Morning I told you that the battery the iPad tablet charges for another two hours even though iOS tells us that it is fully charged and that Apple would have said that excessive charging would be harmful to the battery's longevity. For now, detailed explanations for the second statement do not exist, but we do have them an explanation for the reason that iOS tells us that the iPad tablet is fully charged when in reality it is not. It seems that the iPad tablet would say that the battery is fully charged when in fact it is only 97% charged and the system is designed that way to protect the battery. Apple leaves a percentage of 3% uncharged to keep the battery "healthy" and it seems that the iOS system was designed this way from the very beginning, but with the iPad 3 the difference is noticeable because the battery is 70% larger than in the iPad 2 .
The battery on the new iPad is huge, with a total charge capacity of a massive 42Wh or measured another way a monstrous 11,666 mAh. A 3 percent safety margin for the iPad 2 battery would be equal to around 210 mAh, while the same safety margin for the new iPad would be equal to 350 mAh.
However, there is something you have to keep in mind when you leave an iPad 3 tablet on charge because when the tablet says that the battery is 100% charged but displays a lightning over the battery, it would only be 90% charged. Only when a cable is displayed over the battery would it be "fully" charged and would offer those almost 10 hours of autonomy for users. If you remove it before that cable is displayed but iOS says that the battery has reached 100%, it is actually only 90% charged and you lose approximately 1.2 hours of autonomy.
A fully charged iPad 3 tablet can work for approximately 11.6 hours and here we are talking about a battery left on charge for another two hours even after iOS says that the battery is fully charged. The whole system is confusing, it is designed to protect the battery and it would be better not to leave the strange devices connected to the outlet because you might have problems in case of use for more than 2 years.
