toyohome Posted December 13, 2016 Share Posted December 13, 2016 I recently started using a CPAP and need to use it when I'm in the boonies. I have a 90 watt, plug in inverter that I would like to use. The CPAP is 115 volt and 60 watts. I have two deep cycle batteries and would need to draw power for an average of eight hours. 1. Would I be overloading the 12 volt socket/wiring? (I prefer to avoid any electrical fires particularly while I am sleeping). And, 2. Would I have adequate power to run the CPAP off my two auxiliary batteries? Electrical Wizard advice is appreciated! Quote Link to comment Share on other sites More sharing options...
Derek up North Posted December 13, 2016 Share Posted December 13, 2016 I'm no electrical wizard, but I assume they would like to know the capacity (Ah) of your batteries. Quote Link to comment Share on other sites More sharing options...
jjrbus Posted December 13, 2016 Share Posted December 13, 2016 http://site.theinverterstore.com/blog/inverter-faq/battery-run-time/how-to-inverters-cpap-machines-and-camping-oh-my-666/ Quote Link to comment Share on other sites More sharing options...
WME Posted December 13, 2016 Share Posted December 13, 2016 (edited) Most CPAP units are powered by a wall wart adapter, my wifes unit the adapter puts out 12v when plugged into 110v AC. Check yours if you have an adapter check its output V. If its 12vdc, most likely the CPAP mfg has a cigarette lighter plugin. I have 2 100ah AGM batteries and a 200w solar panel. Run the CPAP all night, run 21"tv, run Fantastic vent Fan, lights when ever I want and always a full charge at sunset http://www.ebay.com/itm/12-Volt-DC-Power-Cord-50-series-Respironics-M-Series-Remstar-Synchrony-SystemOne-/281715243357?hash=item419789795d:g:-DoAAOxyhodR0GDb Many others available Edited December 13, 2016 by WME Quote Link to comment Share on other sites More sharing options...
Maineah Posted December 13, 2016 Share Posted December 13, 2016 Yeah even at 12 volts it's only about 5 amps. Quote Link to comment Share on other sites More sharing options...
jmowrey Posted December 13, 2016 Share Posted December 13, 2016 19 hours ago, WME said: Most CPAP units are powered by a wall wart adapter, my wifes unit the adapter puts out 12v when plugged into 110v AC. Check yours if you have an adapter check its output V. If its 12vdc, most likely the CPAP mfg has a cigarette lighter plugin. I have 2 100ah AGM batteries and a 200w solar panel. Run the CPAP all night, run 21"tv, run Fantastic vent Fan, lights when ever I want and always a full charge at sunset http://www.ebay.com/itm/12-Volt-DC-Power-Cord-50-series-Respironics-M-Series-Remstar-Synchrony-SystemOne-/281715243357?hash=item419789795d:g:-DoAAOxyhodR0GDb Many others available What batteries are you using? I've been looking at lots of different AGM batteries and haven't found any definitive information on which ones are the best. Quote Link to comment Share on other sites More sharing options...
WME Posted December 14, 2016 Share Posted December 14, 2016 Trojan AGM 31 size. Best???? who knows. To be honest the reason for my AGM is that they are inside and unvented. A few years ago this was OK, now the nannies are saying its a bad idea. If $$ count then Sams Club has flooded cell g-2 sized 6 volt batteries for $90 ea. Quote Link to comment Share on other sites More sharing options...
sonny sunrader Posted December 14, 2016 Share Posted December 14, 2016 I've seen commercials on TV for new small cpaps made for camping, they have there own rechargeable batteries. I don't remember the brand but you maybe able to find it on line. hope this helps Quote Link to comment Share on other sites More sharing options...
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