I found this on yellowbullit has anyone tried one yet.
Default Dyna Batt Review
I just wanted to give my opinion on the dry mini battery, I call it, from Performance Distributors. They are the guys that make the DUI line of HEI stuff and wires. They are local to us here in Memphis, so I stopped by and picked one up. They only weight about 12 lbs and they have a couple of different terminal configurations. I installed one a couple of races ago along with a 105 amp alternator (a higher amp alternator would be nice). So far, it has been great. It starts the car fine and runs my fuel injection/nitrous solenoids/ fuel pumps, ignition just fine. I'm sure the car basically runs off the alterantor when it's running though. I usually hook up my charger between rounds because I have 2 dc bottle heaters I use in the car and they will kill pretty much any battery. I had the relay that goes to the bottle heaters weld the contacts together and it was on for quite a while before I found it. Amazingly my burst disk didn't blow. It completely drained the battery and I thought I was done for the day, but I put my charger on it and in 30-45 minutes it was topped of and started the car. I was amazed!
I just thought I would give my opinion/review of these little batteries.
http://www.performancedistributors.com/batteries.htm