What I wish to emphasize once more (in addition to the other things that have already been mentioned here): The 60D has sometimes problems with battery detection, ie during the registration and the detection of the position (right or left in the grip) and the state of charge - So all that has to do with electronics. The registry does not work right, charge status and position to a time but correctly identified (for best poke the battery and photography. After a while, the camera memorizes the energy consumption and then displays it right.)
The lettering is not quite as bright as on the camera and loses with time Brilianz, but this may be due to the exposed location, where it is located.