Folks, Sue and I are heading out camping this Thanksgiving and have a camping/caving related question for the electronics gurus in the group. Sue has a sleep apnea machine she uses. We've used a marine battery that has worked for as long as a week without charging. I checked the amp hour rating of the battery and compared it to the demands of the machine but I'm not sure I got it right or was just lucky. On this trip, we're flying out to meet Graham and Aspen and going camping in Deaf Valley - That's Death Valley, just checking to make sure you're listening. Flying with a 70 pound marine battery probably isn't a good idea. Anyway, we were thinking of purchasing a motorcycle battery from Autozone in a nearby town and was wondering if folks think the battery would last for three nights without charging.
We use an inverter connected to the battery to power the machine. The machine is a Resmed. The specs are AC 100-240V 50-60 hz. 110v 400 hz, 2.5 a. DC 12 V 2.5 amp. I didn't see the DC connection before so I'm wondering if I can get a 12 volt DC cord. Anyway, I'm not familiar with motorcycle batteries and don't know whether they are 12 v or 6 volt and how many amp hours they are. Anyone have some suggestions as to what they do. Thanks Geary, P.S. if you're thinking about breaking into my house and robbing me of my vintage caving coveralls with real canvas grip patchs (a real collectors item), we will have a full time housesitter and visiting friend.
