I run a battery from a place around here called Rocky's Battery. I believe it is either a 660 or 700 CCA. I bought one of these to replace the original one in my truck 3 years ago, when the original kicked the bucket after 7 years. I left a light on and killed the thing twice within 12 hours, so I decided I'd just pay the difference on their warranty and get a new one. The first one held up well whenever I used my truck's stereo for long periods of time at parties, so I'm pretty happy with them. I will be setting up a dual system in my next truck so I can run more accessories without having to worry about the battery.