Instruct: Classify Amazon reviews into positive or negative sentiment
Query: battery problems

Perhaps I didn't dig deep enough in your site, but I can't believe I didn't read any reviews regarding this unit's battery problems. 98% of all the owner experiences I've read are the same, including mine: works great for a few weeks then the battery dies. You need to have a no star category in your ratings. If there's someone out there who's had their machine for some time and it still works great, run right out and buy a lottery ticket. If you bought your last week, hang in there and get back to me.