In my limited experience electric tools have rarely been better than their gasoline or pneumatic versions.
This has been true of lawn mowers, string trimmers, drills, and many other things that I have tried out in the past.
However, after watching these videos by Taras Kul (aka. The Crazy Russian Hacker) I have realized that technology has improved a great deal over the last decade or so.
In the first video he compares a 16" gasoline chainsaw to a 16" electric chainsaw and then in the second video he puts the electric chainsaw to the test cutting up a fallen Black Locust tree.
I was completely surprised by the performance of the battery powered electric chainsaw and I think you will be too!
Check out both videos below and don't forget to let me hear what you thought about this chainsaw in the comments section.