I have an autocross racecar battery dilemma/question that I need some feedback on.
My 914-4 is a dedicated bare-bones autocross car. When I say it is bare bones I mean if doesn’t make it GO or STOP it is not on the car. This includes the alternator which I removed years ago. Problem is I don’t use the car as much as I used to, so I’ve been going through batteries because they don’t get cycled enough and they die an early death. Over the years I’ve used different types of batteries including everything from little ATV batteries to used car batteries bought at junk yards. Recently battery “management” has become my biggest PITA. Also my old “dumb” charger isn’t able to keep them charged properly and with the car being use less, they die early even when kept charged.
Now I’m thinking I need to take a new course of action. I want to buy a new marine battery of the dual purpose starting/deep cycle type and get a new high-tech trickle charger to maintain it. I need something that has the CCA to turn the engine over, plus the long discharge capacity of a deep cycle battery in order to be able to make several runs and keep it running while waiting in line between runs. I’m thinking the dual purpose battery is the way to go.
So I asking for your thoughts, comments and concerns? I'm really looking for some validation that is the right thing to do.
I found this to have a good explanation of battery types:
Selecting a Marine Storage Battery | West Marine