[MPaulHolmes]

I just went ahead and made a whole new board for the MPPT solar charger. It monitors solar voltage, solar current, battery voltage, and battery current, and "temperature" of whatever. It powers 2 contactors, and has 2 precharge relays that are good to 450vDC at 10amps. It also has onboard precharge resistors. The power section should be good to charging 400v at 300amp or so with adequate cooling. The inductor is only rated for 200amp continuous, so if you want to do the whole tesla charging thing, you'll need a slightly bigger inductor. None of this of course is at all relevant, since my array can only charge at around 5.6kW. haha. And my golf cart batteries would be none too happy charging at 300 amps, and I don't have 375v worth of 6v batteries either.