Can this cut through a tree trunk?

Only small ones. The 4-inch and 6-inch bars suit branches and logs a few inches across, not full trunks. For anything thicker than about a forearm, use a full-size chainsaw.

How long does a battery last?

Expect short sessions per charge. A 2.0Ah pack handles light pruning and a handful of small logs, then needs a swap. The second battery in the box covers the recharge gap.

Do I need bar and chain oil?

Yes. Check the oil reservoir and the chain tension before each use. Running it dry wears the bar and chain quickly.

The saw body, a 4-inch and a 6-inch bar and chain, two 18V 2.0Ah batteries, and a charger. Check the listing for a carry case and tools.

Is it safe for beginners?

It is easier to handle than a full-size saw, but the chain is still sharp and the saw is light enough to kick back. Wear gloves and eye protection and keep both hands on the tool.

Is it better than a corded electric saw?

For reach and portability, yes. A corded saw gives steadier power for longer jobs. Choose this one for pruning around the yard and cutting away from outlets.