Go Back   Ford F150 Forum - Community of Ford Truck Fans > Pre-1997 F150 > 1987 - 1996 F150
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 02-18-2011, 05:03 PM   #1
Senior Member
 
hiredman77's Avatar
 
Join Date: Jan 2010
Posts: 503
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default Dual Battery Install

Hey guys:

I did a pretty primitive dual battery install today and it turned out well and really cut down on the voltage drop at low RPM's. It took some research to find a battery that will work and fit where I wanted it to.

I welded up a bracket for the battery to sit in and bolted it into the spot where the factory jack used to sit on the inner fender. Then I unbolted the vacuum canister and smog filter. They were bolted to the inner fender by 2 bolts each. I drilled new holes and relocated the smog set up closer to the battery.

Then the vac can I made a new L shaped bracket bolted it to the fender and reattached it.

I ran them in parallel because all I was after was a little more oomph for the -20 winters here and for low rpm amperage. I am fully aware that all i did was make one giant battery and if I leave my lights on they both will go dead. Some day down the road I will put in an isolator but for now this will do juuuuuust fine.

PS I did clean everything up and make it nice n tidy before calling it done.
Attached Thumbnails
Dual Battery Install-sany0001.jpg   Dual Battery Install-sany0002.jpg   Dual Battery Install-sany0004.jpg   Dual Battery Install-sany0005.jpg   Dual Battery Install-sany0006.jpg  

Dual Battery Install-sany0007.jpg  
__________________
94 F150 5.8
8" total suspension lift w/ 35" Mud Grapplers
hiredman77 is offline   Reply With Quote
Old 02-18-2011, 05:33 PM   #2
Old fart
 
Join Date: Jan 2011
Location: NE of Atlanta - Georgia
Posts: 66
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

Not too bad - the only thing I would have done is kept the red for red and black for black, only for consistency ... but it's your truck and you know what's what so really it's a non issue.
Skink is offline   Reply With Quote
Old 02-18-2011, 05:49 PM   #3
Senior Member
 
hiredman77's Avatar
 
Join Date: Jan 2010
Posts: 503
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

Totally wanted to! I live in the sticks and our Napa only had black 1 gauge. So it was bout all I could get...i supposed they do sell red duct tape
__________________
94 F150 5.8
8" total suspension lift w/ 35" Mud Grapplers
hiredman77 is offline   Reply With Quote
Old 02-19-2011, 12:08 AM   #4
Jordan
 
mr7confused's Avatar
 
Join Date: Jan 2011
Location: Chico, California
Posts: 7,830
Mentioned: 2 Post(s)
Thanks: 4
Thanked 16 Times in 9 Posts
Feedback Score: 0 reviews
Default

ok im totally curious...how is this different from connecting two nine volt batteries together? i mean are there issues with the power switching back and forth or double voltage? i dont know this much about DC current haha
__________________
1992 5.0 XLT 115,000 miles, 4" lift on 31's, 4x4
Quote:
Originally Posted by amick218 View Post
We all don't live where they filmed Children of the Corn..
mr7confused is offline   Reply With Quote
Old 02-21-2011, 12:03 PM   #5
Senior Member
 
hiredman77's Avatar
 
Join Date: Jan 2010
Posts: 503
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

Its the same but it differs in how you hook them up: series or parallel.

http://www.zbattery.com/Connecting-B...es-or-Parallel

What I did was just made on giant battery. You could take 2 6V and wire them in parallel to make em 12V.

