Using the DeWalt DCF850E1 is a breeze. First, charge the battery fully before the first use. Once charged, insert it into the impact driver. You can choose from three speed settings using the variable speed trigger. For small tasks or when you need more precision, use a lower speed. For driving large - diameter screws, switch to a higher speed. When working in a dim area, turn on the 3 - LED work light to brighten up your workspace. As for maintenance, keep the tool clean. After each use, wipe it down with a dry cloth. Store the battery in a cool, dry place. Avoid dropping the tool or the battery as it can damage them. If you notice any problems with the tool or battery, stop using it immediately and contact DeWalt customer service.
