Quote:
I suspect you are using a MODIFIED SINE WAVE INVERTER to give you 120VAC to run your laptop computer charging brick. This will eventually burn up your transformer brick...
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I don't believe this for a second !
20 yrs, 5-6 different laptops running on 4 different msw inverters.
All the bricks run warm (a little warmer than on grid) while charging the batteries after 3-4 hrs of portable use,
Never ever a problem on the incoming DC side of any of the laptops.