On Mon, 29 Dec 2008 20:39:36 GMT, The Medway Handyman wrote:

Highjacking this thread, I've noticed my LED torch doesn't seem to light
up when cold - e.g. left in the van overnight, but lights up after a
while in the warm.

Do LED's do this or do I just have a duff torch?

The LEDs don't care about the cold but the battery does. Some fail
completely around or below 0C but recover when warmed back up. Others also
fail and lose all their charge as well. Lithium based battery technology
does best in the cold.

--
Cheers
Dave.