Apple Answers Questions Regarding New iPad Charging Beyond 100% Mark

There has been a lot of speculation and questions surrounding the batteries in iOS devices starting with the low-capacity battery in the iPhone 4S, an issue that has since been rectified, overheating of the new iPad’s battery and also the universal notion that the new iPad continues to charge up to an hour after displaying a 100% battery level. As to why that was happening, people didn’t know. Apple’s own Michael Tchao answers.

AllThingsD has spoken to Michael Tchao about the recent anger regarding a supposed mis-display with the new iPad showing a 100% charged battery when the battery hasn’t completely recharged quite yet. He notes that it’s simply an additional feature that makes iOS superior to other operating systems (ahem, ahem Android…). Tchao says it’s part of the trickle charge feature:

So, here’s how things work: 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.

Doing so allows devices to maintain an optimum charge, Apple VP Michael Tchao told AllThingsD today.

“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.”

Tchao also mentions that users can still expect a 10-hour battery life with their new iPads regardless of whether or not they unplug their devices when it’s within that charge & trickle charge cycle. Apple have intentionally displayed the device battery at 100% at this time to prevent the fear that iOS devices are having trouble completely charging.