newbie battery and electrical question

booster wrote:
The roof AC has to be 10 amps at 120 volts. Ask Roadtrek how long they can run the AC in the e-trek. They have 800AH of 12v battery power, and despite initial big claims, now most are saying they can run air maybe 4-5 hours. They also have solar and a 3500+ watt engine generator.

You don't need to have the engine power changed to AC, and then back again to charge the batteries, it will do it directly, and if you want to get the good 3 step charging, you can get a 12v to 12v multistep charger from folks like Sterling.

The frig will probably use in the range of 30 to 60 AH per day, so if you want to stay in the 50% discharge range, it alone would get you to charge point in two days.

Personally, I would chose a Sterling charger over the Powermax, but Powermax isn't bad either.

i misread, you are right, roof ac is 10amp 120v.
if i get a 12v to 12v charger, will it be able to draw from a 110v to 12v converter so that i can charge my battery when connected to shore power?

i am new to the whole rv thing so realizing AC draws that much power is a little surprising to me, what do people usually do when dry camping in hotter climates? large enough battery bank would be cost-prohibitive, that leaves generator the only option?
what about place like national parks where you are not allowed to run generator during the night?

i had this really miserable experience when i was in florida last summer sleeping in my passat wagon at everglades, ended up idling the engine all night, luckily there weren't anyone else so we weren't bothering anyone with noise or exhaust.

because i want AC in the new camper badly, but now i am a little lost.
i did find a portable AC that only draws around 4.5amp(110v), so maybe run that for 5 hours with 2 220ah battery?