Battery/Alternator?

[thstone]

I use a small, lightweight battery in my Boxster race car where weight savings is critical. Otherwise I use a standard size battery (e.g., in the 996).

[Jamesp]

I usually get the biggest baddest battery that fits. I just bought one size too small, but that was what the battery guide said to get. Next time I'll do a little more investigation and get a bigger battery. The heat in Texas eats batteries so you need every advantage you can get.