Are you on the lookout for an electric chainsaw? One you might want to consider is the Black & Decker 40cm GK2240T chainsaw which Black & Decker claim will cut a 30cm log in just 6 seconds. 
One retailer selling the Black + Decker GK2240T is TooledUp who as I write this are including a free spare chain when you purchase it from them. Specifications include:
- 2200 Watt high torque motor
- 40cm bar
- Tool free chain tensioner
- Hard steel spiked bumper
- Electronic soft start
- Integrated auto chain oiling system