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Old 01-04-2009, 10:57 PM   #6 (permalink)
RotorJockey
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My HF Map location
Join Date: Dec 2008
Default Hello darkhaven

I have run several tests with just the foil and from what I can tell, just starting off with a warm battery and reflecting the heat back to the battery with the foil, the difference is only a couple of degrees with the hand warmers.

When you get to the point of EXTREME cold, the foil may no longer be enough, but for up to 5 degrees below freezing (f), the foil does an outstanding job of holding in the heat.

I intend to test lower temps as the winter progresses.

the results for anyone else who tries this will be welcome.
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