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Battery question

I hear that in Japan there is a Lithium Ion battery that does not discharge (at least it takes many years). How is this possible, and is this even possible? I read about this battery on the web somewhere, but cannot cite the source at this time.

If this technology were implimented here, then this would radically change the PDA/cell phone industry.

Thanks,

John

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If more and more people complained to the authorities about Steve Walz then he may get the justice or the mental help he so desperately cries out for!

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John
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err No. You are probably referring to a cell that has a low "self discharge" rate. Most batteries loose their charge over time even when not used. .

Alkaline batteries have a shelf life of about 5 years (eg approximately 90% capacity remaining after five years "on the shelf")

Lithium batteries have a very long shelf life - 90% full after 10 years.

Nickel Cadmium cells have a short shelf life - 90% full after 24 hours!.

Nickel Metal Hydride cells can be even worse than Nicad I believe.

Reply to
CWatters
[snip]

I agree pretty much here, but

Not in my experience, they seem to hold up quite well, until end-of-life, where they will dive nose in hours.

...Jim Thompson

-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | |

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| 1962 | I love to cook with wine. Sometimes I even put it in the food.

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Jim Thompson

This is why my digital camera still uses Lithiums and wont downgrade to rechargeables.

John

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If more and more people complained to the authorities about Steve Walz then he may get the justice or the mental help he so desperately cries out for!

Reply to
John

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