Using your Milwaukee 2402 - 22 screwdriver is easy. First, insert the M12™ REDLITHIUM™ 2.0 battery into the tool. You can then select the appropriate speed for your task. The 0 - 450 RPM is great for precision work, while the 0 - 1700 RPM is for faster, more heavy - duty jobs. When using the tool, make sure the bit is properly inserted and secured. As for maintenance, keep the tool clean after each use. Wipe it down with a dry cloth to remove any dust or debris. Also, check the battery regularly. If the on - board fuel gauge shows a low charge, use the charger to recharge the battery. Don't overcharge the battery as it may reduce its lifespan. Store the tool in the provided carrying case in a dry place to protect it from damage.