I don’t think there’s any question that I’ll get the unit; there are too many user reviews on Amazon to make me think it’s a complete rugpull (although I did notice that fulfilment does not seem to be via Prime).
The real question is how it behaves once I’ve got it on hand, and there really are questions to answer there. I know for a fact the Anker Solix units match their specified watt-hour ratings, because I ran them dead flat to check. I know their sine wave output looks good and the handover is clean, because I made them do it repeatedly while watching over an oscilloscope. Those are some of the things we still need to see out of the Goldenmate unit.
There are also questions about heat and fan noise. I saw that the units do have cooling fans in them; it’s acceptable to me if those kick on while the units are switched for battery output, but NOT if they’re passing through power.
There is some potential for chicanery there, too: I tested a Bluetti powerbank/UPS similar to the Anker Solix ones, and I saw that they spin up the fans every hour for a couple minutes if there’s anything plugged into their 120VAC out. This strikes me as, in addition to annoying as hell, likely evidence that they might not BE switching the outputs when the power goes out… they might (I have not actually disassembled one to try to look at circuitry) just be running the 120VAC out off the battery ALL the time, and simul-charging while doing so.
The Anker Solix, by contrast, doesn’t ever spin the fans up unless it’s either charging at 200+W, or discharging at 200+W without shore power available.
Like I said. Plenty to test. 