Since it was launched, people have been complaining that the new iPad doesn't charge properly, reporting that the device isn't fully charged even when it claims to be. Apple has now responded, stating that this is actually on purpose.
All Things D reports that Apple broke it down for them: The iPad displays that it is 100 per cent charged before it is. At that point, it continues to charge to capacity, before dishcarging a little, and then charges back up to 100 per cent again. Speaking to All Things D, Apple VP Michael Tchao explains:
"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."
So while the trick has only surfaced now, it's apparently something we've been living with for years. Tchao also reassures users that the percentage differences involved are small, so any difference has a minimal impact on battery life.
While it might sound like a cop-out, it's probably accurate. These days, batteries are complex things, which use microprocessors to control their charging. Back in the good ol'days, a charging analogy based on pouring ions into a cup was about right. These days, you probably need an electrical engineering degree to actually understand the process of charging a fancy battery. As Yankee Group analyst Carl Howe told All Things D:
"[W]e shouldn't apply our prejudices formed (both good and bad) from older generations of battery technology to today's systems... If it says it's charged, consumers should assume it is, and not worry about whether the charger is drawing current."
So, in other words, quit worrying about whether your iPad has charging issues or not. It probably knows better than you. [All Things D]