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Old Oct 31, 2004, 9:07 PM   #1
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My step-father has a question that I was hoping maybe one of you could answer.

His Fuji cameras say don't use Ni-Cd batteries but you can use alkaline and Ni-MH batteries.

He doesn't see any obvious difference as alkaline batteries are 1.5v, Ni-Mh batteries are 1.2v and Ni-Cd batteries are 1.2v.

Why can't you use Ni-Cd batteries in digital cameras - is there a valid reason?

I personally think it's a scam to get people to buy new batteries/adapters/chargers but hey, what do I know. (Nothing about batteries as it turns out.)

Any help would be appreciated.

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Old Oct 31, 2004, 11:40 PM   #2
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Well, they are ancient technology compared to NiMHs.

What's the highest capacity of a NiCD AA...1000mAH? NiMH AAs are now around 2400mAH...it's like putting a Smart Car engine to power an 10 passenger van.

Just say NiMH!

(If you don't know what a Smart Car is, it's that little two seater Mercedes.)

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Old Oct 31, 2004, 11:52 PM   #3
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Thanks for the battery info.

So is that it - the mAH rating simply isn't high enough to make it worth the effort to bother with?

Has anyone ever tried a Ni-Cd battery in their camera and if so, to what effect?

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Old Oct 31, 2004, 11:53 PM   #4
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I would say use NiMH batteries ONLY. Alkalines can be used in a pinch but they are not cost effective anddo not last as long as a good set of 2100 MaH or higher NiMH's.With rechargables you can reuse them 500 to 1000 times. Even considering the cost of a charger you come out way ahead over single use alkalines in the long run. It's not a scam but good economic sense to use rechargable NiMH's.

As for NiCd batteries, they are old technology. They don't have near the capacity of NiMH. If you can find them today they have 1/3 or lessthe capacity of NiMH's.

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Old Nov 1, 2004, 12:41 AM   #5
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D Parker wrote:
don't use Ni-Cd batteries but you can use alkaline and Ni-MH batteries.
The one advantage of Ni-Cd over NiMH is their lower rate of self-discharge. Your stored fully-charged Ni-MH cells won't be fully charged when you come back to them weeks or months later, so it's a good idea to top them up before use.

However, as Ni-MH start with a lot morecharge, this is not a serious drawback.

See http://www.batteryuniversity.com/index.htmfor a comprehensive battery discussion.

Good luck!
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Old Nov 1, 2004, 8:07 AM   #6
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NiCd cells have a lower internal resistance (impedance)compared to NiMH. That means that they can deliver even higher current. This however is not needed in a modern digital cameras, which don't draw that much current anyway. On the other hand the capacity is 2-3 times lower, so runtimes will be frustratingly short. You can useNiCd of course if you don't mind the short runtimes. I have, and still use NiCds for some of my external flashguns where the lower internal resistance makes for a slightly faster recharging.
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Old Nov 12, 2004, 6:00 AM   #7
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blr - I was thinking of doing what you did with NiCd cellsin flashes. How much more of an improvement in recycle times are they for your flash? Since I am predominantly more worried about recycles times than longevity with a single set of batteries, this seems to be the go for me too.

There are specialist NiCds sold to the R/C community that demands extremely high current drains, I'm thinking batteries designed for the abusive use of a full drain in4 minutes flat, and 15 minute full charge at 5C charge rate will be more than enough for repetitive flash use and the much gentler "quick charge" of normal consumer grade battery chargers.
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Old Nov 12, 2004, 8:40 PM   #8
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I wish I could just remember where... but I read that you shouldn't use batteries with different chemistry than the ones the equipment is designed to work with. Now, perhaps that only applied to Li-Ion VS Ni-XX, and not to Ni-Cd Vs. Ni-MH.

I can't remember... well, this wasn't going to be my most useful post anyway. :angry:
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Old Nov 15, 2004, 6:29 PM   #9
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IMO, Ni-Cad still the choice for (relatively) high current drain equipments (RC, rechargeable tools … ) . For photo use, excepting some high power flash (that used acid or dryfit cells) , the Ni-MH is the perfect economic and functional choice.
Myself I converted my Metz battery racks from Ni-Cad (500 mAh per cell) to Ni-MH (1700 mAh per cell) , work perfectly , and use the same slow charger (of course, a bit slower to fill up:blah


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Old Nov 28, 2004, 4:41 PM   #10
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I do batteries . It's like religion . Nicad never had memory .

Nicad is same as nimh , both are recharg' alkaline .

1.35 volts if lightly loaded . 1.23 is dead( while loaded) .

Non-recharg'; alk's are 1.55 new , lightly loaded 1.45 vdc

They have many times more energy than recharg' types .

99% of all AAA's are being discharged at 5 times their legal rate

thus you don't what you paid for in energy .

Digicams discharge AA's at higher than legal rate , you will NOT

get makers rated energy ! But recharg' types can discharge at

higher rates , so it's better from that point to use them .

Recharg' batt's have very amp rate . A tiny wet Nicad starts a

huge gas turbine engine because it has exactly the right rate .

a 14 lb wet nicad can make 1000 amps safely .

Always pulse charge batteries , morefullycharges the plates .

This was the famous Nicad memory !!!


life .... IN ALL cases , all types ..

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