[pct-l] Battery Info

[jim_fulmis at pacbell.net (Jim Fulmis)]

I am doing the PCT this year as a thru hike & received this information 
today from a friend. I thought the hiking community might be interested (I 
am) so will forward this to you for posting. This is my first try at posting 
although I did answer 1 email directly. So bear with me please.

Jim Fulmis (Yeti)

Hi Jim,

Just yesterday I was enlightened about a new AA battery just out.  It is a 
new lithium battery made by Eveready Energizer.  They are the only ones 
making it, and will be the only ones making it as they hold the patent on 
it.  It is an amazing discovery by Eveready Energizer.  They were able to 
get a 1.5V cell from lithium chemistry.  The normal lithium chemistry 
(lithium, lithium ion and the rest) have cell voltages of 2.7-3.7.  I looked 
long and hard last night and I finally found what I was looking for, actual 
data sheets (see attached).  The L91 is the one that I am talking about.  I 
also downloaded the  E91 and the X91 for comparisons.  Of course the lithium 
L91 is better, hands down.  This is quite a breakthrough.  The batteries 
operating temperature range is goes to -40 degrees F, way beyond any other 
battery.  The capacity is 3000 mAH.

The reason for this email is that I know you recently bought a GPS and that 
you may be taking it on your trip.  If you do, you should investigate the 
L91.  Do note however, several of the Energizer batteries say E2 (E squared) 
as a logo as such.  They are not all the same.  You have to look for the L91 
part number.  These batteries are very expensive, $2-3/each, but will worth 
it as they last seven times longer.  In that sense, they are a bargain.  You 
can get them at REI as well as other places.  You may want to try them first 
to be sure (before your trip), but according to the data, they should be 
great.