I've done quite a bit of reading on solar power for WISP projects. I was wondering if anyone here is running solar, what they've got running off of it and how long it lasts.
I think the info I have is based on a completely different climate than we have.
The highest power usage I have today is 27W, it may hit 50W before summer. I was intending on using a pair of Optima yellow top batteries in series with an 85W solar panel.
Just curious how other people are doing this. It is around an $800 test project for a small business, so I'd rather get it right the first time.
I'm at 44N latitude, not sure about you.
You're gonna need about 300+ w of solar power and 500+ AH of deep cycle battery for 27w minimum
. That sort of load is a $2000 parts project not a $800 project budget. Double that budget for 50w.
Any 85 watt panel and 2 car batteries is trouble free for about a 3 watt load based on my experience.
50w = about 4 AH or about 100 AH per day. 1000 AH of battery would go for 5 days without going below 50% charge. It's not uncommon to have 5-10 days or rain/fog/dreary weather unless you live in a desert or something. Going below 50% charge frequently will wear out your batteries fast. You'd also need about 200AH per day to provide 100AH of load and 100AH of charging. In the winter, we get a sum of about 4 hours of charging per day, meaning we'd need 50A of charging current to meet our quota in 4 hours. 50A means about 600W of solar power. In this case, I'd prefer 2000AH of battery for 10 days runtime rather than 5 days.
Best solution is to choose products that have low current draws. ubnt and mikrotik are pretty capable when carefully chosen.