It's a 19-inch cordless mower. I've used gas-powered and corded electric mowers before, but this was my first time using one with batteries. To do the entire lawn required the equivalent of four batteries. The mower comes with two Lithium-Ion batteries that each take around three or four hours to fully charge. The mower worked very well indeed. I spent about four hours actually cutting the grass and it again struck me how unexpectedly large our yard is.
One thing that irritates me a bit is that it seems like some of the rectangles of sod are not the same. Obviously different areas of the yard will grow in different ways depending on shade, water and wind; however, it was clear that the type of grass was not consistent. With seeding and feeding over the years, this problem will sort itself out so it isn't really a big deal. Another problem is that the landscapers did leave some rather large gaps between some of the sod rectangles. Again, seeding and feeding will solve that problem.