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I understand it's not about the daylight hours. These are the profiles for site, it's one of the sunniest places on earth. They're much closer to here than Perth I've identified the upper limit as 60W and anything higher will give me a run flat in the dead of winter before the monthly...

Thanks, this is helpful. I advanced it a lot further yesterday and consulted a couple of other experts about insolation and have made some improvements, mainly vastly reducing peak solar radiation hours. It is extremely sunny where it is, Newman Western Australia, so they see min 6h ish in...

Hi all, I'm reasonably confident that some of this is right but I'm not sure if I have applied efficiencies in the right places, I was wondering if someone that is pretty good on both excel and their solar calcs can have a look at this for me. It's a small system: 4 x 160A/H 12V Batteries A...

Hey, thanks for the replies. From what I have read, there are efficiencies tied up with batteries, they're not always stated on datasheets etc. Sometimes they are. I've found information scattered about the internet in regard to the efficiency of AGM batteries and it is typically understood to...