We replaced an aged gas mower with this cordless electric one, thinking we were doing the right thing, environment-wise. The first summer it was fine, although it took an overnight recharging and hence two days to cut the lawn, when, with the gas mower we finished to job in 2 hours. But, fine, we rationalized it, saying it was less strenuous, by stretching the job over two days. Summer number 2 - battery dies, because the motor was sucking grass cuttings into the vents, and clogging and overheating. So, replaced battery. New battery somehow is even weaker than the first one, stretching the work over three days, having to recharge overnight twice. And, yes, we plugged it in every second month over the winter. Summer number three - this time some switch needed to be replaced, necessitating a stay in the repair shop of two weeks, while the rain fell and the grass grew. Now, the lawn mower dies out after twenty minutes. Cutting the lawn now takes a week, and then we have to start all over again. At this point, I am prepared to say to heck with the environment! Give me a good old powerful lawn mower that can do the job in one effort and give me the rest of the week to do other things. This lawn mower has proven to be a huge disappointment. If I could rate it with less than 1 star, I would.