Using the Milwaukee 2401-22 M12 Lithium-Ion 12V 1/4 Hex Screwdriver Kit is a breeze. First, insert a fully - charged 12V Li - Ion battery into the tool. You can use the quick bit - loading 1/4' hex chuck to insert your desired bit with just one hand. Then, adjust the clutch settings according to your task. Use the variable speed trigger to control how much power the screwdriver uses. The built - in LED will help you work in dark areas. When you're done, place the tool and all its accessories in the compact driver storage bag. For maintenance, keep the metal gear housing clean. Wipe it down after each use. Don't overcharge the batteries, and always store them in a cool, dry place. If you notice any issues with the battery fuel gauge or other features, contact customer support.