Dual Battery Option??

[silverado04]

Howdy All..

 

I was wondering whats the second Battery do? (its the Factory Option unit)

 

Can someone shed some light on its use/purpose? is it always being charged when the trucks running?

Also anyone with unlimited use of carfax? please see my post in the 2500/3500 forum. if you can help..

 

Thanks for all the input.

[Tucson_02Silverado]

Besides for diesel use...aux power for a cab over camper etc.

[builderpaul]

Howdy All..

 

I was wondering whats the second Battery do? (its the Factory Option unit)

 

Can someone shed some light on its use/purpose? is it always being charged when the trucks running?

Also anyone with unlimited use of carfax? please see my post in the 2500/3500 forum. if you can help..

 

Thanks for all the input.

 

<{POST_SNAPBACK}>

 

 

 

There are 2 factory options. One is a dual option (TP2) the other is an isolated option (8B0)

 

The Dual comes standard with the d-max. Both batteries are hooked together so you get more available power for starting. This is also good for plow applications or any application where you will be drawing a lot of power while the engine is running.

 

The isolated option keeps the main (starting) battery separate from the aux battery. This is a good option if you use power with the engine not running. Like running a fridge/lights/etc in your trailer or parked with a high power stereo or, in my case, an inverter to power tools all day. You will always be able to start the truck even after running down the aux battery.