Originally Posted by
veefib
Check your CPAP power adapter, I will bet that it runs on 12V or 13V power natively. Therefore, you have a few options:
1. Get a 12V-110V inverter (most switch from car to empower port no problem). Your CPAP draws at most 50W (mine draws 25), so any inverter should be able to handle this.
2. Consider buying a battery pack next time you're in the US (they're cheaper) - such as
http://www.amazon.com/Energizer-XP18.../dp/B002K8M9HC (not an endorsement, I use an earlier model that works quite well tho)
3. See if you can get a car adapter specifically for your CPAP. These are usually atrociously priced in the US (medical certification/liability/etc.), may be better in the EU.
Especially if you have the battery pack, you are now covered in just about any eventuality. If the crew give you grief, tell them that it's for their safety as well ;-) (I am a 10/10 on the snoring scale - they heard me two soundproofed rooms over ;-)
I know you are trying to help. But please try and answer the question I have asked. I have already explored various options you have suggested. I already know the specs for my CPAP and what accessories are available.
If there were 110 V ac ins eat, there is absolutely no problem.
MY CPAP power supply needs 24 V dc. Power draw is not the issue as without the humidifier, they draw little power.
What seems obvious is not always true.
MY CPAP was marketed for two plus years before they produced 12V dc-24V dc converter. I would rather not buy it, because I have gone through three CPAPS in three years. I don;t want to keep buying attrociously priced, cables and connectors.
I know one can use an inverter with a battery.
But can an inverter be used with any DC power supply?
A 12-24 dc-dc converter can be used with the CPAP, but, according to the manual, the CPAP can be damaged if the converter is connected to a dc source which is being charged. I can't figure out why that would be?
A battery pack would still require a DC converter since mine works at 24 Volts. Moreover, I am talling about long haul flights--- flights lasting 12 or more hours.