Using your Makita XT297T combo kit is easy. First, make sure the batteries are fully charged using the included charger. It takes about 45 minutes to charge the 5.0Ah batteries. For the hammer drill, select the appropriate speed (0 - 550 or 0 - 2,100 RPM) based on your task. If you're drilling into masonry, the high - speed and high - BPM setting will work great. Just insert your drill bit into the all - metal ½” self - ratcheting chuck and start drilling. The LED lights will help you see in dark areas. When using the impact driver, choose one of the 4 - speed power selections. The Assist Mode is handy when you're starting to drive a screw, as it helps prevent issues. The Tightening Modes are useful for different types of metal. Now, for the important stuff. Don't use these tools in wet conditions more than necessary, even though they have XPT™ protection. Keep them away from extreme heat or cold. After each use, clean the tools with a dry cloth to remove dust and debris. Store the batteries in a cool, dry place. And remember, if you're using batteries with the star symbol, they have Star Protection to keep things running smoothly. Enjoy your powerful Makita tools!