If you have the EPR set to 2, it is doing 14, 12, 14, 12, 14, 12.... etc all night with each breath.
When running on household outlet, this isn't an issue. But when running on battery, that up and down would be a drain. How much of one? Eh, not sure but if you are going to be where you can't recharge that battery, every little bit counts. But if you are going to be able to recharge it, then leave it on.
Oh, and if you are going to have to turn it off, then turn it off a few nights or so before you leave in order to get used to it. If you are not going to be able to tolerate it being off, better to find out then than later! And if you cannot, you can then test the battery setup to make sure you have enough juice with it on.
Apnea Board Moderator
Breathe deeply and count to zen.