rickC said:Was wondering if anyone has had experience running a CPAP machine for one or two nites on the battery. Would like to dry camp only and not run a generator all nite. The brand is ResMed S-9 Auto. Have a 2020 Hawk waiting to be used.
rickC said:OK thanks much. I have the stock AGM battery (1). Also have portable 80 watt Zamp. Would not want to depend on the solar with the limited sun in my camping situations. Your experiment at home seems tho to answer my question. 4 - 8 hours is a pretty close call for the nite. Good info tho. Is the 12 volt adaptor from ResMed necessary ? Couldn't you just plug into a power inverter ? I have a Ampeak 750 w ). With the limited camping with the wife maybe the easiest answer is putting in a pair of earplugs if you get my drift.
My testing found that I could get 4 nights on the Goal Zero with 12-volt, but barely 2 nights plugging in to the Goal Zero with 110. Everything I have seen on YouTube and read says 12-volt gets considerably more time than 110. You will use more amps with 110.rickC said:OK thanks much. I have the stock AGM battery (1). Also have portable 80 watt Zamp. Would not want to depend on the solar with the limited sun in my camping situations. Your experiment at home seems tho to answer my question. 4 - 8 hours is a pretty close call for the nite. Good info tho. Is the 12 volt adaptor from ResMed necessary ? Couldn't you just plug into a power inverter ? I have a Ampeak 750 w ). With the limited camping with the wife maybe the easiest answer is putting in a pair of earplugs if you get my drift.
Sounds like a nice system! What do you typically find the battery SOC to be after a night of typical usage?CraggyMan said:After looking at the costs involved in a more portable and expensive CKRAP machine I decided to just spend some of the money on upgrading our battery/PV system on our 2016 Fleet. I have a ResMed Airsense 10 for home so I just picked up the 12v adapter to give it a go.
The 2-12v-agm batteries as supplied from 4WC seemed to be close to the end of their useful lifespan so after watching the discussions on various upgrades I had a local shop here in Bend Battery do the work.https://www.bendbattery.com/
Doubled our PV panels from 160w to 320w, along with a single 12v Battleborn Lithium battery and Victron monitor/controllers.
Just before the Covid-19 nightmare really clamped down we were just completing a month long road trip to Big Bend NP and points south. The new system had no issues keeping up with both the ResMed and various combinations of using our furnace and 2-way fridge. I started out not using the humidifier option as I was worried about running the battery down too far but after trying it out one night there were no issues. Probably a bit of overkill on the system but....
I'm finding it hard to isolate exactly how much the ResMed unit actually uses but seems like it's in the neighborhood of 10-15% of battery for a typical night. I need to pay more attention to use and see how the humidifier affects the power draw. Hard to predict what a typical night of use was as weather was really variable on this first trip with the new system. Warm nights we would not be using the furnace but the fridge would be working harder and of course opposite on the cooler end. My unit is cranked pretty high in regard to pressure due to my particular affliction so not sure if this changes the power use.Vic Harder said:Sounds like a nice system! What do you typically find the battery SOC to be after a night of typical usage?