My boat is in the Nassau and I am getting two new deka 4d AGM atteries and my balmar alternator is strong. Is there any point to install a new more modern regulator, like the VR3 if price is no object? I always wondered if the absorption charge time for my batteries was correct on the next step life line,2002 , I have on my boat now.

It seems like the newer regulator sets this with a switch. If I do switch a new one in, will it fit in the same place? Will the old wires to the unit work and fit with the newer model? Will I need to add any new wires? Thank you for your input.