Using the DeWalt DCS369P1 reciprocating saw is easy. First, charge the 20V MAX* 5.0 Ah battery using the included charger. Once the battery is charged, insert it into the saw. You can hold the saw with one hand thanks to its lightweight design. Use the variable - speed trigger to control the speed according to your task. For dark work areas, turn on the LED light. When you need to change the blade, use the tool - free blade release feature. Make sure to wear safety goggles and gloves while using the saw. Store the saw in the included tool bag when not in use. To keep it in good condition, clean the saw after each use and regularly check the blade for wear and tear. If the blade is dull, replace it with one of the spare blades in the kit.