Bests & Worsts Reviews from Amazon

I really wanted this to work as advertised and be better than a gas mower. I set out on a lovely Saturday morning to cut the grass. It all went fine until it didn't. The batteries provided are pretty worthless in terms of capacity; I'm attaching two pictures to show how much grass got cut on one and then the second battery (both fully charged -- the length of the front yard is about 80'). At the current rate, I expect to be done with my yard sometime Sunday. The deck is also not parallel to the ground based on the rear wheel height (there is one lever for all wheels) so the front will always cut a little lower than the rear, which wouldn't be such a problem except the max height on the wheels is a good 1-2" lower than my gas mower. I suspect this may have contributed to the horrible performance time but not significantly. Will be contacting Amazon for a return; with the exception of the terrible battery life I enjoyed the mower for the 30 minutes I was able to. --UPDATE-- Gave it another try and since I was paying attention this time, can provide more detail. Batteries: The batteries lasted 10 minutes and 6 minutes, respectively, from full-charge. I suspect that the real problem is that they over-heat so quickly as the 6-minute battery still had 2 bars left when the mower stopped. Design flaw (it was 79 degrees today while 84 degrees last week). With the slightly cooler temperature I was able to double the amount of lawn cut (whole front yard!) Mower power: There is a "mulching option" (plug all the openings) but this mower is under-powered to actually mulch the cut grass; it largely just sits on top of the lawn and turns brown which makes the yard look like crap. Over-all: If you have a small yard and like to bag your grass and have some extra money to throw at the problem, this is for you. While I certainly appreciate the aspect of carbon-neutral living (have a nice solar array) this mower is too underwhelming to replace my nice gas mower. Back to Amazon you go....