Using your Milwaukee M12 FUEL 3/8 - Inch Extended Reach Ratchet is easy. First, make sure your REDLITHIUM™ battery is fully charged. Insert the battery into the ratchet until it clicks into place. Then, find the stubborn fastener you need to work on. Thanks to the extended neck and slim head, you can reach it even in tight spaces. Just align the ratchet with the fastener and start turning. The high - torque output will make the job quicker. When it comes to maintenance, after each use, wipe the ratchet with a clean, dry cloth to remove any dirt or debris. Store it in a cool, dry place. Avoid overloading the tool, as the REDLINK PLUS™ Intelligence is there to protect it, but it's better to use it within its limits. Also, if you notice any unusual noises or performance issues, stop using the tool and check for problems or contact customer support.