No issues with power switching back and forth as it is a constant 12V with no fluctuations in power. If I were to go parallel I would have ended up with 24V and smoked my wiring.
__________________
94 F150 5.8
8" total suspension lift w/ 35" Mud Grapplers
hiredman77 is offline   Reply With Quote
Old 02-21-2011, 12:48 PM   #6
Member
 
Join Date: Feb 2011
Posts: 54
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

That's pos to pos and neg to neg right? Seems easy enough.
flandersander is offline   Reply With Quote
Old 02-21-2011, 12:57 PM   #7
Assistant Administrator
5 Year Member
 
ymeski56's Avatar
 
Join Date: Jul 2008
Location: Long Beach Calimexifornia
Posts: 31,067
Mentioned: 12 Post(s)
Thanks: 52
Thanked 594 Times in 349 Posts
Feedback Score: 0 reviews
Default

What size Alternator?
__________________
"Saving the World....One Ford Truck at a Time."
ymeski56 is online now   Reply With Quote
Old 02-21-2011, 02:29 PM   #8
Mechanicalmike08
5 Year Member
 
Mechanicalmike08's Avatar
 
Join Date: Apr 2009
Location: St Francis Wisconsin
Posts: 421
Mentioned: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Default

hey man you better be carefull cuz i dont think you installed a battery isolator and if one the batteries has a lower voltage when you shut ur truck off they will discharge each other, unless the batterys came from the same plant at the same day they usually will have a problem unless a isolator is installed, check my thread i started about my dual battery install

Last edited by Mechanicalmike08; 02-21-2011 at 02:38 PM.
Mechanicalmike08 is offline   Reply With Quote
Old 02-21-2011, 02:53 PM   #9
Member
 
Join Date: Jan 2011
Location: Philadelphia, PA
Posts: 454
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

Wont this stress both of your batteries?

In a parallel circuit each component shares equal intensity.

If you alternator is meant to put out 13.8-14.2 volts when running --lets just average it to 14 volts-- then that means your battery receives a 14 volt charge.

If you place two batteries in parallel this means each battery is only getting a 7 volt charge! True they are only each putting out 7 volts apiece but doesnt the battery have a 'optimal' recharge happiness rating? In other words is a lower charge on each battery damaging the cells in some way?

Or does it act kind of like a trickle charger.

Not knocking yourset-up - I love it in fact! I love anyone who does anything DIFFERENT with their cars - just curious!
djhives is offline   Reply With Quote
Old 02-21-2011, 03:34 PM   #10
Senior Member
 
hiredman77's Avatar
 
Join Date: Jan 2010
Posts: 503
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

y: 135 out of a stang.

Mike: no isolator...yet. Not too concerned with it at this point as both batteries are new. The only thing I needed them for at this pt is for the -20 temps we have been having and getting enough juice to crank it over. Also this absorbed a lot of the load that my dual fans pull. Paired together they sit and hold a solid standing 12.6V. What isolator did you go with?

I will eventually go for a switched set up but for now this will do mighty fine.

DJ: as I see it this set up acts (and I always stand to be corrected) not as 2 separate batteries but 1 giant bat. The same could be said of a single batt that if one cell gets weak it pulls down all the others. Its still a 12V set up and gets the same amount of charge just a much longer load capacity and cranking duration due to increased size of batt. Like swapping out a 10 gallon gas tank for a 20 gallon tank...fuel still flows out at the same rate just more of it there.
__________________
94 F150 5.8
8" total suspension lift w/ 35" Mud Grapplers
hiredman77 is offline   Reply With Quote
Old 02-21-2011, 03:34 PM
 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
dual battery help xtreme821 1987 - 1996 F150 21 12-27-2011 08:00 PM
Dual Battery? for 07 f150 S0uthernrebel78 2004 - 2008 Ford F150 14 11-12-2010 07:33 PM
Dual Battery set up? Mechanicalmike08 1987 - 1996 F150 1 08-31-2010 09:18 AM
Dual Battery Tray 2low 1987 - 1996 F150 2 01-17-2010 01:27 PM
Dual Battery KC5-0 General F150 Discussion 6 10-31-2009 07:30 PM

Join F150 Forum

 

The Mustang Source
All times are GMT -4. The time now is 04:21 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2006 - 20011 F150forum.com
This site is in no way affiliated with the Ford Motor Company.