Quote from: mikeywith on Today at 04:42:09 PM

Quote from: philipma1957 on Today at 01:35:55 AM

so 600 watt panel x 5 = 3000 watts of charge

or 600 watt panel x 6 = 3600 watts of charge

Please read my post again where I explain about the total capicity of the batteries, he can not store 3kw in 2*100ah, a battery can only store volt*amps so 12v*100A = 1200w MAX per battery, and that is not even always possible, charging the last 10% takes forever and the battery ages it becomes impossible to hold 100%.

But eitherway the best case scenario is 1200w per battery so 2400w for his 2*100ah batteries even if he uses a billion solar panels.

Also the inverter loss is not everything, there is still charging loss and transmission loss, unless you use the highest quality of everything it is safe to assume a 20% in the whole system.

you are correct. so he needs 3 batteries.

I know a guy that had a deal with a golf cart dealer. He would get scrap dead golf cart batteries and refurbish them.

Basically this battery was one he could get at a 90% discount

https://www.batteryequivalents.com/group-gc12-batteries.html

https://www.batteriesplus.com/product-details/golf-~-scrubber/battery/magna-power/sligc12vt

they run 330usd new. the dead ones can be refurbished but they may have 1 cell missing so they are 10 volt not 12 volt.

he would string 5 of them to get to 50 volts and 150ah about 50 x 150 = 7500 watts. and run them done to 3500 watts then recharge.

even at 80-90 percent off they are about 50-60 bucks apiece say 300 usd and refurbing them is about 50 more. so 350 .

They don't last long since they are old and died once.

Battery solar is a hard road to do.

We are Grid tied here in NJ much cheaper to do.