My apologies if its been covered already, but it seems Eco-Charge doesn't carry the dual input 6-volt battery anymore. Only the dual 12v or 12v/6v or 12v/7.5v. WTF? I was going to spend the $80.00 on another 6v (already have the charger) but they no longer sell just 6v batteries and chargers. I'll put a ISO in the Yardsale forum.