Quote:
Originally Posted by Chance
Aims inverters are rated up to 3X instantaneous power, which means it can supply up to 9,000 watts for a few seconds to start the A/C. However, just do the math and see how many Amps it takes to produce 9,000 Watts at 12 Volts. Fortunately, most newer A/Cs don’t need 9,000 Watts during start-up, but if inverter had to supply that much due to other loads, you’d be looking at needing close to 1,000 Amps during lock-rotor A/C start-up.
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You are forgetting what happens when you ask a deep cycle to produce 600 amps or so. The reason they are deep cycle is because they have thick plates with very little surface area as compared to dual use or starting batteries. Ask a CG-2 deep cycle to produce more than 50 amps and the voltage will drop precipitously. In my golf cart with 8 - 6 volt CG-2 deep cycle, with fully charged batteries, max acceleration is the amperage draw is 540 amps @ 42.0 volts volts (3.0 hp -2.2 kw). That figures to 10.5 volts for a battery pair. That will cause a low voltage shutdown on most inverters.
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