Powering water-air conditioner with a 12 V battery

[M7amad]

I gave a very detailed answer, but the Forum Software decided to delete it and lost it. It cost me 10 minutes of time I am not going to spend again.

Sorry about that!....but i appreciate the effort u put ! =)

[Mike90250]

instead of adding 12V batteries in parallel. if Golf Cart 6V 200ah batteries are available in your area, batteries in series are a better way to build capacity than parallel.
There is some math here - http://www.smartgauge.co.uk/batt_con.html

4 6V batteries in a 2series, 2 parallel arrangement, wired on the diagonal, is a better method that 4 parallel batteries.