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Add Second Battery?


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#1 ness5575

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Posted 29 July 2008 - 12:51 PM

I have a 2008 Suburban. I also have a pop-up camper. We usually camp more in the fall when the nights get cool. Currently I have it set up so that the truck can power the camper lights and furnace thru the light wiring (running off of the truck battery - the camper has to be connected to the truck).

This works great but makes me nervous that a cold night (and lots of furnace operation) will drain the battery and the truck wont start the next morning. So, I have been considering adding a battery to the popup to operate the lights and furnace.

I noticed that the Suburban has a spot for a second battery under the hood. Has anybody added a battery in this location to serve their camper? I thought it might be good to do it this way so that the battery will charge when I drive around during hte day.

1. Is this a good idea?
2. Should I run the batteries together all the time? (ie the second battery is there all the time)
3. Should I make it so that the second battery is soley for the trailer? (ie take it out after camping done for the year?)

Does anybody have any ideas or thoughts for me?

Thanks!
2008 Chevy Suburban

#2 snakedoctor

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Posted 29 July 2008 - 12:57 PM

I would add a deep-cycle battery to the camper. It is set up for this.

Don

#3 gvbhunt

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Posted 29 July 2008 - 01:23 PM

If someone can verify that the parts are the same for a 2007 Sierra as they are for your Burb' then I can give you the part numbers and some other information that had been given to me by MS3Dale and M. Cueva. I am looking to do pretty much the same thing and setting it up as if it was from the factory with the dual battery setup.
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2007 GMC Sierra Z71 SLT Crew Cab 4x4 6.0L 4l70e 3.73 gears 5000k HID low beam and driving light upgrade.
Modifications: True Flow PAI, HPTuned (Removed HUGE PE Delay, Added 30 to speed limiter, modified AFM/DOD for better MPG)

#4 ness5575

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Posted 29 July 2008 - 01:31 PM

I would add a deep-cycle battery to the camper. It is set up for this.

Don


this is option 2 if adding it to the truck isnt the way to go. the camper is not really set up for it, I need to add a tray to the tounge and some wiring to hook it up. My concern about this method (and the reason to look into adding it to the truck) is that after multiple nights of camping the battery will be worn down and I wont have any way to charge it. i was hoping that adding it to the truck would allow it to charge while I drove during the day.

is it possilbe to add a deep cell battery under the hood, connect it only to run the trailer, and still be able to charge it while driving? I am thinking no, but dont know...
2008 Chevy Suburban

#5 gvbhunt

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Posted 29 July 2008 - 01:45 PM

If you have the HD trailer wiring (7-pin on the bumper) the +12v pin runs up to the fuse box under the hood. If you have an isolated battery setup, when the engine is running it will charge the second battery and disconnect it when the key is off allowing you to only run the 12v off of the aux battery.
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2007 GMC Sierra Z71 SLT Crew Cab 4x4 6.0L 4l70e 3.73 gears 5000k HID low beam and driving light upgrade.
Modifications: True Flow PAI, HPTuned (Removed HUGE PE Delay, Added 30 to speed limiter, modified AFM/DOD for better MPG)

#6 2006Z71

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Posted 29 July 2008 - 02:00 PM

Just adding a idea, this is what i have done, I upgraded my trailer battery to a deep cycle marine battery, and installed a small solor pannel on the roof of the trailer. The cost is very little and it takes a lot off the truck. I know its not really what you want but it helps, and you do not need direct sunlight to charge. A lot of RV stores sell this type of set up.
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#7 24v

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Posted 29 July 2008 - 08:45 PM

You could run 2 6volt golf cart batteries in series. Then you would not have to worry about charging them while camping. You just put a trickle charger on the when you are home.

#8 C. Charles Hahn

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Posted 03 January 2009 - 07:04 PM

If someone can verify that the parts are the same for a 2007 Sierra as they are for your Burb' then I can give you the part numbers and some other information that had been given to me by MS3Dale and M. Cueva. I am looking to do pretty much the same thing and setting it up as if it was from the factory with the dual battery setup.


Sorry to bump an old thread, but I'd love to get the P/Ns for doing this on my '08 Sierra. I want to be able to install an Optima deep-cycle (yellow top) aux battery so I can use my power inverter while the truck is off and not have to worry about it starting afterward.

