The big truths are these, unfortunately: I know nothing about the history of this battery system prior to March, 2009; Gizmo's former owner mostly kept the boat on shore power, anyway; I almost never have access to shore power, haven't been cruising extensively yet, and hate running the noisy generator (another issue to be investigated); and I'm pretty dumb about batteries/chargers etc. overall...which is probably obvious. For instance, am I doing serious power misering at the float just because I don't run either engine or generator enough, or because neither is charging the way they should? The alternator seems to push about 60 amps for a brief period, than about 30-40 and the latter about 30. Would the never-installed battery temp sensor for the Freedom 25 make much difference?