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Old Sep 7, 2006, 11:52 PM   #1
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Hello,I own 3 Lithium Ion batteries for my Nikon D70. Two of them are the original EN-EL3 battery, while the third one is the newer EN-EL3a battery. In the past month each of them were fully charged. Since then I have taken many photos, however, none of them were used to their full charge capacity.*I plan to photograph an event for the whole day on this Saturday and I am concerned my batteries will not have enough charge to last the day.Question:Would I shorten the battery life /ruin my 3*Lithium Ion batteries if I fully charged them again for Saturday's shoot? Or do they need to be depleted first before I fully charge them?Any help would be appreciated. Thank you!Neil
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Old Sep 8, 2006, 1:13 AM   #2
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I've read on several sites that Lithium-ions are the type that should be charged often, and should not be drained completely. I also read that when not in used for a long period of time, if possible, they should be stored with 40% charge.

My mobile phone battery is also Li-Ion and I plug it in almost daily, and it had lasted three years so far. (That should be kinda related.)


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Old Sep 8, 2006, 3:51 AM   #3
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Li-Ion batteries don't need discharging before charging but sometimes they seem to not give full capacity until they have had a deep discharge. This may be more to do with the controller chips than the chemistry so may only apply to certain devices (e.g. laptop batteries).

Keith.
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Old Sep 8, 2006, 4:05 AM   #4
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I always on buying a battery fully charge it and discharge it at least twice as advised in the manual. LI batteries are not thoughsupposed to have a memory and after three years the original battery in the D70 performs as well as ever. The D2X (which I use much more frequently than the other) is still capable of over 3,000 shots per charge and I wonder why I ever bought a spare battery for it since it has never been used.
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Old Sep 8, 2006, 11:56 AM   #5
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LI batteries do not have the memory problem, and you can normally charge them when ever you like (the first few cycles, it is a good idea to run them down).

HOWEVER, the charger that comes with the D70 is not very good. It does not monitor the charge to the battery - it only works as a timer. Therefor, that charger can fry your battery because it is treating your battery as if it were fully depleted.

Darrell
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Old Sep 9, 2006, 7:19 PM   #6
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I would like to thank everyone who replied to my question!
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Old Sep 9, 2006, 10:43 PM   #7
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cameranserai wrote:
Quote:
I always on buying a battery fully charge it and discharge it at least twice as advised in the manual. LI batteries are not thoughsupposed to have a memory and after three years the original battery in the D70 performs as well as ever. The D2X (which I use much more frequently than the other) is still capable of over 3,000 shots per charge and I wonder why I ever bought a spare battery for it since it has never been used.

Is that with the built-in flash, frequent use of lcd? I'm looking at a dSLR in the next 6 months and want a battery grip that can take AA just in case both batteries run out.

How long do these battery chargers take and what kind of aftermarket chargers are there?
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Old Sep 10, 2006, 2:56 AM   #8
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I can't help you much here I'm afraid since I use the D2X most of the time but AA batteries won't last long in a DSLR anyway so won't be much use no matter what make you buy. They are a last resort solution and even in a P&S they don't last long. Far better buy an extra battery for the camera from Ebay.
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Old Sep 12, 2006, 8:35 PM   #9
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Read what Ken Rockwell has to say about charging Lithium Ion Batteries

http://www.kenrockwell.com/tech/battery-life.htm

I have a battery grip on my D200, I charge the depleted battery after a days shoot (not fully discharged) and swap the batteries around so as to get even useage.

TD
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Old Sep 12, 2006, 11:24 PM   #10
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I have a P&S and the AA last a long time unless I take a lot of flash photography.
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