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Old Mar 8, 2005, 9:38 AM   #1
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I have 3 new LI-Ion batteries for my KM A200, 1xNP800 and 2xEN-EL1.

This website listed belowprovides an overwhelming detail of information concerning Li-Ion batteries and those parts which I read are very interesting in an academic way.

www.buchmann.ca

I am looking for answers to some very basic questions and although I don't expect sharp answers to each, I would appreciate any guidance which might help: Here goes:

1. Should I recharge each battery to max immediately after use or leave it for recharge immediately before the next use?

2. Should I rotate between all three batteries or store one away for later and rotate using two batteries?

3. The article above indicates that a battery should be stored at 40% capacity. How can I measure the charge level without purchasing very expensive professional equipment? I have a standard multimeter available as well as a standard battery checker (for AA, AAA and other alkeline batteries).

4. How can I build a portable power supply or charger to work from standard alkeline batteries. I have built a small external power pack for my digital wallet and it works from a single 9v square battery and it works great.

5. Is it preferable to swap batteries in the A200 when the indicator notifies me that they are close to exhaustion, or should I let the battery exhaust completely?



Maurice
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Old Apr 17, 2005, 5:31 PM   #2
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1. Should I recharge each battery to max immediately after use or leave it for recharge immediately before the next use?
- with LiIon it is not that critical. To be sure you have a full battery when you need, recharge immediately.

2. Should I rotate between all three batteries or store one away for later and rotate using two batteries?
- LiIon life is limited to about 300 cycles and 2-3 years. If you store the unused ones in the refrigerator in a plastic bag they will keep longer as replacements.

3. The article above indicates that a battery should be stored at 40% capacity. How can I measure the charge level without purchasing very expensive professional equipment?
- See how long it takes to charge fully from empty - then charge it for 40% of the time.

5. Is it preferable to swap batteries in the A200 when the indicator notifies me that they are close to exhaustion, or should I let the battery exhaust completely?
- LiIon will last longer if you do not discharge them fully., so recharge as soon as possible (there is NO memry effect)


Mike Sydney Australia
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