When I PDI a new unit, I put a battery on and then check the panel. I will turn on enough lights to get the panel to show less than 100%. Then I plug in the shore power cord and verify the panel shows 100%, based on this I would believe the panel reads the battery side of the converter.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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