Using the Milwaukee 2353 - 20 M12 TRUEVIEW LED Spotlight is easy. First, make sure the M12 REDLITHIUM XC 4.0 Battery Pack is properly inserted. Then, you can choose from three light output modes by using the mode button. High mode is great for long - distance viewing, low mode gives you more clarity up close, and strobe mode is for safety situations. When using it, avoid dropping it as it's impact - resistant but a big fall could still cause damage. Also, although it's moisture - resistant, don't submerge it in water. To maintain it, keep it clean and dry. After use, remove the battery pack and store it in a cool, dry place. This way, your spotlight will keep working well for a long time.