Question about Duracell Standby Power Plug 400 Watt Inverter

Can I use a Duracell Standby Power Plug 400 to power a CPAP

The CPAP machine assists my breathing at night. The machine runs on 12 volts and draws 3 amps. How long will the machine run on a Duracell Power Plug 400? The Power Plug 400 supplies 17 Ah at 120 volts.

The difference in cost between this unit and one supplied by the medical supply house is huge.

Dave Short

Posted by on

• Anonymous May 16, 2009

Thanks. I didn't really want to store an automotive battery in my bedroom - actually my wife told me that wasn't an option.

So my question still stands: How long will this machine run on the above mentioned power source?

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Posted on Jan 02, 2017

Ok, Heres the deal. A gel cell battery is 7.2 Ampere hrs, so to get 14,4 Ampere hours you would need two batteries connected in parallel. A F&P machine such as mine consumes around 60 Watts of power. Using Ohms law we get W= IxE or Watts = volts X amps[or amperes = watts / volts] so that a 60 Watt machine has a current draw of 60/110< =0.55A so that a 14.4 A/hr battery will run this machine for around 20hrs (allowing a residual charge of 25%)

Posted on Mar 23, 2010

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Ok, Heres the deal. A gel cell battery is 7.2 Ampere hrs, so to get 14,4 Ampere hours you would need two batteries connected in parallel. A F&P machine such as mine consumes around 60 Watts of power. Using Ohms law we get W= IxE or Watts = volts X amps[or amperes = watts / volts] so that a 60 Watt machine has a current draw of 60/110< =0.55A so that a 14.4 A/hr battery will run this machine for around 20hrs (allowing a residual charge of 25%)

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