Using your Milwaukee M12 Cordless 2 - Tool Combo Drill Kit is a breeze. First, charge the RED LITHIUM™ batteries using the 30 - minute charger that comes with the kit. Once charged, simply slide the battery into the drill driver or impact driver. For the drill driver, adjust the torque settings according to your task. If you're drilling into softwood, a lower torque setting will do. For harder materials like metal, crank it up. The impact driver is great for driving screws quickly. Just place the bit in the chuck, line it up with the screw, and start driving. When you're done using the tools, store them in the contractor bag to keep them organized and protected. Make sure to keep the batteries in a cool, dry place. If the tools get dirty, use a dry cloth to wipe them down. Don't use any harsh chemicals on the tools or batteries as it can damage them. Also, avoid over - charging the batteries. Once they're fully charged, unplug them from the charger.