I'm pleasantly surprised by how much better electronic devices work when they're fully charged.  This is especially true with devices that send radio signals, such as Bluetooth earpieces and FM transmitters.  Last week, my Bluetooth thingy was all static-y and crappy.  After I charged it, it worked like it was powered by a nuclear reactor designed by God himself (which I would suspect would be quite powerful indeed).  Electronic devices should really tell you these kinds of things.  There'd be more faith in technology if people understood how much radio transmission signal quality is related to power. #technology