We have several new batteries coming out in two weeks. The new T-series will feature two posts for running in the car like a normal battery, and a third post for charging. This is for the new protection system, which will make sure the charging process is safe and to prolong cell life--basically, it's a budget alternative to our fully-managed L series. Like all our batteries, these feature built-in cell balancing. The T1600 is 16v and 20Ah, geared towards dirt track racers. The T680-16 is a lighter battery, also 16v. These batteries ship 7/25/11.
We also have a suitable product for your 12v application.