I tested the X30 with two CPAPs, a Dreamstation 2 and a Transcend Mini. With the Dreamstation, I use a heated hose but no humidifier (just a personal preference.) The unit averaged 18% per night. I left it on during the day, and there is some loss on standby So after 4 nights it was down to 13%. This means that my CPAP could outlast any typical power outage. If I turned it off during the day, I could get another night or two. This is almost twice what I have been getting with my Bluetti AC30.
Then I tried it with the Transcend Mini. It averaged 11% per night. This adds up to 8 nights and a couple of naps. 8 nights!
The X30 is lightweight and portable. I camp a lot, and I'll start taking this along. I like the handle, and the footprint is small. Great for our little camper.
There is no solar input so at some point you need a regular wall outlet to charge it.
Cons: With the Dreamstation, the power cord does not have a 90 degree turn. To level it, you have to set the machine on something about an inch thick, like a book. Not a big deal, but if in future generations they were to make this a 90 degree connection, it would eliminate this minor annoyance.
For the Transcend Mini, I had to very slowly and precisely insert the power cord adapter. If you peer inside the port, you can see why. There's a small plastic tube that goes around the positive connector. I think the fault lies more with the design of the port than with the X30's power cord. Nonetheless, be aware that this has to be done just so.
Other than those two fairly minor drawbacks, this is a great device and will definitely have a place in my favorite travel/camping gear!