Using the DeWalt DCB606-2 battery pack is easy. First, make sure the battery is fully charged before use. Simply insert the battery into the compatible tool, and it will automatically adjust the voltage according to the tool's needs. When the LED state - of - charge display shows low power, it's time to recharge. For maintenance, keep the battery clean and dry. Avoid exposing it to extreme temperatures. If you don't use the battery for a long time, store it in a cool, dry place. And always use the appropriate charger for charging to ensure the battery's lifespan and performance.