There are 450Voc charge controllers but mainly in hybrid inverter/controller units. Growatt has a 250VDC open circuit charge controller (if you can find it for sale!) in 48V nominal. All are very cheap and not many approved for use in Canada and USA. The SRNE brand hybrid is compliant with Canadian Code, CSA/ETL and UL listed, cheap, available online in 48V LiFePO4, and stackable.
Very interesting, im surprised there isn't a built in way to step down a voltage that is too high for the charge controller
There are 450Voc charge controllers but mainly in hybrid inverter/controller units. Growatt has a 250VDC open circuit charge controller (if you can find it for sale!) in 48V nominal. All are very cheap and not many approved for use in Canada and USA. The SRNE brand hybrid is compliant with Canadian Code, CSA/ETL and UL listed, cheap, available online in 48V LiFePO4, and stackable.
add 50 foot of wire it will give you a voltage drop