Using the DeWalt DCN890P2 Cordless Concrete Nailer Kit is easy. First, charge the DCB205 5.0Ah batteries with the DCB115 Charger. Then, insert a charged battery into the nailer. Load the magazine with DEWALT Cordless Concrete Nailer Pins (1/2 in. - 2 - 1/4 in.). Adjust the variable power settings according to the type of substrate you're working on. When nailing, make sure the work surface is clean and stable. The LED worklights will help you see better in low - light areas. If you encounter a jam, use the tool - free jam - clearing feature to fix it quickly. For maintenance, keep the nailer clean after each use. Wipe it down with a dry cloth. Check the driver blade regularly and replace it if it's damaged. Also, store the nailer in the provided kitbox when not in use to protect it from dust and damage. Remember, this nailer is only for use with DEWALT Cordless Concrete Nailer Fasteners (PINS). Don't try to use other types of fasteners as it may damage the tool.