Connecting a CPAP machine to a battery?
I have been prescribed a CPAP machine for Obstructive Sleep Apnea. How do I run this while traveling if I don't have a generator or battery? I am thinking of buying a portable jump starter like thi...
Forum Discussion
kerrlakeRoo wrote:
DW and I both use machines, mine is a CPAP without the humidifier, (appears to use about 4 amps per hr) and hers is a BIPAP with the humidifier (uses as much as 7 amps per hr) Both are Phillips units capable of running straight from 12 volts.
If you wear the mask 8 hrs the energy consumed can be as high as 50 amps per night. for a single machine. So how big is you house battery? can it carry that usage without totally depleting the battery?
wow, your AH seem way high. My resdmed using the 12V-24V converter and not using the humidifier, a nights use is less than 8AH, e.g. less than 1A per hour.
my lithium Ion 200WH battery pack will typically last 3 nights w/o the humidifier. 200WH= 15-18AH so going on that again, 6AH/night or less than 1A draw.
Now the humidifier depending on temperatures etc. can run that up to between 2 and 3A/hr or 16 to 24AH/night.
with the humidifier, the battey pack is good for 1 night.
Like Mex points out, Worst case has been when the night time temps drop well below freezing and the trailer drops to 45F at night. the I need the humidifier and it uses the most current, around 3ish A.
