On Mon, 19 Sep 2011 21:10:09 -0700, JR North
wrote:

I've had 2 HF a/d helmets for 6 years-never needed to replace the
batteries-yet. I remember the thread, but not the details. But, c'mon,
yer a smart guy, right? You don't really need to be shown, do you?

I wonder if the helmet would recharge if left in the sun...

--
A sound mind in a sound body is a short but full description
of a happy state in this world.
-- John Locke