I'm no solar expert. But it is possible to run A/C off batteries.
The cost is still relatively high but it is doable.
It will require 4-6 Lipo batteries for starters.
You then need a means to recharge those batteries which means covering your entire roof with solar panels.
While in general price are dropping I priced a ac capable system at $6000.00 grand or so for a DIY install. Keep in mind a genset can be had for less than a grand! Also know a built in Onan 5550 genset is a 7000.00 factory option for units that have the built in option availabe.
As to just installing batteries with no solar panels it is certainly doable.
Only the end user can decide if it is practical. But if one night gets you through it maybe something to consider? Recharging batteries via genset instead of solar defeats the purpose of having expensive batteries if your going to run genset anyway. However if the no solar panel set up meets your needs it is doable.
