Does it come with a battery and charger?

It is sold both as a bare tool and in kits with a battery and charger, so check which version you are buying. The bare tool needs an EGO 56V pack you already own.

How long does the battery last?

Expect a modest number of cuts per charge in hardwood and longer runs in softwood or limbing. Runtime depends heavily on which Ah pack you use.

Is it as powerful as a gas chainsaw?

It compares to a small homeowner gas saw, not a pro saw. It handles firewood and storm cleanup well but is not built for felling large timber all day.

What bar and chain does it use?

It uses a 20-inch bar with a standard 3/8-inch low-profile chain, and the tensioner is tool-free. Replacement bars and chains are widely available.

Can I use other EGO 56V batteries in it?

Yes. Any EGO 56V ARC Lithium pack fits, and larger packs give longer runtime at more weight.

Is it safe for a first-time chainsaw user?

It has a chain brake and instant stop when you release the trigger, but a 20-inch bar is a lot of saw for a beginner. Consider a smaller saw or training first.