Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not as expected

I have used this mower about 2-3 times. The battery charge lasts about 45 minutes before it goes into yellow region of charge indicator (time to recharge). When cutting grass, the mower leaves some larger blades of grass partially uncut and you have to go back and recut the grass. This is not a big problem if you have a small yard but with a larger yard it can be very frustrating. This problem may be due to the narrow blade on the cordless mower which is much narrower than my gas mower. I have gone back to using my gas mower for most of my mowing since it doesn't choke down nearly as often and I don't have to deal with recharging after 45 min. or going back and recutting grass.