Mini Split Air Conditioner / Heat pump

I've come to the conclusion that nobody here knows anything about minisplit air conditioners vs the regular stand topside airconditioner that come stand with a RV.

Thank you all for your input

All I can say is Okay at this moment

Walkdog wrote:
https://www.homedepot.com/p/DuctlessAire-Energy-Star-12-000-BTU-1-Ton-Ductless-Mini-Split-Air-Conditioner-and-Heat-Pump-Variable-Speed-Inverter-220V-60Hz-DA1221-H2/300696598

4amp it says i assume that is a hour. Of course the one i'm acctually looking at is aroud 10-15. 10amp hours is 16 hour day is 160 amp hours in a 16 hour period. Right? Am i wrong. If so please put me back into place. So i should be able to run at least my air and pc and a 32 inch with direct tv attached and what not for a good while

Amperes are already a rate; saying amperes per hour doesn't make much sense. An ampere flowing for an hour is an ampere-hour or amp hour for short, and is a unit of charge. (If it were fluids we were talking about, an ampere might be equivalent to a gallon per minute, and an ampere-hour to a gallon-per-minute hour, which would of course work out to sixty gallons. It wouldn't make much sense to talk of a pump providing 5 gpm per hour, though.)

You do need to take voltage into account for these computations. I think it's less confusing to think in terms of energy (watt-hours or kilowatt-hours) rather than charge (amp-hours) as energy usage is really what you're studying and so the voltages etc. will "automatically" work out.

4A at 220V is 880W, so running for an hour would be about 880 Wh. One amp at 12V is 12 Wh and a 200 Ah 12V battery setup would contain 2400 Wh. So, in theory, this battery bank would run the air conditioner for something like 2-3 hours.

In practice, the power consumption of the air conditioner is not going to be constant (one of the ways that mini-splits get their efficiency is by adjusting the speed of the compressor and fans to meet the demands), and the usable battery capacity varies with the rate of power usage, and there are conversion inefficiencies in inverting the 12V to 220V, and so on. The math is at best only useful for a rough back-of-the-envelope estimate of what might be possible.

To summarize: 4A over 1 hour is, by definition, 4 Ah, but this is not a very useful number without the voltage also being specified simultaneously.

Walkdog wrote:
Apparently so many people do not understand lithium battery, it charges very very fast and can run down to almost 0. Lithium is high dollar at the moment, but worth it in the long run vs regular batteries

oh i think most of us Do understand
recharge speed is not the big concern in this case
because this is basically a 'constant use' situation

its the total amount of power involved, that has to be created/replaced
given the 10amp number 'you stated' my math is correct

the question is what is the duty cycle involved?
in really hot weather it is 100%, comes on stays on
so my numbers are accurate

the panels have to replace the night time use while still creating enough power to run the a/c during the day

No generator

Still overall goal is to do anything I want to do without being hooked up.

I plan on moving away from my house in pasture at first and do nothing but shuttle a lil water over and dump the grey water on garden. Work from there to travel further and do another test and see how it comes out.

Apparently so many people do not undertand lithium battery, it charges very very fast and can run down to almost 0. Lithium is high dollar at the moment, but worth it in the long run vs regular batteries

I will have solar enough to charge the banks or bank back.