I'm currently taking 4-12s to go most of the day, so if I could change 4-12s for 4-6s I figure I should be saving a little weight. ( But I've never weighed a 12 volt battery to see what they weigh) My batteries come out of my boat and get stored in the garage after every trip so why can't I just charge then one at a time? I only fish one day every weekend so the charging time realy ain't a biggie. I know for a fact that guys are running this setup, I'm just tryin to verify what they're telling me as these are guys I see at the ramp pretty much every weekend and not friends. I need to buy 4 new batteries anyway this year and the cost isn't superbad on the 6s, so I was thinking why not, since my batteries are getting old...