I purchased a 19.2 volt set (Saw, Drill light, rip saw and jig saw) approx 4 years ago. In that me i have had to replace the battries ony once. Also since that time I have purchased many other 19.2 volt tools and to this day am able to get batteries for them with no poblems. I have added two bedrooms on to my house as well as building many peices of furniture, and knock on wood, have had no problems.