On Mon, 05 Jul 2010 21:18:01 -0500, Joel Connor wrote:

On Tue, 6 Jul 2010 01:35:19 +0000 (UTC), (Mike S.)
wrote:


In article , Joel Connor
wrote:

There's a new type of 1.25v AA battery on the market, using a Lithium
Polymer configuration (not unlike the flat-pack in my MP3 player, but
at a different voltage) marketed by a company name of Hahnel.

A quick cursory search for reviews and discussions seem favorable. With
good low-temperature performance down to 23° F (-5° C), fast charging
times, etc.

Anyone here ever use them and care to comment?


No experience, but your teaser sparked me interest and I looked around.
Unfortunately, the only product under this brand/model I can find is a
pre-charged NiMH cell ... even at the manufacturer's website
(http://www.hahnel.ie/index.cfm/page/aamignonbatteries).

Can you post a reference to a Li-Poly AA product?


I'm getting conflicting information between ads and posts I've read.
Such as this one from amazon.co.uk

http://www.amazon.co.uk/Hahnel-Synergy-AA-Rechargeable-Batteries/dp/B000LY25WQ/ref=sr_1_2?ie=UTF8&s=electronics&qid=1278381027&sr =8-2
which states:

"Product Description
hahnel Synergy batteries offer a number of advantages over traditional
alkaline batteries, including up to four times more power when used in a
digital camera, high performance even at low temperatures (down to 23
degrees F) during your winter holiday, and a vast cost savings in the
long run. The Synergy advantages are even more glaring when compared to
typical NiMH batteries: not only are they ready for use right out of the
packet, but they generally last longer than most NiMH batteries
(continuous and frequent recharging can destroy other NiMH models) and
save both time and money (traditional NiMH charging is slow when you're
in a hurry, while rapid chargers are expensive). All told, you can
recharge these batteries up to 500 times without experiencing a memory
effect; just charge the amount you need and you're set."

Most are claiming a typical NiMH chemistry. One I had read claiming
Li-Poly (and can't find that thread now). It could be I read that page
too fast and confused it for a Li-Poly chemistry. Which had me wondering
because Lithium chemistry will define 3.7v. Though I couldn't figure out
how they got 1.25v base voltage from HiMH chemistry either.

Then there's also the "Mignon" (not Synergy) brand name from Hahnel that
also claims NiMH chemistry.

Oh, and Mignon is not a brand name.
It's just another name for "AA battery".

--
Regards, Robert http://www.arumes.com