Greenworks 40V 21" Self-Propelled Mower

I rarely write reviews, but this product is so awesome in every way I just have to. I already own lots of battery powered tools and even have a very high-end all electric boat with Lithium batteries for tournament bass fishing so I’m no stranger to battery power. Despite this, I was slightly hesitant to order the 40v model vs. 80 vs. the Lowes exclusive 60. I was only worried about it having enough power and not bogging down in my very thick/dense yard. Worry not. We have a 2+ acre yard so I really got this to mow inside a small fenced pool area vs. using a riding mower and also to trim around some trees. A testimonial to the power of this mower - because I had put down seed with straw blankets on top in spots, i let the entire about 3k sq/ft area grow for several weeks. Most of the area was about 8-12” high. I thought for sure the mower would choke even on the highest (7) height setting. It had no issues at all even at the fastest self propelled speed and only 2 or 3 times even kicked into the auto sensing high power cutting speed. I mowed the area once at height 7 then moved it to 4 and redid it just to get it even shorter. I also used self propelled for a 40 yard walk to/from area including it pulling up a decent hill for half of that as a test. Pros (all super great) -easy 5-10 minute assembly out of box -everything very solidly built, like a “real mower” -powerful multi speed self propelled. Also, this works without starting mower, unlike gas mowers. So you can use it to get to/from job area limiting battery use..... or push it if u want. -very quiet compared to gas. 1/4 - 1/2(max) the noise -battery life? I used 5ah battery to mow that area 2x for about 20 min. Of mowing and use of self propelled. It took 1.5 hours to charge battery so I’d estimate I used at most 50% of battery (they say 4 hrs to fully charge). Calculate that out to estimate of let’s be conservative and just say 40 min. Of run time. With 2 batteries I would think you can mow a 1/8th to 1/4 acre area. -7 easy mowing height adjustments -easy everything ... start, self propelled, instructions, assembly -no gas, oil, dirt, setup time, maintenance.. just walk out get mower, push button, mow -winterize - e.g. gas treatment, run gas out, etc.... nada -grass bagger/bagging great, clean cut -batteries: easy in and out and even are to hold spare. Please ignore all the complaints I see within of people saying the battery is hard to remove once inserted (I.e. that it’s hard to press the release and u need a tool to help with that). Absurd comments unless you have zero wrist strength and your fingers are so big your hand doesn’t fit in a mailbox. -battery can be used in the other green works tools. ( I also,bought the equally awesome blower and trimmer. Trimmer tested with using all my existing Ryobi attachments which is nice if desired.) Con -with thick real thick yard, I would say height adjustment below 3 will drag mower deck in front. (Too low)