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<blockquote data-quote="technologist" data-source="post: 47338" data-attributes="member: 4134">A physical property called &quot;internal resistance,&quot; for one.This happens to all batteries when they're not used. Leave a battery on a shelf or in a kitchen drawer long enough, and it'll lose power and eventually go dead. Rechargeables do this more quickly than, say, a pack of AAs, though. Being kept in a toasty warm iBook bay doesn't help any, either.When the battery hits 95% charge, the iBook will automatically charge it back to full again. (Recharging over every little percentage point would wear the battery out more.) If you find that your battery never, ever reaches 100%, though, you might want to calibrate. More info at <a href="http://www.apple.com/batteries/notebooks.html" target="_blank">http://www.apple.com/batteries/notebooks.html</a>&nbsp;and <a href="http://docs.info.apple.com/article.html?artnum=86284" target="_blank">http://docs.info.apple.com/article.html?artnum=86284</a></blockquote>

[QUOTE="technologist, post: 47338, member: 4134"] A physical property called "internal resistance," for one. This happens to all batteries when they're not used. Leave a battery on a shelf or in a kitchen drawer long enough, and it'll lose power and eventually go dead. Rechargeables do this more quickly than, say, a pack of AAs, though. Being kept in a toasty warm iBook bay doesn't help any, either. When the battery hits 95% charge, the iBook will automatically charge it back to full again. (Recharging over every little percentage point would wear the battery out more.) If you find that your battery never, ever reaches 100%, though, you might want to calibrate. More info at [url]http://www.apple.com/batteries/notebooks.html[/url] and [url]http://docs.info.apple.com/article.html?artnum=86284[/url] [/QUOTE]

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