CPAP Battery Backup
Old Dave's ticker has actually stopped twice. He loves to fish and is now willing to do whatever it takes to preserve his health.
Note that this kind of system could be
critical to a mandatory CPAP wearer in the event of a
prolonged power outage due to storms or other disasters.
If you are a mandatory CPAP
Dave asked me, if he wanted to take an extended river trip or another of his famous wilderness adventures (I have gone on two with him), "What would it take to run a CPAP from solar power?"
Dave sent me the specs on his unit, a BiPAP AutoSV with memory card by Respironics. He gave me the electrical specifications from the manual:
Perfect, that's exactly what we need to know to determine what size solar power system it will take to run the unit for 8 hours a night.
Here are the calculations:
Volts x Amps = Watts
So, 12 volts x 3.0 amps = 36 watts for one hour of operation and we need to run for 8 hours for a good night's sleep. We have looked at other CPAP units that require only 30 watts per hour. Running on a low voltage power supply will be helpful so that no inverter is required.
The energy consumption of 36 watt-hours x 8
hours = 288 watt-hours. Taking into consideration a discount
factor for battery inefficiency, we need
about 150 amps for the battery.
If you are a wilderness or outdoor lover who camps in places without grid power, this system will work for you. If you are a mandatory CPAP wearer, having emergency power for your CPAP could save your life. You might talk to your doctor about prescribing this system as a requirement.
You may already have battery backup that runs off the grid, this is good, but will not be so good if the power stays off for five and a half days like it did during a recent ice storm. You may have a generator. This is also good, but not so good if you run out of fuel and cannot resupply, like some of the folks involved in the Nashville flood of 2010.
If you need emergency backup power for your CPAP or any other medical device, we would be pleased to work up the requirements like we have for Old Dave. Get your electrical specifications together and all you have to do is ask. Call or contact us today. 931-962-8665.
A partial list of the brands we sell. If
you need help please inquire,
we have it.