I see at the back of the manual a list of changes for the various versions of the arrow up to the 3G. But is there a newer version of the manual that lists the technical improvements to the 4G?
Also, that manual says the battery charging time is affected by the supply current of the USB connector used. And that if the computer with the USB connector supplies less than 500mA, it could take longer to charge. My question therefore is, is it safe to plug the Arrow into the USB power adapter that Apple ships with its iPad? That adapter can supply 2.1A. And even if the Arrow only requires 500 mA, that iPad USB power adapter would guarantee that level of output. the other benefit to a USB power adapter for an iPad is portability.