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Old Feb 24, 2006, 6:49 PM   #1
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I know some people are using rechargeable cr-v3 li-ion cells in their D/DS.

I have also seen some remarks, suggesting that AF will be faster with cr-v3 in comparison to AA's - can anybody confirm this from their own experience?

I presently use 2500 mah rechargeable Ni-mh AA's. They work fine for me, as far as number of shots pr. charge goes - but if there is a gain in AF speed, I would consider cr-v3's
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Old Feb 25, 2006, 7:34 AM   #2
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http://forums.dpreview.com/forums/re...ssage=12101686

Hope this helps.

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Old Feb 25, 2006, 11:09 AM   #3
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Thanks!

Lars
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Old Feb 25, 2006, 5:20 PM   #4
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Found a shop that sells rechargeable 3V li-ion's. However, they are only 1100 mAh. I guess this means only half as many shots as with my 2500 mAh ni-mh's ?
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Old Feb 26, 2006, 9:16 AM   #5
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No. In practice, my 1100mAh RCR-V3s has nearly doubled battery life before the camera cuts off, than my 2100mAh Sony NiMH batteries.

Why? Just because 4 x NiMH is at a total nominal voltage of 4.8V and the Li-ion is at 6V, the NiMH simply cannot deliever all their charges before the voltage is too low for the camera to operate properly when it cuts off the battery and shows "battery depleted".

Also, the voltage makes the difference too. 1100mAh at 6V is equivalent to 1375mAh at 4.8V, by simple calculation.

Good luck anyway. If you are to get the RCR-V3, remember to get a *voltage-regulated* one. Those RCR-V3 without voltage regulation can have excessive high voltage and can damage your camera and hence actualy RCR-V3s are all "banned" by Pentax officially:- http://www.digital.pentax.co.jp/en/3...faq.html#04_01

Cheers,
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