The launch of the new iPad has meant a score of controversies and lawsuits for Apple.

Fan forums are buzzing with comments and arguments over glitches like the overcharging of the battery, poor Wi-Fi signal reception and overheating of the device.

Of these problems, the first one - overcharging of the battery - occurs when the device continues to charge for up to an hour, even after the battery indicator reaches 100 percent.

The Cupertino-based company promised a battery life of 10 hours, on a single charge, despite the device having a new Retina Display and a power-hungry quad-core graphics system onboard.

One of the key notable points with battery charging is the trickle charge concept introduced on all iOS devices, wherein the battery continues to charge even after reaching 100 percent charge levels in order to optimise the charge, compensating for trickle charge/discharge cycles.

"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.

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

Tchao asserts that a 10-hour battery life on the new iPad is a given, regardless of when the user unplugs the device in that trickle charge/discharge cycle. He further states that Apple intentionally displays the battery level at 100% throughout that cycle, so as to not confuse consumers into thinking their device is not completing charging correctly.

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