Apple iPad trademarked the United States last Saturday, which helped to finally open the shelf to see what is hidden inside the product, especially the battery and the USB controller.

Great thin battery
The first thing you notice is the care that Apple has put into the design of the bowels of the iPad. Both batteries are impressive. As thick as those found in an iPhone 3G, they have an impressive area. Its constitution allows a better dissipation of heat generated by the cells and that it be placed on ingredients adds a layer of protection. Weighing 148 grams, this model is 3.74 V, 24.8 Wh supposed to offer a range of 10 hours. Both batteries are finally separated to allow the antenna Wi-Fi through the middle of the device thereby improving the signal reception.

A USB 10W
Another interesting detail is the USB controller is a model manufactured by Foxlink 10W. This means that the power supply provided with the tablet wall and uses a USB port to connect to the device provides 10 W to the iPad. This also means that the new Apple product can not be recharged from any USB ports. Indeed, it will enable them to provide more than 500mA or as specified by USB 2.0, only the bus called 'high voltage' can do.

In April 2009, the USB standards have been updated to allow some USB ports provide more power in order to recharge devices more applicants. Apple seems to take advantage of these new standards and also shows that prepares the release of the iPad for years.

Indeed, the iPad will be charged, when in operation, only the MacBook Pro in recent years and some hubs powered by mains electricity, but not a majority of PCs and MacBook older. This reflects the fact that these ports are capable of high voltages over 5 V and 500 mA for conventional provide 1 200 mA and 12 V.

Prefer the iPad connect to an AC outlet

To power the tablet on ports providing less energy, it will extinguish. In any case, Apple warns that the charge iPad a USB port takes longer than when you plug the device on the power supply provided. The timing should work against whatever the configuration of your machine and initial tests suggest quipped plugged into a USB port traditional draws enough power to not need to use the battery. So even if you can not recharge, it does not empty.