Thanks 1-PD.The only reason why I asked was that a lot of members have been helping me out with inform, and a lot have said Calcium battery only. So I just wanted to make sure that my next battery buy was the right one. If you have ran your's for the last 3 years and RichieST along with others have said a Bosch are good battery's. Then that is the one I will go for, and hopefully that will end this nightmare of problem I have, thanks to you and the other member for your help Paul.