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An electronic device that supplies electrical energy to a load. It can be AC or DC input. Typically DC output.
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Working out how long a battery will last
I'm hoping somebody can help me understand this. I use a Resmed S9 VPAP ST-A/ S9 COPD which according to documentation at my settings draws a current of 1.4A.
I use a Resmed Powerstation 2 battery. T …