Quote:
Originally Posted by prydey
Battery is 100Ah. Panel is advertised as 200w, but probably closer to 160, according to people much smarter than me concerning those things.
It kept up with demand on the weekend. The only means of battery monitoring I have is a volt meter that plugs in to a 12v socket. These are only really accurate if your battery has been at rest for a few hours apparently, but whilst the panel is charging, that will read 14v. The regulator (I only have cheap pwm, not mppt) switches to float at 13.7, so most of the time the battery was full.
Panel doesn't need sun. They just need light, so even on a cloudy day they will still produce some power. Fixed panels have that downside (being fixed) but it's much less hassle for me and one less thing to carry and set up...
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Fair enough, I've got 160w panels and the most I've seen from them on a good day was about 110w so 160w from your 200's is probably on the money, should do the job no problems at all.
Last year we had a wet day up there and on my 130ah with two fridges and lights/chargers going over night I got down a bit and was only getting around 40w back in at best, still got back to near full but took most of the day.
Also, for any SA people watching, just thought I'd mention, there's a Carp fishing comp in Barmera on the last weekend in March with good prizes for different categories if anyone's interested.