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Re: Trojan T105 Batteries – First real test

Posted: 07 Jul 2012, 15:17
by trentjim
ghost123uk wrote:I wonder what the time on v time off (thermostat) of a fridge like that is ?

70W = 5.83 amps @ 12 Volts and fridge was on for aprox 72 hours = 420 Ah :shock: so the fridge must only be "on" for perhaps ~20% of the time to be still running after 72 hours.

Where have you fitted them ?

I did some thermodynamics calcs on the 'other' thread to illustrate that the wattage of the fridge is a fairly irrelevant figure to its juice use. It's the heat that gets put into the system that counts e.g chilling down beers from room (van) temp and the u value of the insulation.
All a low wattage fridge does is cycle for longer. If I followed my usual camping strategy of filling 80% of the cool box with deep frozen cans and 2l frozen pop bottles I'd expect energy use to be approx zero for the first 3 days (maybe 5days this summer! Lol)

Re: Trojan T105 Batteries – First real test

Posted: 09 Jul 2012, 07:12
by ghost123uk
Good point (and good strategy ;) ) Jim :ok