Quote:
Originally Posted by danskmacabre
How is that calculated?
From what I have read you can get 500-800 charges out of a Lithium battery.
If you have to recharge your ereader say every 2 weeks (about how often I have to recharge my Kobo Touch), that means it should last for (base it on the lower 500 charges end) that's theoretically 18 years..
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No, there are two factors at work.
1. As you rightly say, there is a factor of the number of charge cycles.
But...
2. A Lithium battery also has a natural lifespan of about 5 years regardless of how often it is or isn't charged. The clock starts ticking when the battery is first charged, and nothing will halt it.
For a laptop, which is charged daily, factor 1 generally outweighs factor 2, but for an eInk reader, factor 2 completely dominates. Your battery almost certainly WILL die in about 5 years, regardless of how little or how often you recharge it.