Generator/Power inverter

[Seawind36]

I have a Resmed S9 and will be going camping soon where there is no power I will be there 4 nights and need to figure out how to run my cpap while there. Any suggestions on models? I know Honda, but they are really pricey. What do I need to look for? I'm at a loss here.

[Pugsy]

You can use battery power
See this thread for the basics
viewtopic/t114012/Choosing-a-Battery.html

[amenite]

I guess Toyota Prius owners already know this, but from what I've read the more recent Prius models have inverter + A/C outlets built in (maybe as an option?). If car camping I think I would borrow a Prius if I could get my hands on one. The kicker is the car can be put in what is called "Ready" mode whereby you can plug stuff in and run it off the battery via the car's inverter, and the car just turns on when the battery runs down low enough, charges the battery, then turns the gas engine off automatically. From what I've read this was something you had to hack with older models by tying an inverter in to the standby battery pack in the rear of the vehicle, but Toyota has added this as a feature with the inverter built in and a few a/c outlets.

[GreenBean]

Prius owner here. No AC outlet (I wish but also would need a 15 Amp fuse instead of the 10 amp it's currently wired for) but there is a DC outlet (cigarette thing?) that you can get a shielded adapter for but be sure the cpap adapter end works for your model of cpap. Something about polarity of the variety of barrel end that plugs into the machine. Otherwise, you're correct, amenite, the car is put in Park in the Ready mode (the equivalent of having the ignition on for an all gas car). The cpap will be running off the car's giant battery. If it gets a little low the gas engine will run for a few minutes to recharge. Long distance driving or camping - you can sleep in the car in "Ready" mode and run the cpap as well as air conditioning or heater and usb charge your phone. It's almost like having a huge portable battery/charger on wheels!

Prodigyplace (?) is very knowledgeable about the Prius and can explain more technically and eloquently.

If you don't happen to have a Prius available to you, then the thread Pugsy referred you to by CapnLoki is a very good start. S/he has a few threads and replies, I think, so do a poster search too. For an inverter I think you want pure sine wave to be sure your cpap and other electronics don't get stressed.

[Seawind36]

You can use battery power
See this thread for the basics
viewtopic/t114012/Choosing-a-Battery.html

After reading through the thread, I am thinking about the Resmed converter with a couple of scooter batteries. Will that work? Any opinions?

[Pugsy]

After reading through the thread, I am thinking about the Resmed converter with a couple of scooter batteries. Will that work? Any opinions?

I believe CapnLoki mentions scooter batteries often.
He lives on a boat for prolonged periods of time so he has a lot of experience with batteries.
I don't have any personal experience myself so the best I can do is refer you to his writings.
For sure you will want the ResMed converter.

He will probably stop by here in comment in your thread the next time he logs in.
If you have the time and just start reading is many previous responses and answers to questions I think you will learn a lot.
Your question isn't new. It's been asked hundreds of times in the past.
search.php?author_id=67433&sr=posts

[Seawind36]

I figured it had been asked many times! I've been sitting here reading and hubby hassling me over spending so much time reading. "Well, can't you live without for a few days?" Yeah, reading time is somewhat limited and add to that not be sure about what I read sometimes...... never hurts to double check!

Thanks you very much! I will wait and see if CapnLoki stops by. Otherwise, I will look into the most economical way to acquire said items!

[amenite]

You can use battery power
See this thread for the basics
viewtopic/t114012/Choosing-a-Battery.html

After reading through the thread, I am thinking about the Resmed converter with a couple of scooter batteries. Will that work? Any opinions?

As long as you're not using heated humidifier or heated hose you would probably do well with a few of these U1 scooter batteries. Just remember you don't want to discharge them down to 0% of capacity as it will shorten their life. Plan to use 50-80% of the battery capacity, then charge.

[chunkyfrog]

I bet CapnLoki has been boating today . . .
And having fun--I hope.
He helps a lot. He deserves a load of fun.

[amenite]

Prius owner here. No AC outlet

I read that it was going to be an option, but now I see that article was from 2015 so it must have been vaporware. Also read some people had wired inverters in to the battery bank and used ready mode to run home appliances for extended periods after Sandy. Like running the fridge and misc other small stuff for a week on 1/2 tank of gas. The ready mode is a great feature. This is on my radar for future.

[Seawind36]

[/quote]
As long as you're not using heated humidifier or heated hose you would probably do well with a few of these U1 scooter batteries. Just remember you don't want to discharge them down to 0% of capacity as it will shorten their life. Plan to use 50-80% of the battery capacity, then charge.
[/quote]

Does this apply to the deep cycle batteries? How do know how far down they are?

[Pugsy]

The humidifier and/or heated hose is a big energy drain so it is often recommended that people turn off the humidifier and heated hose if they use one to save battery life.
You might try it at home one night just to see how much you actually need the added moisture and that will help you in your decision as to what to do about the batteries.
You can still have water in the the chamber but just turn the heat off. You will get a little added moisture just from the air flowing over the water.

One of the reasons I have never really done the camping with batteries thing is that I can't do without my humidity. My nasal mucosa get all messed up and the sinus/nasal symptoms are horrible. I know this because of what has happened just when I forgot to fill the water tank and it went dry during the night.
So that's why I don't have any real first hand experience going without electricity and here at the house we have a whole house generator set up in case of power outages.

It's a holiday and I bet CapnLoki is off doing some fun stuff. He will probably stop by tomorrow if not later tonight.

[palerider]

I figured it had been asked many times!

Weekly... at least... it should be a FAQ

[lordvader]

Honda is the way to go. Super quiet.

[palerider]

Honda is the way to go. Super quiet.

many times more expensive than a battery, and *infinitely* noisier