Using your DeWalt DCS389X2 reciprocating saw is easy. First, charge the DCB609 FLEXVOLT 9.0Ah batteries fully using the included charger. Then, insert a battery into the saw. Attach the blade properly according to the markings on the saw. You can start cutting by pressing the trigger. Adjust the speed according to the material you're cutting. Remember to wear safety goggles and gloves. When not in use, store the saw in the kit bag. Keep the batteries in a cool, dry place. Periodically clean the saw with a dry cloth to remove dust and debris. Check the blade regularly for wear and replace it when it gets dull.