Bionic Man wrote:
Maybe I didn’t explain my situation adequately. I’m concerned about use in my RV but my big trip is on a houseboat that we are partners on. The inverter on the boat is not accessible where we sleep.
I don’t mind paying cash for this. The respiratory therapist gave me a pamphlet on one made by the company that makes the cpap. But also advised me to just go on Amazon and pick one up.
I was thinking something like this.
Amazon
Ahh. Houseboat. Different scenario indeed.
Since you have about a month before your trip, I would pick up a
Kill A Watt and plug your CPAP into it to see how much power you're actually using per night. Then you can compare your nightly usage to the capacity of the battery to see for yourself whether it will work.
And here's a workable link to the battery:
CLICKY.
Good luck.