The batteries are horrible! If they do charge they do not last over a couple of hours. The stems are very flimsy,my dogs knock them over. If I had not kept them over 30 days they would be returned. Buy electric ones you will be more satisfied. I even checked on replacing the batteries. I will probably throw them in the trash,the batteries cost more than the light set. So you might figure out if the replacement batteries cost that much ,what grade they use for this set!