UPDATE (for anyone whi interested) The battery arrived on time, which is amazing as it came from Austin Texas to Northern British Columbia faster than a letter can get from 3 blocks away to my house. After work I opened it up and realized the battery came fully charged. I decided to do a trial last...

Thank you for the input, makes me feel a lot better about the purchase. Price was not an issue because my medical plan covers 100% (minus shipping) and I needed it in a hurry as I am going camping for a few weeks soon. I will have access to a generator during the daytime, but for the sake of a quiet...

This morning I tried to research the BG C-222 CPAP battery from battery geeks. The specs seem to suggest that this will power a Resmed S8 for about 14 hrs, which is about 2 nights for me. I do not (need) use the Humidifier that much, and run pressure about 11 for the night. Has anyone here (and wow,...