Connecting solar, batteries and inverter.

reesehead · Member

Connecting solar, batteries and inverter.

Treecrest14 · Senior Member

I kknow nothing about the theory,but it would depend on the CPAP machine. I'd be surprised if the 300w inverter would run it. I'd suggest you do a test on the cpap, invereter and the battery config. If that works ok, then I'd suggest you really require 2 batteries, because you wouldn't be able to recharge your one battery on rainy/overcast days.

Cruising Cruze · Guru

Hi John

there are 12 volt Cpap machines I would think they use less than running one on 240 volt via inverter
But I can be wrong
Most likely some one with a bit more know how will answer your question how to do it
I've got no idea how much they use on power

Regards John

aussie_paul · Guru

reesehead wrote:
Hi Team, I have searched but can't find info. about connecting portable solar, deep cycle and the inverter so I can use my cpap machine when camping.
Question, do I need to monitor the battery so it doesn't get too low, or will the inverter control that.
Sorry I have just started my cpap and I need to power it. It's a F&P so it needs an inverter.
I have 120watt portable solar, 100 deep cycle battery and 300watt inverter.
thank for any info.
JR.

Here is the link to my CPAP machine questions. http://thegreynomads.activeboard.com/t58431313/sleep-apnoea-diagnosis/?page=1#lastPostAnchor

Aussie Paul. smile

reesehead · Member

Ok Thanks guys for your replies.

I do know that F&P tested their machines using a 180watt inverter from Jaycar in their workshop and found it OK. So yes I will give it a test run today.
Aussie Paul I have checked the link, thanks.

Cheers
John

Plendo · Guru

John,

please make sure your inverter is a PURE SINE WAVE inverter, as electronic equipment may be damaged by using it with a modified sine wave inverter.

Blue · Senior Member

Plendo wrote:
John,
please make sure your inverter is a PURE SINE WAVE inverter, as electronic equipment may be damaged by using it with a modified sine wave inverter.

great reply...always use a pure sine wave...

my mrs has an F & P machine and looking at the specs of 240V at around 1amp then you are looking at a 240Watt machine

the mrs machine runs through a 300 Watt inverter easily...

if you want to keep your battery charged then get a solar panel for the roof of your rig... I would suggest one of these.. I've already used the link today in another thread... its a flexible, light weight design that's easy to fit... you can just silicon it on your roof

http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=221564027756&ssPageName=STRK:MESE:IT

so... lets start at the solar Panel...

you need your solar panel (115 to 120watt)

you need a battery regulator so keep your battery properly charged and not over cooked

you need a battery

you need an inverter that runs off your battery or you can run it out of the regulator...

you need a fuse between your battery and inverter

easy

ok... I just copied a picture from that link above on how to set up your panel to the reg to the load.. check it out

-- Edited by Blue on Monday 6th of October 2014 08:05:27 PM