We all know what might be happening. We all know what could be happening. It would just be nice to have some numbers and to know what actually IS happening in any given case. And there's no simple way to predict that, given the current lack of integrated charge controllers.
well a couple of shunts and a cheap
ammeter will let you know all that.
You can of course do some maths etc, and predict what will happen, or you can measure the real life performance.
As to you example, when a battery
is on absorption mode, i.e. when the regulating action is happening, currents are very low, so it doesn't really matter.
BUT , yes everyone has said without a current steering
control, you cannot tell which (well you can) source may finish the charging
. Note its not as simple as the setting of the regulation voltage. its more to do with the ratio of the source output impedance's. when the source is regulating its output, that doesn't mean its stopped charging
. its still contributing current. ( just not the same).