I had a electric lawn mower before and, although l was pleased with the performance of the mower, I was fed up of the cable and the safety aspects. I thought a petrol mower would be too heavy as my wife would also use it.
I have only used it a few times and 1 battery charge is enough to cut our lawns. Also I intend to buy other accessories so 2 batteries is very handy. My wife is very impressed as well because it make light work of a weekly chore.
The only criticism is a flimsy hight adjustment handle.