Before using a cordless lithium battery reciprocating saw, it is necessary to ensure that the tension of the saw blade is appropriate to reduce the shaking during the cutting process.

You can also insert accessories such as other gadgets scrapers and brushes, which chuck into the saw instead of a blade, to take advantage of a recip saw's back-and-forth motion.

Pretty much all reciprocating saws have tool-free blade changing. Some have a single position, some can be set at 90 degrees to the saw, and some have an additional slot for flush cutting.