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gbj_tester-
I'm much more inclined to believe numbers on OE-sourced stuff. There's a huge range of quality of stuff from China and big sue-able western companies are reasonably competent at getting the good stuff for safety critical items. Random listings on eBay or wherever, less so.
Of course neither tells you how much power the device actually draws at its worst.
grams
Should work. My only caution is amp rating tend to be exaggerated a bit on generic power supplies, so if you can find one that’s even more amps for a similar price that might be better.
(Amp rating = how much power the device can draw before the voltage droops significantly below 12V)