it would be nice if a reputable solar company could make an mppt controller that takes 150v and can charge up 12-48 and sell it for 100$.
Rover 40 amp MPPT Manual; PV Overcurrent The controller will limit the battery charging current to the maximum battery current rating. Therefore, an over-sized solar array will not operate at peak power
Rover 40 Amp MPPT ManualMax. Solar Input Power"...24V @ 1040W"
2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 460 Ah. 24 volt LiFePo4 battery bank. Plenty of Baja Sea of Cortez sunshine.
https://www.amazon.com/SmartSolar-MPPT-100-Charge-Controller/dp/B075NTT8GH?th=1I wonder if you could get into the 75v 15 amp version and increase its amp rating...