You will want to get a soft starter on each of those AC units. One main reason I went with 4 Powerwalls was to make sure I can start my 2 AC units at the same time in the event of an outage. Even with the four Powerwalls, I decided to install a soft start on each of my AC units outside. Soft starters will dramatically reduce the in rush surge amperage when the compressor starts. My large unit has a rated LRA of 109 amps, but with the soft starter, it usually draws in the low 30's.
Micro-Air Easy Start 368 Soft Starter for Residential Home & Commercial use come in two different sizes, for 48,000 BTU and 72,000 BTU AC
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I have two of the X48 units.