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Rechargeable Batteries


oldblokeh 9 1.2k United Kingdom
27 Mar 2012 11:18AM
Alkaline batteries typically supply 1.5 to 1.6 volts off load. The on-load story is a lot different, with the internal resistance often leading to an on-load voltage of around 1.25 volts. This alctually reduces as the cell discharges, whereas NiMH cells maintain the on-load voltage at 1.2 until nearly exhausted.
Ade_Osman 17 4.5k 36 England
27 Mar 2012 11:25AM
I stand corrected.........As usual Grin

All I know is up to now, I always use Duracells in my flash as NiMH just don't seem to compete, both on recycling times and amount of flashes fired, I have thought about a Quantum battery pack, but the cost has been a bit off putting that is until recently since I've created my own macro studio. With the image stacking set up I find I'm knocking out 300-400 shots in a session with no bother, so I've a feeling something like this is going to be on my ever growing birthday pressie list for the wife Wink Short of this a good strobe lighting setup, but that's not as portable....

Ade
theorderingone 16 2.4k
27 Mar 2012 11:30AM
Yes, you will get more flashes with alkalines, but it'll take longer to recycle.

I wouldn't have thought recycle times would be massively important for macro studio work? (I may stand corrected Tongue ) more for action/wedding/PJ/pap work where hosing your subject with flash may be necessary/wanted.
Ade_Osman 17 4.5k 36 England
27 Mar 2012 11:34AM
It is when using live specimens and shooting for image stacks Wink

AdeWink
theorderingone 16 2.4k
27 Mar 2012 11:43AM
Fair enough Tongue I think we're even now Wink
Ade_Osman 17 4.5k 36 England
27 Mar 2012 11:48AM
LOL.....Grin

So in conclusion then, my best option would be one of the Quantum Power packs that plugs directly in the flash head.....Any idea what model number I need to be looking at?

Cheers guys.....

Ade
Coleslaw 15 13.4k 28 Wales
27 Mar 2012 11:53AM
My goodness, talking about geeky.......LOL Tongue
I asked simple questions you know....Wink
Carabosse 17 41.5k 270 England
27 Mar 2012 11:57AM

Quote:I asked simple questions you know


You should know, after all these years, that it's the simplest questions that are made the most complex.

It's what we do best on here! Grin
Ade_Osman 17 4.5k 36 England
27 Mar 2012 11:57AM
Sorry Cole for invading the thread......LOL
Coleslaw 15 13.4k 28 Wales
27 Mar 2012 11:59AM
LOL...
By the way, simple question: If I buy the eneloop batteries, would I need to buy their charger as well?
Ade_Osman 17 4.5k 36 England
27 Mar 2012 12:02PM
I'd have thought any NiHM charger would do the job, though I've already been proved wrong once in this thread this morning so I ain't so sure now Sad

Ade Wink
oldblokeh 9 1.2k United Kingdom
27 Mar 2012 12:20PM

Quote:I'd have thought any NiHM charger would do the job, though I've already been proved wrong once in this thread this morning so I ain't so sure now Sad

Ade Wink



Ahem Tongue I'd advise against using a 1 hour fast charger. It's far too easy to overcook them. The best charger to use with any NiMH cells, Eneloop or otherwise, is peak-detect charger that shuts off when the cell is fully charged. Failing this, use a 5-hour charger. To be more specific, if the cell says it's 2000mAh then I wouldn't want to charge it at more than 1000 mA. Better still, charge at C/10 (200 mA in the example given) for 12-14 hours.
Coleslaw 15 13.4k 28 Wales
27 Mar 2012 12:26PM
Suggestions please? Smile
theorderingone 16 2.4k
27 Mar 2012 12:30PM
I use one of these as my main charger and a cheap 4-hour jobby for when I need to charge more sets at a time.

Any charger will work, just avoid the cheapo quick chargers, as they'll ruin your batteries eventually. The Maha charger allows me to run a refresh cycle on the batteries too, which should prolong their life... in theory.
Coleslaw 15 13.4k 28 Wales
27 Mar 2012 1:06PM
That is too expensive for me unfortunately.
All done now, orders placed.
Cheers all

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