Hello there.

I have a 2010 Laramie 2500, and I just bought the truck last year, and from the moment I bought it, I noticed the batteries have slowly been getting weaker and weaker.

In the past, I would have to connect a battery charger and turn on a slow amp charge while i installed my tune files.

I have also heard and experienced that the MM3 programmer will start acting up when the batteries start to go funky.

I was trying to reach out to see if anyone running the MM3 programmer on their 4th Gens found a good set of batteries to run.