Kunteng 72V Controller - configure low voltage protection?

I'm looking at this Kunteng 72V 40A BMS from BMSbattery

https://bmsbattery.com/ebike-kit/736-s12sn-72v1kw-40a-torque-simulation-sine-wave-controller-ebike-kit.html

I have a 16s (50-67V) battery, so I don't want low voltage protection to kick in at 60V (which would be a case with 72V controller).

Can this be somehow disabled or programmed or changed in hardware?

vex_zg said:

I'm looking at this Kunteng 72V 40A BMS from BMSbattery

https://bmsbattery.com/ebike-kit/736-s12sn-72v1kw-40a-torque-simulation-sine-wave-controller-ebike-kit.html

I have a 16s (50-67V) battery, so I don't want low voltage protection to kick in at 60V (which would be a case with 72V controller).

Can this be somehow disabled or programmed or changed in hardware?

Click to expand...

The only possible configurations are the ones available from the LCD -- see the manual: https://opensourceebikefirmware.bitbucket.io/Motor_controllers--BMSBattery_S06x--LCD_control_panel.html

I would say that change in hardware is not possible as the firmware measures the battery voltage but uses that value as input of different functionalities -- so if you try cheat the firmware by hacking the hardware, some features will fail and the controller in general will not work.

BUT, with OSEC (OpenSource EBike controller firmware) will be possible for developers that adjust that values, just like stancoke is developing:

thanks.

So if it's not configurable via LCD I can't configure it currently. Edit: But if I have a 72V controller (undervoltage protection 60V) and get a corresponding LCD3 screen with 60V - will then the screen superimpose the undervoltage cutoff level?

What about those XPD tools or similar, I thought kunteng controllers are configurable via some tool.

I wish I had time to contribute your opensource efforts, that's like the #1 development project I'd pick. If I had few months to spare :-/

vex_zg said:

So if it's not configurable via LCD I can't configure it currently. Edit: But if I have a 72V controller (undervoltage protection 60V) and get a corresponding LCD3 screen with 60V - will then the screen superimpose the undervoltage cutoff level?

Click to expand...

Sorry, I can't help you more. Maybe you can ask BMSBattery.

vex_zg said:

I wish I had time to contribute your opensource efforts, that's like the #1 development project I'd pick. If I had few months to spare :-/

Click to expand...

Thanks. Maybe you can check the project later

It can be set by changing resistor on board,really easy, but 50v is minimum for 72v display to work. If you still need it, post a close up photo of board near the 2 big resistors and voltage regulators and contact me, I will show you where it is.