Ampinvt FT50248-US 5000W 48V 120/240V split-phase low-frequency inverter charger
Two Died Within Months
Two of these units ended up failing on me. BOth lived very easy lives in my camper powering pretty low-load electronics. The first unit would power on, say "Output Short", then power right off. Thankfully, Amazon shipped a replacement. The second unit lasted long enough to go outside the Amazon return policy. I reached out to AmpInvt customer support for warranty claim via the warranty registration on their site. They took over two months to reply. When they did they stated this (actual quote): "Can inverter power a small load now? If can't, Plz disconnect all power and loads for a while, unscrew the screw, then open inverter case to check inside boards and firmware any damage, take photos, plz also take photos of inverter case lable." After I said I wasn't comfortable with that and that I just want a replacement unit, they replied with: "Disconnect all power sources and loads, and allow the unit to discharge completely. Then, open the chassis to inspect for damage and take photographs. We can provide replacements for any damaged components while the unit is under warranty." I reached out to Amazon customer support on the off chance they'd help, despite being outside the return window. They ended up allowing me to return it and get a full refund. The largest loads would have been a camper air conditioner, a camper fridge, and a camper microwave. It never saw even half its rated load. These units are trash. Don't bother.
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