On Thu, 17 Jul 2008 04:19:14 -0700 (PDT) someone who may be Andy
Dingley  wrote this:-

>It's modern vacuum tube tech, not a flat plate. You'll see far more
>than 50 days use out of it.

Indeed. It will gather sunlight on all but the most overcast days.
It does not need direct sunlight to work.


-- 
  David Hansen, Edinburgh 
 I will *always* explain revoked encryption keys, unless RIP prevents me
 http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54