Apple Explains Why iOS Devices Keep Charging After They Reach 100%

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Posted March 27, 2012 at 6:29pm by Shalom Levytam

Apple has confirmed earlier reports that iOS devices continue charging after reporting a full 100% charge.

AllThingsD follows up a report from CNBC which revealed that when the battery indicator reads 100%, it's actually full enough to give you Apple's promised battery life.

Apple does in fact display the iPad (and iPhone and iPod Touch) as 100 percent charged just before a device reaches a completely charged state. At that point, it will continue charging to 100 percent, then discharge a bit and charge back up to 100 percent, repeating that process until the device is unplugged.

Apple VP Michael Tchao told AllThingsD that doing this allows iOS devices to maintain an optimum charge.

"That circuitry is designed so you can keep your device plugged in as long as you would like," Tchao said. "It's a great feature that's always been in iOS."

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Apple Explains Why iOS Devices Keep Charging After They Reach 100%

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Stefan - March 29, 2012 at 10:21am

You are charging it wrong !

Idiots - March 28, 2012 at 5:42pm

They said ios not osx

asaf - March 28, 2012 at 12:38am

If the technology was so hi tech and smart why would a two year old macbook battery swell and apple charge me to replace because they say I charged it too much....Right!

noe - March 27, 2012 at 8:14pm

"That circuitry is designed so you can keep your device plugged in as long as you would like," Tchao said. "It's a great feature that's always been in iOS." This prove that Apple is the best! What a feature, just like my 10 years old laptop that is plugged constantly :)))

gil - March 27, 2012 at 6:51pm

but why 90% of the time when i unpluged my iphone 4s my battery is on 99% full???

1%er - March 27, 2012 at 7:02pm

That one percentage point should have been used for a grammar check.