My truck has a built in 400 watt inverter. Will the 550 watt charger operate on 400 watts properly?

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My truck has a built in 400 watt inverter. Will the 550 watt charger operate on 400 watts properly? Not expecting it to charge as fast as 550 watt just wondering if possible. Would like to be prepared for power outages and wondering if I need to have a 210 watt charger as well which I’m sure that will operate properly for sure.
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Brock sherwood

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Posted 4 weeks ago

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Blue Angel, Champion

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Official Response
I have measured the power consumption of the rapid charger at more than 500W, so I doubt a 400W inverter would power it unless it's under-rated.  For sure the 210W standard charger would work.  You might even get away with running two?