Using the Milwaukee 2463 - 22 impact wrench is easy. First, insert the battery pack into the tool. Make sure it clicks into place securely. Then, select the right socket for your job and attach it to the 3/8' anvil with the friction ring. Just slide the socket on and it'll stay in place. To start using the wrench, hold the ergonomic handle firmly and press the trigger. You can use it to tighten or loosen fasteners. Remember, this wrench has a lot of torque, so use it carefully, especially on delicate materials. When it comes to charging, use the included charger and plug it into a power source. The battery will take about 30 minutes to charge. The on - board fuel gauge on the battery will show you how much charge is left. For maintenance, keep the tool clean. Wipe it down after each use to remove any dirt or debris. Also, check the impact mechanism regularly for any signs of wear. The tool comes with a 5 - year warranty, so if you have any issues, contact the manufacturer.