BFL13 wrote:
Niner, you keep on using "amps" to be short for "amp hours" which is very confusing. You know better than that. :(
On daily hauls, I did a measuring trial (where I had to keep loads running all day so the amps didn't taper as battery SOC rose) using my Trimetric for the AH count.
May, sunny all day each trial, 49.3N, 130w panel got 8.2 Isc as rated panel aimed at high sun.
Flat- 56AH, Tilted up facing South all day- 70AH, Tilted up and turned toward sun three times a day SE, S, SW- 90AH
Of course you can't get that many AH when charging batteries because the batteries make the amps taper later in the day. But you can run loads and capture those amps and so get your AH haul if needed.
Exactly. Run additional loads once your battery is getting near 90% charged, and you'll harvest additional amps for free, that were being wasted as the battery nears top charge.
I own a 3 season travel trailer, and live 34N, so winter time... I might be a little hard pressed come Christmas time and short days with long nights,to get all the amps I need with just solar. No worries, that's what the Mega Watt 30 amp charger (hey, it doesn't say anything about hours) is for first thing in the morning, come winter time, if I get out there.
Batteries are amp-hour rated, I don't think solar panels and charging devices are. :h