I have a six-year old Rad Rover 4 with a declining battery. I'd like to replace it with a rack-mounted LiFePO4 battery (40V 20Ah) for safety and range reasons. Would I need to change any of the electronics, since the LiFePO4 discharge curve is much flatter compared to the original NMC battery? Specifically, how do I track the remaining range/state of charge?
spokewrench
Well-Known Member
- Region
- USA
I don't know, but I'm interested.
Would the new battery be a lot heavier than the old? I've read that LiFe PO4 weighs more per watt-hour than other lithium-ion batteries.
Top speed of a PM motor depends on voltage. If your hub motor was designed to top out at 20 mph on 48 volts, it might make under 17 mph on 40 volts.
Simple digital volt meters are small and cheap. Checking voltage is one way to estimate remaining charge.
Would the new battery be a lot heavier than the old? I've read that LiFe PO4 weighs more per watt-hour than other lithium-ion batteries.
Top speed of a PM motor depends on voltage. If your hub motor was designed to top out at 20 mph on 48 volts, it might make under 17 mph on 40 volts.
Simple digital volt meters are small and cheap. Checking voltage is one way to estimate remaining charge.
Similar threads
