denpooch wrote:Source of the post....KM its a 12 volt thruster and the two starter batteries (900 CCA) are wired in series....
I'm sure KM's point is that if you wire two 12 volt batteries in series, you would get 24 volts. I think you mean they are wired in parallel.
denpooch wrote:Source of the post....Viper the owner manual also states: "...While the engines are running, their alternators generally supply enough power to replace the power used by the boat’s 12-volt equipment..".....
Ya that's a given. What I was pointing out was that while we are always concerned about having "smart" chargers maintain our expensive batteries, and rightly so, we seldom worry about them not being charged by "smart" alternators or "smart" add-on charge regulators. If we're so worried about the "smart" charge patterns and switching the house charger to the correct battery type setting which is a few tens of a volt difference to accommodate proper charging requirements for the battery type specs, why aren't we just as concerned with how they are being charged by the dumb alternators who's charging won't be accurate to tenths of a volt? They are nowhere near that accurate yet on a long run and in a fully charged state, they're being charged by an alternator output that is way off the required spec for hours or days.