I did see those, but I was thinking of a gel filled battery.
$663.00 later :evil: I bought a 16 volt battery and charger today. Will let everyone know how it works. I went ahead and got the 12volt / 16 volt charger. I'd be ticked if I couldn't charge a 12 volt at the track if I needed to and I'm not gonna try to keep up with 2 chargers.