Was in the middle of cutting my lawn when the mower suddenly cut off and started beeping. Replaced the battery with a freshly charged one and the problem persisted. I've only used the mower twice and it's been great until this happened. The mower was only 2 weeks old so I exchanged it for another and finished cutting my lawn. The people at Lowe's were very friendly and quick to exchange it so I could get back home and finish. The gentleman working in the lawn and garden department said he has never heard of this problem before. Maybe it was just a fluke. (Sorry for the vertical video, working with one hand was a little difficult)