On Fri, 17 Aug 2001, Dario Bonazza 2 wrote:
> Pentax doesn't suggest the use of rechargeable batteries (NiCd or NiMH) on
> their battery grips because of their lower power compared to alkaline.
> I could agree with Pentax about Ni-Cd, while most recent AA-size NiMH
> batteries reach 1,800 mAh, exceeding akaline which are at 1,500 mAh.
Actually, alkaline still leads in terms of capacity. For example,
Eveready Energizer AA is rated at 2850 mAh. However, alkaline has a
different discharge characteristics, and the usual 0.8v cutoff voltage
used in measuring capacity does not apply very well to photographic
equipment. So we probably won't get the 2850 mAh if we use them in a
flash, for example.
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