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
Don't forget heat with 12v panels, it can get hot enough that having the extra cells/mppt let's the panel operate at higher power. Clouds as I measured 120F/50C (31C ambient), I'm sure the back of the panel was hotter in sun.
Grape 40A BT PWM controller $55
https://www.homedepot.com/p/Grape-Solar-40-Amp-PWM-Solar-Charge-Controller-with-Bluetooth-GS-PWM-40BT/207100856
was able to change boost and float voltages, had difficulty changing them back, will take some testing to figure out what works 100% of the time.
Grape 40A BT PWM controller $55
https://www.homedepot.com/p/Grape-Solar-40-Amp-PWM-Solar-Charge-Controller-with-Bluetooth-GS-PWM-40BT/207100856
was able to change boost and float voltages, had difficulty changing them back, will take some testing to figure out what works 100% of the time.
