I just bought a small "Transcend II" CPAP from CPAP Australia (not enough posts to insert the link) - the unit is *very* small. You can get either their P4 battery which lasts about 8 hours, or the P8 battery that lasts about 16 hours. I got the P8. Only received the unit a couple of days before departure and tried it for one night before leaving - worked a treat. As a result I slept like a baby for 5 hours SIN-FRA in J. The best part was no power-point required. Bonus for other passengers was that I was not keeping them awake
The Transcend cost me $1150.00 all up, delivered from Qld to country SA. That included the CPAP, 16 hour battery and a weighted base to clip on if you are using it at home. I'm a very happy camper... or at least I could be a very happy camper if I went camping!
Cheers,
Ken
PS - no affiliation with CPAP Australia - just a now happy customer (they also sell the Provent patches, but I wasn't able to get along with them).