camping, sleep apnea, and cpap machines

Well, the camping trip was a huge success! We went to Monroe, MI. The weather was perfect! And most importantly, my cpap machine worked great!
The first night I got about 7 hours of sleep before the battery level was too low so the machine cut off. I had the battery charging all day and the 2nd night it ran about 7.5 hours before cutting off.
I bet if I had the DC power cord and could eliminate the inverter, I would have had more time but 7 hours is usually enough, besides the boys wont let you sleep much longer than that anyway!
Now I have a backup plan for when we lose power at home this summer.

 

As far as the data card goes, I have no idea. I have not downloaded mine since I left Schneider (3 years ago). I can tell you that while I drove for them, I would shut the truck down whenever I could while sleeping and never had a problem with the data card or using the cpap machine off the truck batteries all night.
You should be able to use your machine all night off the truck batteries w/o idling, but I never used the humidifier and the cpap was the only thing running. (No cooler, TV, or computer)