Ready to go w/ 2 6v batteries: converter/wire question

charge wizard arriving tomorrow! From the comments here, I am confident it will send enough voltage to the bats in boost to do the job. I'll see how it works with the two 12 volt marines I have now, but I'm pretty sure they are shot. I have a couple weeks to get the Trojans, before a week long dry camp.

Thanks to everyone for their input! Greatly appreciated.