Quote:
Originally Posted by dhbailey
Thanks for setting me straight -- there is still a finite number of recharge cycles but it's good to know that doing a partial charge isn't use a complete one of those cycles, so recharging one bar a week or once a month for all 4 bars makes no difference.
Now, has anybody read anywhere how many recharge cycles the Sony Reader battery can handle?
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That's not perfectly accurate either. The number of charge cycles quoted by a manufacturer is really more about them trying to describe the complexities of how a battery ages to consumers without a deep technical background.
Lithium Ion batteries definitely age better with more frequent, shallow discharge/charge cycles vs. fewer complete discharge/charge cycles. For example, your Lithium Ion battery will be in better shape, with more capacity after 600 charges at two bars vs. 300 charges at 0 bars.
Nickel Cadmium batteries were just the opposite. Shallow discharges resulted in the memory effect, which could be reversed to some degree, but definitely left you with less capacity than full discharges did.
I miss NiCads. They would last forever when treated right and had great shelf life. LIons have great capacity/weight, but they literally start aging immediately after manufacture. You leave one on the shelf and it will die there. Independent of deep discharge into cell reversal.