Saturday, Sep 11, 2010 at 07:36
Is that a 1000AMP jump start pack?
They only carry smallish capacity batteries.. about 18Amp Hours for the projector branded unit. Be carefull about the ratings. 1000Amps is a burst of 1000Amps power to start the car. The long term power capacity is measured in AH (Amp Hours).
So using a very simplistic calculation... 18Amp Hour
battery, with the fridge pulling about 2 amps = 9 hours compressor run time. 1/2 that again since the
battery should only be drained to 50% = 4.5 hours. Assume that the compressor runs for 1/2 the time. (probably less) its still only 9 hours before the fridge cuts out on low voltage if the
battery was charged properly. If the fridge is set at a high cut off, then it might only last for a few hours.
I have a 120Amp Hour AGM
battery (about $400) that runs my evakool (same danfoss compressor) for 4 days as a fridge/freezer set to about -3 in the freezer.
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