:lol:
2008 GMC Sierra CC SLT "All Terrain" Z71 4x4
Stealth Gray Metallic | Ebony UltraSoft Leather | 5.3L FlexFuel AFM-Delete V8 | 3.73 Locking Differential (G80)
Airaid MIT | K&N Drop-In | HP Tuners | Line-X Over-the-Rail | Fold-a-Cover G4 Elite | Spencer's 6K HID Conversion Low Beams and Fogs | OEM Navigation | OEM OnStar Bluetooth | Addco Front & Rear Sway Bars

2009 GMC Envoy Denali 4WD
Quicksilver Metallic | Ebony Leather | 5.3L AFM V8 | 3.42 Locking Differential (G80)
"IEATSRT8'S" CAI | Hotchkis Rear Sway Bar | HP Tuners

#9 gvbhunt

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Posted 06 January 2009 - 01:25 AM

If someone can verify that the parts are the same for a 2007 Sierra as they are for your Burb' then I can give you the part numbers and some other information that had been given to me by MS3Dale and M. Cueva. I am looking to do pretty much the same thing and setting it up as if it was from the factory with the dual battery setup.


Sorry to bump an old thread, but I'd love to get the P/Ns for doing this on my '08 Sierra. I want to be able to install an Optima deep-cycle (yellow top) aux battery so I can use my power inverter while the truck is off and not have to worry about it starting afterward.

:dunno:

Sent you a PM
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2007 GMC Sierra Z71 SLT Crew Cab 4x4 6.0L 4l70e 3.73 gears 5000k HID low beam and driving light upgrade.
Modifications: True Flow PAI, HPTuned (Removed HUGE PE Delay, Added 30 to speed limiter, modified AFM/DOD for better MPG)

#10 rib54

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Posted 10 November 2009 - 09:57 AM

If someone can verify that the parts are the same for a 2007 Sierra as they are for your Burb' then I can give you the part numbers and some other information that had been given to me by MS3Dale and M. Cueva. I am looking to do pretty much the same thing and setting it up as if it was from the factory with the dual battery setup.


Sorry to bump an old thread, but I'd love to get the P/Ns for doing this on my '08 Sierra. I want to be able to install an Optima deep-cycle (yellow top) aux battery so I can use my power inverter while the truck is off and not have to worry about it starting afterward.

:rollin:


I have a 2009 Sierra 1500 SLT, Crewcab and want the second battery for same reasons, ACCESSORY power while engine is off.
Yes, local dealer will install (just like factory) and warranty for 12 mo. 12,000 mile but they want $800. to do it!!!

Any one has .pdf plans or schematic for a do-it yourself?

I promise NOT to DUCTtape wire over roof or hood!

Thanks,

rib54

rib54{no-spam-please}@excite.com

#11 RhinoMan

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Posted 11 November 2009 - 09:05 AM

Depending how long you want to dry-camp for, I agree with the poster above. A couple of Trojan T105s would give you *plenty* of juice for a very long time :rollin:

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#12 Ubnvs

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Posted 03 March 2010 - 10:13 AM

If someone can verify that the parts are the same for a 2007 Sierra as they are for your Burb' then I can give you the part numbers and some other information that had been given to me by MS3Dale and M. Cueva. I am looking to do pretty much the same thing and setting it up as if it was from the factory with the dual battery setup.


Sorry to bump an old thread, but I'd love to get the P/Ns for doing this on my '08 Sierra. I want to be able to install an Optima deep-cycle (yellow top) aux battery so I can use my power inverter while the truck is off and not have to worry about it starting afterward.

:cheers:

Sent you a PM


Could I also get those P/Ns for my 08 GMC Sierra? Thanks.

#13 C. Charles Hahn

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Posted 03 March 2010 - 10:59 AM

Could I also get those P/Ns for my 08 GMC Sierra? Thanks.


Take a look at this thread:

http://www.gm-trucks...showtopic=56398
2008 GMC Sierra CC SLT "All Terrain" Z71 4x4
Stealth Gray Metallic | Ebony UltraSoft Leather | 5.3L FlexFuel AFM-Delete V8 | 3.73 Locking Differential (G80)
Airaid MIT | K&N Drop-In | HP Tuners | Line-X Over-the-Rail | Fold-a-Cover G4 Elite | Spencer's 6K HID Conversion Low Beams and Fogs | OEM Navigation | OEM OnStar Bluetooth | Addco Front & Rear Sway Bars

2009 GMC Envoy Denali 4WD
Quicksilver Metallic | Ebony Leather | 5.3L AFM V8 | 3.42 Locking Differential (G80)
"IEATSRT8'S" CAI | Hotchkis Rear Sway Bar | HP Tuners




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