Thanks everyone,
I guess its AA lithium for me -- at
least to start with -- and a DC power
supply for the laboratory where most of
the work will be done.
Don
Godfrey DiGiorgi wrote:
On Oct 18, 2005, at 3:07 AM, Don Williams wrote:
I need more advice.
Alkaline, Nickel metal hydride, or LiIon rechargeable CR V3 compatible?
It depends on how much use you make of the camera.
- Alkaline cells are for emergency only ... not enough power, and camera
operation is sometimes flakey due to power fluctuation.
- If you shoot 200-600 exposures a week, NiMH make good sense. A good
set of NiMH with 2300mah or better capacity, and a good charger, should
return 400-700 exposures per charge and will usually require charging
once a week, regardless of whether they've been used or not.
- If you shoot less or more infrequently, AA Lithium or CRV3 Lithium
disposables have enormous shelf life and last between 1000 and 1300
exposures per set. AA Lithiums are a little less expensive than CRV3
when bought in sets of 8 and 12 cells, nearly the same capacity.
- CRV3 Lithium-Ion cells are expensive and not recommended. Most are
over-voltage for the camera, there is the potential to cause damage.
I find a good strategy for my general use is to use a set of NiMH AAs,
2400mah capacity, and charge them every week. I keep one set of CRV3
disposables in the bag for backup at all times (faster to change than
AAs, smaller number of things to rattle around loose...).
When I went on a 3 week trip in May-June, I carried five sets of Lithium
disposables to eliminate camera battery maintenance. I made 2800
exposures and did not completely exhaust the third set of batteries ...
I think I reached 3600 exposures before I put my NiMH batteries back in,
after returning home. That's 1200 exposures per set of batteries, at
~$8.00 per set, which seemed a reasonable price for the convenience and
lack of maintenance.
Godfrey
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Updated: Photomicro Link -- 18 05 2005
