I have the Hercules brussless with 8am battery i use for roots and small trees off even with the ground.All i use is the Diablo blades,woorks great.you don`t want a chain saw blade hitting the ground.
Harbor Freight had the Hercules 1/2 inch compact for free if you buy 5 amp battery and charger for 100 bucks.I got this deal and i like it a lot.I use it for lug nuts and removing lawn mower blades and fly wheels.