Does it come with a battery and charger?

No. It is sold as a tool only, so you need a Greenworks 80V battery and charger. If you already own 80V gear, you can share those packs.

Which battery should I use with it?

It runs on the Greenworks 80V lithium-ion platform. Larger-capacity packs give longer runtime but add weight; the edger is already 16.6 pounds without a battery.

How deep does it edge?

The 8-inch blade sets the cutting depth. It handles normal turf overgrowth along walks and drives; very thick or matted growth may need a second pass.

Is it hard to control?

The curb wheel and adjustable auxiliary handle help keep it tracking straight. The weight is the main thing to get used to, especially on slopes.

How does it compare with a corded edger?

It frees you from extension cords and works far from an outlet, but it is heavier and needs charged batteries. A corded edger is lighter and runs indefinitely but is tied to a cord.