I'm trying to upgrade this ebike (volt canada) and the guy I bought it from said he used to do conversions from 60v to 72, just add the battery... So I checked my controller, caps and mosfets all rated well above 72v but when I hook up the new battery (yes in series, 72v on the meter) the wheel doesn't turn. I still have power because everything running off the dc-dc converter works, and I can use my meter in the controller and verify there is 72v in there in places, but I can't figure out why the bike doesn't run at all on 72v... I suspect there's either a crowbar I can't find, or else there's a software overvoltage protection I just wont be able to bypass. Anyone else have an idea why it might not be accepting the higher voltage?
The controller has no names or identifying numbers that google can find, the label says it's 60V 800W.