When I start the engine, both batteries pop up to around 14.0V and the DIC clears and all is wonderful in the world. To test everything, I took the isolator out of the equation and wired both the Primary and Auxillary batteries positive terminals to the alternator and removed the connection from the alternator to the isolator. Menu Business & Industrial Collectibles Consumer Electronics. I read about 2.5V from the Alternator, but that falls off slowly. 20,The NOCO IGD200HP 200 Amp High-Performance Battery IsolatorNever installed, Please look at photos carefully as they are an important part of the description.a solid-state electrical device that elimin. It seems neither battery is charging when the engine is on. Normally, after starting, the Primary battery would pop up to around 14.0V but that is not the case today. On the DIC I have the message 'Service Battery Charging System' and only have about 11.5V on the Primary battery and 12.5V on the Auxillary. Issue is that I got in this morning to start it up. Alternator is wired directly to the Alt terminal on the isolator. Primary cranking battery to Bat1 and Auxillary battery to Bat2.

Positive terminal from each battery to the terminals on the isolator. Anyway, I wired everything up accordingly. I also have 2 Optima Red Tops that I will be using for my project. I am adding a new Noco IGD-200HP to my 20. Noco IGD200HP 200a hp battery isolator product details: Noco is a leading manufacturer of technology solutions for many businesses and government agencies around the world. I know this may seem redundant but I can't find a situation identical to mine so I figured I would reach out to the community for your thoughts. Have a curious problem that I am trying to rectify.

Noco igd200hp