We have a trip planned to Israel. Both the trip over and back leave around 11:00PM. I evaluated the various alternatives for a "portable" battery backup for my AirCurve 10 ASV. I actually found a Freedom CPAP Battery source that acknowledged that the AirCurve 10 ASV required significantly more power and she wasn't sure if the Freedom Battery would work. She recommend that, at least, I chain two Freedom Batteries. She OFFERED (and put on the invoice) that I had 30 days to test the batteries and if they DID NOT work for me, I could return them.
As you can see from the below image, the installation was extremely simple. The only requirement was that the installation had to be in this exact order:
1. Plug the DC power pigtail accord into the DC OUT jack of both batteries.
2. Plug the 24V power converter box into the DC power pigtail cord.
3. Insert the AirCurve 10 output cord into the power converter box.
4. Plug the 24V power converter with the AirCurve 10 output cord attached into the DC input port of the AirCurve Machine.
5. Turn on the AirCurve.
6. Go to sleep!
The two-night results were VERY surprising.
First Night: I only slept for 5 hours and 23 minutes, but it only used about 15% of each battery.
Second Night: I slept for 6 hours and 17 minutes.
As you can see from the below image, for the two-nights, 11 hours and 40 minutes, the batteries still have 60% and 63%.
So, I am very pleased with the purchase.
CAVEAT:
Probably Dreamstation users and most AirSense users would have not problems, and would probably only need ONE battery. However, AirCurve ASV and probably ST users might not experience the same results I did, depending upon your settings. As Pugsy pointed out to me, I have, "dumbed down my ASV machine." From the beginning of therapy, I have not adjusted well to Bi-Pap. So, I use settings: Min EPAP 8, Max EPAP 11, Min PS 0, Max PS 15. So, I would experience considerable less pressure fluctuations that most would have.