VECTOR: Running games off of a battery?

The question,
Has anyone ever run an arcade machine (vector or otherwise) off an 12v 
battery and an AC inverter?

The Reason
I have had 1/2 my collection in self storage for over 4 years now. The 
unit has power and lights so If I needed to, I could plug something in 
for test. BUT..... the price of rent has skyrocketed over the past 2 
years so I have moved to a different storage company. The catch is, no 
lights no power. So I was wondering if an inverter, a car battery and a 
solar charger to refresh the battery was a way to add occasional testing 
and a 100 bulb over my head..... Or do games no like square wave AC?