Using the DeWalt DCB240 battery is easy. Just insert it into your compatible DeWalt 20V MAX* power tool. Before using a new battery, it's a good idea to fully charge it. You can check the battery level using the fuel gauge LED charge indicator. For safety, always make sure the tool is turned off when inserting or removing the battery. When not in use, store the battery in a cool, dry place. Avoid exposing it to extreme temperatures or moisture. To keep the battery in good condition, charge it regularly, even if you're not using it often. This helps maintain its performance. And remember, it comes with a 3-year limited warranty, so if you have any issues, you can reach out to DeWalt.