'm not so sure anymore, I need to check again not that it actually is a Sevon controller and I have that wrong in my memory.

Its two custom boxes with 315Ah cells each. So it actually is a 630Ah pack. The friend I built for wanted maximum security because of range anxiety. It is used for hunting so i guess they never drive more than 100km at one day/charge.

[GNFO]

29 minutes ago, Jau said:

Hmm, regarding the controller I'm not so sure anymore, I need to check again not that it actually is a Sevon controller and I have that wrong in my memory.

Its two custom boxes with 315Ah cells each. So it actually is a 630Ah pack. The friend I built for wanted maximum security because of range anxiety. It is used for hunting so i guess they never drive more than 100km at one day/charge.

OK, thanks.  That's pretty neat and that's about the only use case I can think of to need that kind of capacity.  On this forum the only one I know of who has gotten into the technical details of the motor controller is @EVSupport. I believe they are in the UK and have done custom lithium pack conversions, including Sevcon programming, before off-the-shelf GC2 form factor batteries became available like I used.  

[Jau]

I disassembled the vehicle today again to confirm the type of the Controller.

It seems to be a controller from Tercel with the Type TEVD1-07M45F3-000-158. Is that a rebranded Sevcon controller or a totally different model?

@EVSupport Did you ever see that controller in the E1? Is it compatible with the Sevcon software or is is different?

[GNFO]

41 minutes ago, Jau said:

I disassembled the vehicle today again to confirm the type of the Controller.

It seems to be a controller from Tercel with the Type TEVD1-07M45F3-000-158. Is that a rebranded Sevcon controller or a totally different model?

@EVSupport Did you ever see that controller in the E1? Is it compatible with the Sevcon software or is is different?

I defer to EVSupport, but that doesn't even remotely look like what's in mine (a 2020 model).

[EVSupport]

These are the latest E1s they have this chinese controller, and a different Chinese charger. Its not a rebranded Sevcon, and the software isnt available. Even the UK importers have to use a chinese language version and have limited ability to do anything.