Charge spare battery
My wife and I both use CPAP machines. When we are at electric sites, no problem. When we do an overnight without hookups, it becomes a problem. The CPAP batteries run over $200 each, so over $400 for ...
Forum Discussion
K_and_I wrote:
Thanks again for the replies. They are Resmed CPAPs and use 24 volts. We do plan to turn off the humidifiers- that is the basis of the calculations I used to size the battery. Things may change in the future, but for now, I just need 1 night's worth of use at a time. We do not boondock for more than 1 night without a plug in between.
ok battery power solutions makes a 12 to 24V dc to dc converter for the resmeds. BTW the resmed ONLY runs on 24VDC ALL the time, the wall plug brick converts 120V to 24VDC. cost of the bps converter is around $50 IIRC. Once you turn OFF the humidifier AND use airplane mode, the resmed will draw less than 1A. that's 8AH or less per night. even with two at 16AH/night and a single 75AH battery you should be able to go 3-4 nights before needing to recharge.
