Tested my new Solar Panel today
Purchased a NewPowa 150 Watt 12 volt panel on Amazon for 159.00 figuring that all the talk about raising tariffs mean prices will be going up soon. It was shipped for free and came well packaged and p...
Forum Discussion
BFL13 wrote:
Isc of 9.17 on a 150w panel is fairly low-- "normal" might be more like 9.46, so I am suspecting your panel has a higher Voc. Some panels have near 23 instead of near 22, so their Iscs are lower.
You won't see more than the Isc of the panel except briefly with occasional cloud edge effect. Or if it is really cold out. Your controller will be ok.
Count on getting less than rated Isc amps when the panel is mounted flat, like on your roof, rather than tilted and aimed at the sun as when used as a portable panel. So the controller will have even more margin.
If the PWM controller ever went over 10 amps, it would not fry right away. It takes a fair time to heat up and eventually fry.
Thank you. This makes sense and when I had the panel flat it was putting out 5.75 or so...much better when pointed directly at the Sun. This was why I thought a 10 Amp would work initially.
The battery has to go under my bed so I want an AGM and I think it will be a 120 AH model. I use very little electricity on this vehicle unless I change my fridge to a home style and think the 150 Watt will keep up with usage especially combined with the alternator when driving.
