I had almost the same problem with my battery, but that was because I was blind or stupid, I am trying to find this out. To be honest, I had to charge my battery from time to time, and I used for that my battery charging station in my house. But for two or three times, the battery burned, and I have to spend another hundred of bucks to buy a new one. I thought it might come out from my charger, but I was wrong. The answer was my supplier. I did not know that I can't plug that kind of charger as my supplier can't give me the necessary amount of the energy and that's why I had some power surges that burned my battery and a couple of wires in my house. Well, the only one way to solve this, was to change the supplier, and that's what I did. I used the usave service for that, as a lot friends of mine told me about that, also they told me this is the best service in this field , and I will have not much to do. After that I was able to charge my battery as much as I wanted, and I have never met that issue anymore