Using this Dewalt power tool combo kit is a breeze. First, charge the included batteries fully before your first use. When using the hammer drill, select the appropriate speed on the two - speed transmission according to your task. The LED light will help you see what you're doing in dark areas. Just press the trigger, and the 20 - second delay on the LED light will keep the area illuminated even after you release it. For the impact driver, it's great for driving screws quickly. Its high torque can handle tough jobs. When not in use, store your tools in the soft - sided storage bag. The exterior and interior pockets are there to keep your bits and other accessories organized. Make sure to keep the bag clean and dry to protect your tools. Also, avoid overcharging the batteries. If you notice any strange noises or performance issues with the tools, stop using them immediately and contact Dewalt customer service.