Using the DeWalt DCB606 battery is a breeze. Just insert it into your compatible tool, and it'll adjust the voltage automatically. When you're done using the tool, remove the battery and store it in a cool, dry place. Don't expose it to extreme temperatures or moisture. To keep it in good shape, charge it regularly, even if you don't use it often. If you notice any issues with the LED State of Charge Display, or if the battery doesn't seem to hold a charge, it might be time to get it checked out.