I use the Greenworks line of tools. It's about as powerful as the gas Stihl I've used previously. The key was to use the larger battery that the lawnmower uses

I use the Greenworks line of tools. It's about as powerful as the gas Stihl I've used previously. The key was to use the larger battery that the lawnmower uses instead of the smaller one. It's a little heavier, but lasts quite a while. The only challenge is the recharge time is not as fast as topping up the tank.