CPAP users

I use a Resmed Airsense 10 with the Humidifier and heater hose turned off, even at home, with the 12 to 24 adapter. just got home from the far north of SA and every morning I looked my 130 A/h batteries ( 2 x 65 a/h) were at 92% & I also use 200W solar panel for my camper trailer to top up battery when staying at 1 location. I have never had a problem except on the CSR when a battery terminal vibrated loose.

Just in regard to power usage. We have 360Ah of batteries, (AGM’s) about 2 months old. We are on the road full time & rely solely on our battery system solar & dcdc charged) for power. Each night since buying new batteries we have used about 10% (9.% to 11% of their capacity. (In FNQ with night temps varying between low to mid 20’s) so averaging 36Ah. Per night.This is running a 35 litre freezer at minus 14 degrees, a 60 litre fridge at 1 degree, My Devilbiss CPAP machine set on auto with pressure range from 8 to 9.5, humidification set on 1 (of 5) & usage between 8 to 10 hours nightly, plus modest lighting , use of radio & phone charging. I would suggest that those using Resmed machines, especially with humidification couldn’t come close to those power usage figures even without the fridge & freezer. Fine if you have power to spare but my preference is to draw the batteries down as little as possible. That’s how I got almost 10 years out of my last battery bank. (Same size, same brand , similar usage). As well as running natively on 12v, the Devilbiss also utilises a unique means of heated humidification which prevents rainout without the need for a heated hose (Pulse Dose humidification - a technology developed for their oxygen machines - which uses far less power).