Using your Milwaukee 2559 - 21 M12 FUEL 1/4 Extended Reach Ratchet is easy. First, charge the M12 12 - Volt Lithium - Ion 2.0 Ah Compact Battery using the included charging station. Once charged, insert the battery into the ratchet. You can then use the ratchet to tighten or loosen fasteners in tight spaces. The extended neck helps you reach areas that are difficult to access. When using the ratchet, don't overload it. The REDLINK PLUS™ Intelligence will protect the tool and battery from overloading and overheating, but it's still a good idea to use it within its recommended limits. For maintenance, keep the ratchet clean. After use, wipe it down with a dry cloth. Periodically, check the battery for any signs of damage. If you notice any issues with the ratchet, such as a loss of power or strange noises, stop using it and have it inspected by a professional.