UPS Battery Backup for CPAP in case of power outage

[puterwiz82]

Which UPS Battery Backup would be good to use with the Resmed AirSense11 in case of power outage? I see from the manual that the unit uses 53W but peak is 73. I’d like a small or medium size battery backup that will give like a few hours run time, and also to provide surge protection for it. I saw a cyber power one in the store but 70W it would run 14 minutes.

[ahimahi]

I bought a 260Wh portable one from amazon: https://www.amazon.com/dp/B0BKZ5D7XH
Without climate control (humidifier, tube temp off), the battery was at 90% in the morning.
With climate control on Auto, the battery remaining charge was 60%.

[puterwiz82]

Thank you for the information. That is an idea. Before I saw your response, I ended up going with the freedom v2 cpap battery. I connected the included power supply to the battery and the battery to the cpap to provide a battery backup

[Br1sleep]

Make sure to test the Freedom 2 as a battery. (unplug it from wall and see if it will power your cpap). I bought one two years ago and used it as a ups. Worked fine to pass power through to my (ResMed) cpap. Had the first power outage a few weeks ago and found that the battery didn't work! It's supposed to switch to powering the unit if no wall power. It doesn't. I held its button to reset it (as manual said), I tried charging it without it being connected to cpap. When plugged it, it shows me it's 100%. Soon as I unplug it, its display no longer lights.

So I have a $300+ piece of junk. Unfortunately, I never thought to test it just as a battery when I first bought it and it's past its 1-year warranty.

I'm open to suggestions if anyone knows how to fix it!