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.
Maybe they're just a new NiMH configuration and not Li-Poly.
In either case, they seem to be an improvement over the more recently
popular "Eneloop", "Hybrid", and other "pre-charged" NiMHs out there. The
rated 1.25v strongly suggests a different chemistry. So I was wondering if
anyone's been using them and if they perform up to their claims.
I do a lot of near-arctic-temperature photography at times (down to -44F)
and any improvement in cold weather performance, as well as reliable
fast-recharge times, intrigues me.
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