Adding A Second Battery To My 09 6.0?

[gtiguy]

I want to hook up the second battery in my 09 Sierra 6.0. It has the spot for it and I picked up the triangular retainer that comes factory on Battery 1. I found an article and just wanted to verify this is the correct way to do it. Im pretty sure to create a 24v system, I'd have to run the positive to the negative between batteries and then to the truck. But I honestly HNFC!

 

Any insight?

 

Here is the original article:

 

"I've read a lot about dual battery setup.....so much that I'm confused. 2008 GMC

Sierra, factory battery. I installed a Duralast Gold in the Aux Bat tray. Ran

Negative from Bat2 to same ground point as Bat1. Ran Positive from Bat2 to

connection point of Bat1 on distribution block before fuse. Is this okay or do I

need an isolator? My objective is simply to be able to start the truck after

playing factory stereo for 6 hours or so and power converter for tailgating

accessories.

Submitted: 16 days and 20 hours ago.

Category: GMC Value: $18 Status: CLOSED +Read More

Accepted Answer

 

You are correct on both questions. Good luck and please accept my answer. Thanks

T MAN

 

Expert: tristan

Pos. Feedback: 90.9 %

Accepts: 83

Answered: 11/19/2009

ASE MASTER

8yrs. exp. ASE MASTER "

[salden77]

I want to hook up the second battery in my 09 Sierra 6.0. It has the spot for it and I picked up the triangular retainer that comes factory on Battery 1. I found an article and just wanted to verify this is the correct way to do it. Im pretty sure to create a 24v system, I'd have to run the positive to the negative between batteries and then to the truck. But I honestly HNFC!

 

Any insight?

 

Here is the original article:

 

"I've read a lot about dual battery setup.....so much that I'm confused. 2008 GMC

Sierra, factory battery. I installed a Duralast Gold in the Aux Bat tray. Ran

Negative from Bat2 to same ground point as Bat1. Ran Positive from Bat2 to

connection point of Bat1 on distribution block before fuse. Is this okay or do I

need an isolator? My objective is simply to be able to start the truck after

playing factory stereo for 6 hours or so and power converter for tailgating

accessories.

Submitted: 16 days and 20 hours ago.

Category: GMC Value: $18 Status: CLOSED +Read More

Accepted Answer

 

You are correct on both questions. Good luck and please accept my answer. Thanks

T MAN

 

Expert: tristan

Pos. Feedback: 90.9 %

Accepts: 83

Answered: 11/19/2009

ASE MASTER

8yrs. exp. ASE MASTER "

 

yes if you connect positive from first batt. to negative on second batt. and neg from first batt. to positive on second batt. you will get 24 volts. you dont want to do that!! if your only using the battery to start the truck after playing radio all day you could run wires between the 2 batteries, neg to neg, positive to positive, and call it good, but if you want to spend a little more money and get a battery isolator then you can have the one battery run all your acesories and have the other battery as your starting battery. all you have to do is flip a switch start your truck.

[salden77]

 

my setup in my truck....

 

[gtiguy]

my setup in my truck....

 

 

Awesome, thanks for the info and the pics, very nice setup. The reason I want to do this is because of when I plow. Whenever i press the fishstick to move my blade, the lights all dim. In my 03 1500 with the 5.3, I eventually cooked the batteries in the winter because I lowed so much damn snow.

[FargoZ71]

you run it neg to pos ect your running in series.. be bad.. neg 2 neg and pos to pos, and the isolator is a good idea, How hard is it on your truck for plowing? I have the same truck so am curious ( 03 1500 ). My bro just uses a 3/4 ton.

[gtiguy]

you run it neg to pos ect your running in series.. be bad.. neg 2 neg and pos to pos, and the isolator is a good idea, How hard is it on your truck for plowing? I have the same truck so am curious ( 03 1500 ). My bro just uses a 3/4 ton.

 

 

My 03 1500 plowed really nice with and HD blade (7'6") I never had any issues really. I did turn the torsion bars up. I traded the truck with 40000 miles on it. I did however have to replace my whole front end suspenion, the plowing spun it. But when I go out, I plow for 4 hours and its all charity work. BS IMO. I did notice a huge difference in the 2500 though, when I lift the blade the truck front end drops maybe a half inch. Where as my 1500 bottomed out. (basically)

[salden77]

i wouldnt know iv never plowed with my truck, i just have the dual optimas because my stereo system was burning up my single optima battery about once a year so i decided to try dual optimas and it def. made a diff. although interior lights still dim a little bit sometimes some plow guys dont use a battery isolator, they just wire the the batteries up neg to neg and positive to positive cuz there lights dim when they move the joystick for the plow.

[shocktrp]

my setup in my truck....

 

 

Awesome, thanks for the info and the pics, very nice setup. The reason I want to do this is because of when I plow. Whenever i press the fishstick to move my blade, the lights all dim. In my 03 1500 with the 5.3, I eventually cooked the batteries in the winter because I lowed so much damn snow.

 

 

GTIGUY: What size alternator do you have?

[salden77]

i have 145 amp which is perfectly fine to charge the 2 batteries.

[gtiguy]

i have 145 amp which is perfectly fine to charge the 2 batteries.

 

 

I have the 160 amp.

 

Last night when I hooked on the plow, I went out and tried it and watched my voltage gauge. The needle barely dropped when I activated the pump. So Im thinking that just because my lights dim a little its not going to kill the battery. On my 03 the voltage gauge would drop below 9 every time I touched the control. Even the heater fan would just about shut off.

[salden77]

I have the 160 amp.

 

Last night when I hooked on the plow, I went out and tried it and watched my voltage gauge. The needle barely dropped when I activated the pump. So Im thinking that just because my lights dim a little its not going to kill the battery. On my 03 the voltage gauge would drop below 9 every time I touched the control. Even the heater fan would just about shut off.

 

 

o awesome, maybe when its time for new battery then you could go with dual batteries then.

[searay220]

I have a 2006 GMC Sierra Crew 6.0 . Does anyone know how many amps my alternator is?

[CasualButJiggy]

Would it also be acceptable to ground the second battery to the chassis, and run pos to pos, neg to chassis?