I am parking my 12 Dually for the winter as I don't need it to pull the fifth wheel. What are you thoughts for the batteries? Should I leave them in and buy one of those battery maintainers? Will it charge both batteries? Should I pull the batteries? If I pull the batteries will it have a negative impact on the electronics specifically for the 730N?
In the past with my 06 and 02 I just pulled the batteries. But this has so much electronics I don't know and of course the local dealership is useless.

Thanks for the help

 

I parked mine for 3 months and I can say ever since I started driving it again about 2 weeks ago my batteries are weak. It struggles to start it. I have no clue about the electronics

 

Without a doubt I would buy a Battery Tender. I use them on tractors, atv's and cars all the time. They have paid for themselves many times over in battery costs. Not sure what you do on a double battery vehicle. I would check with a battery shop. I like the Battery Tender Plus and they run around $55. Never had any issues with them and I have six running all the time. With the computers on these trucks, I would not want to do a battery disconnect for a long period of time. Hope this helps.

 

Thanks for the help guys. I think what I will do is remove one battery, pass side and keep the positive lead isolated and get a battery tender for the driver side battery. It should have enough power to maintain the computers and hard drive for the radio. When I parked my 06 the second last time I tried the battery tender for both batteries and it fried the maintainer I had. Thanks again.

 

I've been retired for 10 years so don't use the truck much over the winter, I just leave the truck AS IS and occasionally put the charger on overnight, maybe once every 2 months. I start it often and move it about 30 feet out of the garage when welding or painting then back in when done. Never had a problem.

 

Sounds like a maintainer issue...there's nothing inherent in dual 12-volt batteries that should cause it to fail, all the maintainer sees is one giant 12-volt battery.

 

Pronstar U know how many times I had to type that? Kept spelling something different. LOL So perchance I should just buy a good maintainer? Was not sure if dual batteries messed it up.