That's my "raggedy door" on my barn, he's sawing through, and yes it was weak as hell. What the vid didn't show was the 8" or so thick, hardwood log it sawed through along with about an hour's worth of sawing up other things, just before attacking that door. I'm sure it wouldn't have been quite as weak with a fully charged battery. Still it was fun, and that's all we were after.
BTW that's also me on the right, with the other one I mounted on my Saiga-12 like a bayo.