Lights and battery life

I bought an inexpensive set of Cateye lights some months ago for a tour,
and while I didn't use them much on tour, I have used them a fair amount
on my commute. I figure I have used them for AT LEAST 3 hours total. And
that is probably on the low side. So a question: How many hours do you
get from a set / charge of batteries? The lights I have use 4AA
batteries in the headlight and two AAA batteries in the rear red blinky
light, which I always use in the always on mode, no blink. I don't know
the model numbers off the top of my head although I guess I could look
them up. I bought them from Nashbar and think I paid about $20 U.S. give
or take a buck or two.

Ken
P.S. And I am still on my first set of Duracells.
--
You never have the wind with you - either it is against you or you're
having a good day. ~Daniel Behrman, The Man Who Loved Bicycles

Homepage: http://kcm-home.tripod.com/