The symbols shown on the batteries have the following meaning: The symbol of the crossed-out wheeled bin means that the battery should not be disposed of with household waste may be. Pb = battery contains more than 0.004% lead by mass Cd = battery contains more than 0.002 percent by mass of cadmium Hg = battery contains more than 0.0005 percent by mass of mercury. Please note the above instructions. The symbols shown on the batteries have the following meaning: The symbol of the crossed-out wheeled bin means that the battery should not be disposed of with household waste Pb = battery contains more than 0.004% lead by mass Cd = battery contains more than 0.002 percent by mass of cadmium Hg = battery contains more than 0.0005 percent by mas.