[countrypuppy4865]

I've only had experience with XS power and I was not very pleased with the life span. In 2011 I purchased my first and it was done in 2012. I bought a new one figuring maybe I got a bad one. It also went out in 2013. So, both batteries each lasted a year. This is on LS1 fuel injected cars, which are more demanding. I have heard good things about Rock batteries, but I have no first hand experience yet. I am interested to hear about some of the more demanding fuel injection combinations using 16v and their thoughts on the best brand battery and any advice on charging etc.