Has your car battery just stopped working right after the warranty period? Well I've had that experience happened to me twice using TRACK batteries. I wasn't going to let it happen the third time. From my experience the maintenance free Rocket batteries work really good. I've been running mine for about 2 and half years now without any problem. This is not a paid ad and I don't have any affiliations with Rocket. I'm just helping someone out there in Trinidad and Tobago that's willing to listen.