I'm looking for advice on converting my bike to run off 72 volts. My current setup consists of a nine continents motor with a 35A controller running off a 48v 20AH LiFePO4 battery. Is the best way to get up to 72 volts to connect another 24 volt battery in series? If so, how is this done taking into account the battery management systems? Do I need to match the amp hours to my existing battery, or does that matter? Should I be concerned with the power or current being drawn damaging the batteries?
Has anyone upgraded from 48v to 72v that can share their experience?