Read on for power and cutting duration. This mower was selected because I have a fairly large garden. Circa 250 m2. With this mower I can cut grass in half the time I did with a smaller flymo. This is great. However, my experience is the mower does not give you 800 m2 cutting. I got about 100 m2 on the first cut (fairly long grass - 6 inches in places) using 2x 5A batteries so the first cut took quite some time while I had to recharge the batteries. I did a second cut which was skimming the top and got about 200 m2 with the same batteries. Run time is about 30 minutes. I also bought 2 6a 54v dual volt batteries. The run time was not much improved. Performance appears to be 200 - 250 m2 for 30 min run time. The advertised performance I believe should have given me 2 cuts across my lawn (circa 500m2) easily but it has been the opposite with two sets of batteries and half the distance travelled. [take note Mr Dewalt]. Mower is well built. It is quite heavy. Cut width is great for a mid size garden. Height adjustment easy and the mower coped well with long grass. Grass collection good. You will need to back the mower off if you have grass in the blade area because the bag is full. Easy to clean. Not had to fold down for storage but based on assembly it is quick and easy. Delivery and customer support excellent great help with my questions re batteries and run time.