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"Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm
by brown9-2 16y ago
"Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory.”
I just purchased an iPhone a few days ago and I feel like I received and read the complete opposite advice from somewhere bcan someone more knowledgeable than me set me straight?
- jakevoytko 16y agoYou are referring to two different memories. The "Memory effect" [0] is a problem with nickel-cadmium batteries that results in lost capacity when they have been partially discharged and recharged. You won't see that in modern cell phone batteries; as far as I know they all use lithium ion batteries. On the other hand, the Apple batteries have circuitry that gives charge information. Supposedly, a complete charge cycle refines its estimates. I couldn't find a mention of this in the online iPhone user manual [1], so I'm not sure how true this is. [0] http://en.wikipedia.org/wiki/Memory_effect http://en.wikipedia.org/wiki/Memory_effect [1] http://manuals.info.apple.com/en/iphone_user_guide.pdf http://manuals.info.apple.com/en/iphone_user_guide.pdf
- bradleyland 16y agoAn execellent resource from Cadex, a company that provides battery testing and analysis equipment: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries http://batteryuniversity.com/learn/article/how_to_prolong_li...