Lanxin controller LVC mod

[pzpoe]

I got a 24V 250W kit that I'm trying to put on my daughter's bike. I'm trying to get away with using my Ryobi 18V batteries as I have a lot of them and I know they have a pretty good BMS to handle the LVC. I'm trying to disable, or at least lower the LVC of the controller so that I'm not in limp mode on a full battery. The controller is a Lanxin LK-08 and I haven't been able to find anything similar to it in other threads. Could someone please take a look and help me figure out which resistor I need to bypass for the LVC?

Thanks

 

[amberwolf]

That's a brushed controller, based on the LM339 quad comparator chip. If you look up motor controller schematics based on the 339, you can use them to help you trace out what parts of the circuit of *this* controller are doing what, for the bits connected to the FETs and the chip.

Then you can see what else is left, and drawing them up may show you what they do.