Good article. I am hoping to build a a 24 v bank with 4 large 6v so I can keep them in series. I'm looking at trojans rv/marine batteries thier largest is the L16H-AC which is 435 amp hours @ 20 hour. I still have to do my energy audit to see how much storage I will need.
Another consideration is the available charging currant which should be at minimum 1/12 of the battery capacity for good battery life from what I read on the solar panel forum PNW Steve posted.