I have no problems with the grinder but the battery isn't worth 2 cents, it gets hot and everything dies, wait a minute and it repeats itself after a few seconds. You need to stop and let it cool down and it won't take long. Not worth the money. And I said it's just around the house, just imagine what it would be like on a construction site. So I'm looking for a better battery than the one that comes with it. upset