I recently had to replace the battery in my 08, with only 30k miles. It also never went more than two days sitting.

I thought it might have been my HID's pulling power when turned off, but when the battery was tested, it turned out to be bad. I'm sporting a Walmart Maxx as we speak, even that seems to crank it better than the stock. It was 12 degrease yesterday morning, and for the first time the thing cranked without sounding like it was going to take a few revs from the starter.

When I removed the battery, the negative terminal crumbled, with no corrosion what so over on it. So that just moved up another project I'd been wanting to do, replacing the OEM battery connections!

 

From our experiences here it's a good idea to pull the plugs if you've got an 07 or later vehicle with the original battery and check the fluid levels before it fails.

I fitted my new battery yesterday and it starts first turn now.

 

The last two bass boats I had came with a little green plastic "wheel" on the top of the "+" post on the battery. Supposed to turn it a couple of turns to isolate the battery from all electrical devices attached to it. Dunno what it is called, ain't much to them and they can't cost much. I would imagine it comes standard because boats can sit a while between uses.
Works good too, couple times I went nuts trying to figure out why I turned the key and nuthing happened, didn't even try to crank, only to realize I never tightened the thing down when I got to the water.
Might can get one of those and install it if your truck tends to sit for a bit at a time...

 

hmm ill look for that, mine dies if it doesnt get cranked for in between two days.

It sounds like some of the newer batteries are subpar (like our tires haha)

 

hammer,

It's a battery isolator. Fairly simple piece just has two metal pieces insulated from each other and the green **** has a metal threaded stud that threads into the two pieces connecting them.

Work great for cars that sit for awhile. It's the same thing as disconnecting the battery from the vehicle. So for a daily driver truck, that might suck because of resetting the clock and such.. and idk how good it would be to always be resetting the pcm depending on how often you would use it.

But I have one on my wrangler since it sits for weeks at a time and never had a dead battery. Can get them for like ten bucks at an auto parts store

 

Yeah, they look like this:

http://www.jcwhitney.com/battery-dis.../p2006122.jcwx#

 

Try rv/trailer stores they sell them for a little cheaper.

 

I wonder if it will cause the PCM to reset, and loose the radio presets, every time you use it?

 

Yes it will. It is a band-aid fix designed for old English cars with bad electrical systems. Bottom line, you need to find the draw. My truck has lots of extra lights and it can sit for a month with a 4 year old battery without any issues.

 

yea in this situation it's a bandaid fix. A lot of people use them on cars that sit for a long time which is more applicable.. but to fix a current draw issue it is a bandaid