I looked at the Zopec explore mini
$399, 1 pound, 99.5 wh
that would be equivalent to 27,000 mAh lithium battery
DC out to go directly into cpap, and usb output plugs
Anker has a 27,650 usb power bank. $179. I can’t find the weight on anker’s annoying website, but I think it’s about 1 pound based on the weight of my 20,000 usb battery (13 ounces)
Yeah Zopec isn’t too bad cost wise and would work really good for cpap. I bet it’s more reliable since its designed for medical devices