How good is the Toro E-cycler cordless mower?

I am thinking of getting the Toro cordless mower and worried about how it cuts thick grass. My yard has thick grass and it has a lot of moisture. I am curious how dose this mower do by it being cordless? Also if not this mower how about the Toro gas mowers like the ones with the pace self propelled systems with either electric start or blade brakes? thank you