Everyone seems to love finding chinks in the armour of a much-hyped new device. Sometimes there are genuine widespread faults, others are merely quirks of design and within “operational expectations” or words to that effect. The latest is the new iPad and its battery.
With Apple’s new third-gen iPad, the first grumblings were about it getting slightly warmer than the iPad 2. This was quickly exaggerated by some people as “overheating”, if your idea of overheating is about as hot as a mug of lukewarm tea.
Now tech analysts at DisplayMate have identified possibly strange behaviour with the iPad’s battery charging, saying that it carries on charging for an hour even when the display reads 100%.
Now, with The Apprentice back on our screens at the moment, it would be easy to jump to the conclusion that the iPad battery can somehow give you 110%. What’s more likely is that it’s only about 90% full when the display says it’s done. So if you want to be sure of absolute maximum charge, keep it plugged in a while longer.
According to AllThingsD, all iOS devices show a 100% charge just before finishing, then they continue until completely full, then if still plugged in they will discharge a little and charge back up to 100%.
Apple vice president Michael Tchao told the site, “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 there you have it. It’s not a mistake, it’s a feature. And while it could be slightly confusing or misleading even, it appears to be there to protect the battery from overcharging.
The new iPad battery has a much higher capacity than its predecessor (11,666mAh compared to 6944mAh) but it also takes substantially longer to recharge. At least the resulting battery life is still decent at about 10 hours, depending on what you’re using it for.