Interested to see what answers you get on this, Orome. My CPAP machine (Respironics) only runs on 110 AC.
Just make sure it's a deep cycle. Most optimas are longer life batteries but are still just for starting (a lot of power for a short time).get an optima battery - it is a long life battery , have been using one in my e for two years w/o a problem. the previous e battery died a lot. get a recharger for the battery that runs off of your cigarette lighter outlet.
Twelve Gold Peak Industries (P/N 1865L200) 2 Amp-Hour Lithium Ion cells per battery pack.That's an intriguing machine. I wish the specs noted what kind of battery it uses.