MPPT controller recommendations
I purchased four of these 100 watt panels from Home Depot. https://www.homedepot.com/p/Grape-Solar-100-Watt-Polycrystalline-Solar-Panel-for-RV-s-Boats-and-12-Volt-Systems-GS-Star-100W/204211365 I fi...
Forum Discussion
Each panel can do about 6.2 amps in direct sun but yours will be flat so get less. Even at max you get 25 amps, so a 30 amp controller is enough, allowing the necessary margin for cold temps.
MPPT is not going to do much better, if any better than PWM for your array. BTDT measured it. So you could have picked up that 40 amp Grape controller while you were at it. Some forum members have that controller and are pleased with them. You would put all four in parallel in that case, but no big deal.
MPPT is not going to do much better, if any better than PWM for your array. BTDT measured it. So you could have picked up that 40 amp Grape controller while you were at it. Some forum members have that controller and are pleased with them. You would put all four in parallel in that case, but no big deal.
