This thing is a BEAST! I was not expecting too much with a cordless mower. First cut of the season, grass is long and thick. Powers through it like a champ, even on the mulch setting. I gave it a break by setting it to the tallest hight setting, and mowed over again on second lowest in the back yard where grass was tallest, but front yard got second lowest, mulching and worked great. I didn't baby it with half-width passes, either. Gave me the same power I would expect with a gas mower, even chewed through a couple small twigs I missed. "No power loss" battery is not an exaggeration, it works full power until the battery is dead, then it stops completely. I could hear it bogging down a little in the thick grass, but I just lifted it slightly off the ground at the end of a pass and let the blades shake off the grass and it worked fine. Bag is bigger than I expected, too. I would estimate it holds about 3 cubic feet of clippings. Handle does a double fold down so it becomes very compact for storage, not much bigger than the body of the mower itself. Light and easy, whole thing weighs about 35lbs. I can push it with one hand; and it's about as loud as a vacuum.
Battery powered, so you need to recharge or swap out before the job is done. I got about 60% through front of a medium yard on the first charge. Battery takes about 20-30 minutes to cool down and then about 1:45-2 hours to charge. Second charge gave me much more time though (about 40 minutes first charge to about an hour on the second). Keep in mind this is on the first cut of the season in Texas, where the grass has been growing for a couple months already. I have full confidence I will be able to cut the full yard with power to spare next week on one recharge. Needless to say, I ordered a second battery the first day.
Blade doesn't reach the edge of the housing. 16" blade sits in about a 20" housing, so it leaves a couple inches by the fence. This is fine if you have a trimmer, but I don't yet. If you look at a picture, blade reaches about where the green part of the housing ends on each side. The front of the housing also extends a ways over the blade, so you can't push up to a border, you have to go alongside it. This can be a problem on inside corners.
All in all, I am very happy with my purchase. I knew what I was in for with battery life, it actually lasted longer than I expected. I opted to pay more for a cordless for convenience (no cord to hassle with, no gas filling or fumes), and I can store it inside with no smell. I got it for about $100 less at Sears, and got a reconditioned second battery for $109 from CPO Outlets (new retail: about $150). One star lost for the housing being bigger than the blade. I estimate that it will take about a season to break even since I don't have to pay someone $20 a week to mow. I can buy a trimmer that uses the same battery for about $60.