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Re: Heated Batteries
>From Steve Buchholz and others with cold batteries....
>I've seen people mention some sort of inductive heaters for heating
>engine blocks ... these would probably be more appropriate. I don't
>know if they are simply resistive heating elements that conduct heat
>to the block, or if they use an alternating magnetic field to create
>eddy currents and heat.
I have heard of a recommendation to turn headlights on for a few
minutes on really cold mornings ( evenings, nights ) and then turn
them off for a few more before trying to start your car. The
theory behind is that the 20 amps or so flowing through the
battery will warm it up a bit, perhaps five or ten degrees. The
short gap allows the battery to recover, and the heat to
evenly spread all over it.
Now, what if someone decided to put this ( wasted in the
headlights ) energy to better use, such as heating the
oil in the engine sump with a small ( 200 watt ? ) heating
element right in the base of the sump ?
Else you could switch on your seat heaters on for five
minutes ( have to rewire them to bypass the ignition switch )
to keep your fanny warm.