Thor Forums

[Chance]

Originally Posted by Long & Winding road

.....cut.....

Thats why I would go with 200 to 300 watts for just two batteries (200 amp hour total .... 50% = 100 amh useable) to max maximize charging and offset cloudy days, winter sun.... etc.

If you go with 300 Watts (rated capacity) of panels, then you’d expect about 900 Watt-hours per day. That’s only 75 Amp-hours for a 12-Volt system. If using batteries a lot, you’d run a little short each day.

The question is whether you’d want to have excess battery or solar capacity, given a limited budget. I’d probably invest more on batteries if I couldn’t get it balanced just right.