Looks like it's an IOTA DLS-45. Under the bed.
Apparently the DLS-45 is a pretty good voltage provider, but a single stage charger. It can either charger 13.6v or 14.2v. It's either on or off, which in combination with the fact that my push-to-disconnect seems to be broken is probably why batteries have fried on this thing for previous owners...
Some good news though, Apparently IOTA offers a plug in option to turn this thing into a smart-charger... See:
IQ Smart Charger for DLS Series Battery Chargers from IOTA Engineering
Costs $25. Can't beat that for easy of conversion to smart charger...