Using the DeWalt DCF809C2 Impact Driver is quite straightforward. First, charge the 20 - Volt Max lithium - ion 1.3 Ah battery packs using the included charger. Once charged, insert the battery into the impact driver. When you're ready to work, hold the driver with the ergonomic handle for a comfortable grip. Use the variable speed trigger to control the speed and precision of the driver, especially on delicate surfaces. The three LED lights will help you see in dark areas. When using it in tight spaces, its 5.1 - inch length will come in handy. For maintenance, keep the tool clean after each use. Wipe it down with a dry cloth to remove dust and debris. Avoid using the tool in wet conditions as it can damage the electrical components. If the tool isn't working properly, check the battery first. Make sure it's fully charged. Also, follow the instructions in the 3 - year limited warranty if you encounter any major issues.