One week with Anker Solix S2000 on fridge duty, some real numbers
Had it running in UPS mode on the fridge for a week now. Went through one 14 hour outage and a couple breaker tests.
Idle draw is genuinely low. Kill-a-watt shows 5-7W between compressor cycles vs 20W+ on my old station. That's the main reason this thing lasts so much longer on a fridge.
After the 14 hour outage the battery still had 45% left. At that rate I'd get about 30 hours total on my Samsung 28 cu ft with the kitchen around 76-78F. Slightly under the 35 hour claim but their test conditions use a cooler room and smaller fridge so the numbers make sense.
UPS switchover is invisible. Tested it 4 times by killing the breaker and the fridge compressor never once hiccupped. The app logs every switchover event which is a nice touch.
Only minor note: the fan runs while charging which is audible from the next room. Goes completely silent once it's charged and sitting in UPS mode.