Linc can I just ask why?
As you mentioned, and as would be my concern, will A123 take a 'dirty' charge directly from the rectifier? And why would you want a messy cluster of a battery.. the new AGM batteries are supposed to be the shiz and cost about the same as a gel cell.
Not to be the skeptic, I'm known for doing odd stuff like this, but what is the objective?
Curious