Using the Milwaukee M18 ROVER Dual Power Flood Light 2366 - 20 is easy. First, choose your power source: you can either insert an M18™ REDLITHIUM™ Battery or plug it into an extension cord. Once powered, select one of the three output modes according to how bright you need the light and how long you want it to run. You can rotate the light head up to 120° to aim the light where you need it. If you want to hang it overhead, use the integrated keyholes. When it comes to maintenance, keep it clean and dry. Since it has an IP54 rating, it can handle some dust and water, but try to avoid long - term exposure to harsh weather conditions. Also, follow the instructions for battery charging and replacement. If you have any issues, refer to the 5 - year tool and limited lifetime LED warranty for support.