I will let you know. I need to get one of those measurement deals so I know for sure how much everything really uses.
The reviews said that the battery indicator didn’t work very well, so they weren’t sure without something else measuring how much had been used.
I just was reading that ResMed has approved Radio Shack Power Inverter catalog #22-132A for use with the cpap(I expect without the humidifier). That inverter is peak 200W for 5 minutes, and 140W continuous.
I sure hope what I bought works for at least 2 nights. Hubby said I should have gotten an even larger one so I could use a toaster - LOL.
I have an inverter that I have never used as we don’t camp I’ve just used the battery and then just recharge it when the power comes back on. That battery is dang heavy and I keep it in the closet.