Spoke with Marinco: The wiring for each battery must be installed as directed for the chargers longevity and correctness for the design, regardless if they are in parallel. He explained their interpretation as to why connecting to each battery post is compatible with the ABYC specs. For this model a parallel set of batteries each require its own leads going to each battery, and must have the companion leads in the jacket cable (positive and negative) connected to each batteries respective post, for this model charger. He said the Promatic model 63140 should meet my needs. What an awakening from when I first started out to select a charger. I am pleased with the education you provided and have added it to my bank (no pun intended) of knowledge. This forum is fortunate to have your vast experience and knowledge to consult with.
