On 9/23/2013 12:23 PM, JohnDeRosa wrote:
Pricey but for those the fly with O2 every day then over the long term it would be cheaper
as there would be no refills.
Here is a unit for $3K.
http://www.emedstores.com/xpo2-porta...extra-battery/


The devil is in the details! But the specks on that unit say 10,000 feet.

These things are mostly made for airline travel. I don't think we've
ever seen more than about 6,000 feet cabin altitude inside an airliner,
(Yes, I travel with an altimeter) so there is little incentive for the
manufacturer to make them work much higher, or even test them at high
altitudes.

My wife needs to travel with oxygen. We have rented several different
Portable Oxygen Concentrators (POCs) with uniformly good results, and
finally bought our own. Assuming pulse oxygen delivery, we get
excellent battery life on trips.

Try before you buy! You can easily rent these units. Fly one with with
a pulse oximeter ($39.99 at Walmart) to verify that it works for you and
to determine your settings. The settings have a big impact on battery life.

Vaughn