[frankus]

If you're remotely interested in this sort of thing, definitely check out the VESC project (https://vesc-project.com), which is kind of the secret sauce that makes this sort of thing accessible to mere mortals.

There are a lot of hardware variants at different price and quality points but it's a great, hackable, open-source (GPL3) motor controller for smallish motors (in the 24-44 volt range—they typically use a gate drive/power supply controller with a 60V limit).

[AYBABTME]

Do you mean 24-48? 44V is pretty odd, and I assume 48V means <60V?

[frankus]

I don't really know if there's a firm consensus as to the official nominal voltage of a lithium ion cell, but I was going off of 10 cells (in series, aka "10S") being considered a 36V system (that gets up to ~42V when fully charged).

12S seems to be considered the highest voltage that the original VESC can reliably handle, which works out to 43.2V at 3.6V per cell.