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Old 11/09/17, 07:28 PM   #1
RPM289
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Do into others what you would have them do to you. Matthew 7:12

Phenix City, AL
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How many of you guys are running 2 batteries?

I have space in the back to run 2 batteries just wondering if i need them or just overkill? I am running GM 1 wire Alt and painless harness only 2 100w off road lights so far LOL. Plans are for 4 more lights up top and marine sound system.

"VOLCANO" 1970 Bronco, "LIGHTNING" 1995 Lightning, "EARTHQUAKE" 1965 Pro-street Mustang, "RPM289" 1966 Mustang restoration project... can there be to many projects?
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Old 11/09/17, 07:36 PM   #2
bronconut73
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How did you do that?

Orlando
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Two Optimas under the hood.
One on each side.
Manual switch on both.
Winch wired to auxiliary/drivers side battery.
3G but going to 4G with Explorer swap.

'73, 3.5" sl, XL RS9's, F-250 mounts, Duff Long Arms, 1" bl, 35" MTZ's, C-4, twin sticked, P.S., built 351W, F&R Detroits, 4.11's, chromo axles, 11 leaf packs, SuperJoints, Chevy front disc, BC rear disc, BC Vintage a/c, Scat Procar 2K seats, 3G, Alpine/Pioneer, Bear, Cobra 148 GTL/Texas Star.
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Old 11/09/17, 07:43 PM   #3
Yeller
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Used to but found with modern alternators it is really not necessary. It takes a Lot of winching to need 2

Driver of the Broncno

The bus I ride is so short it is a yellow Smart Car full of squirrels, monkeys and clowns.
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Old 11/09/17, 07:45 PM   #4
bknbronco
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batteries are great for short term power......really your charging system should be able to handle the load. I dont see the point of 2 batteries. I too am adding a sterio........about 3 times the power my alternator will even put out. Should i add more batteries? NO.....should i add a bigger alternator? YES.

If women cant find you handsom they should at least find you handy!
Gota love the snowball effect...Thats broncoing for ya!
68 frame off project with glass tub and fenders
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Old 11/09/17, 07:47 PM   #5
bronconut73
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How did you do that?

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Quote:
Originally Posted by Yeller View Post
Used to but found with modern alternators it is really not necessary. It takes a Lot of winching to need 2
Tru dat,

But I use mine so I can have lights and stereo all night in camp and still be able switch over to the auxiliary battery to crank up in the morning. Then once running I bring the dead battery back on line so the 3G can charge it back up.

'73, 3.5" sl, XL RS9's, F-250 mounts, Duff Long Arms, 1" bl, 35" MTZ's, C-4, twin sticked, P.S., built 351W, F&R Detroits, 4.11's, chromo axles, 11 leaf packs, SuperJoints, Chevy front disc, BC rear disc, BC Vintage a/c, Scat Procar 2K seats, 3G, Alpine/Pioneer, Bear, Cobra 148 GTL/Texas Star.
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Old 11/09/17, 09:15 PM   #6
gnpenning
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I have more questions than answers.

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I ran 2. One for the replacement in the camp trailer when it would get low . Swap and charge while playing. Never had to worry about leaving the stereo on in the back woods.

70. 302, 3 spd, Duffy 3.5 lift. Future project
74. Dirty blue. 302, C4, ps, Ford frt disc, 4:30 31 spline curries, tru trac frt, Detroit rear.
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Old 11/09/17, 09:28 PM   #7
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What's the % you actually use the Bronco on trails?
And this is all about you, and not for bragging rights.
Probably less than 2%.

Most Bronco builds are more show than go.
Sure, there's the "salvage title" that runs the "Dusy" but, most Bronco owners are watching for paint damage.

Anyway, why do you need two batteries?

'77 Ranger/cut F&R/PS/PB/Vintage Air/2" suspension lift/1" body lift/T tie rod conversion/33-1050-15 BFG K02 tires/ 302/ Edelbrock 500 CFM 4 bbl/Aero Tanks/ Hooker Headers/ dual ex/ NV3550/ B&M shifter/ JB FabTwin Sticks/ 4.11s/rear posi.
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Old 11/09/17, 09:37 PM   #8
taipeichris
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Cool

RPM289,

I've always wanted to run two batteries to jump start myself but I always park backed in, facing downhill so if and when I do have a dead battery I popstart the old girl and I'm good.

Blubuckaroo,

I live to go camping with my Bronco, even if it's just car camping off PCH. But I think my license plate frame says it all...

Now can I get this pic to post? Nope! Way too much effort before dinner. I've flipped it, rotated it and still it's dinner time.

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Old 11/09/17, 09:48 PM   #9
Bukin 67
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2 Optimas mounted in the rear corners, just inside the tailgate. I run a 200+ amp alt also. Always good to have redundancy parts and power options when you're out in the middle of nowhere.

"The Bukin'eer" 67 Sport. All unoriginal
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Old 11/10/17, 11:08 AM   #10
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The Ark was built by amateurs, but the Titanic was built by professionals.

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Quote:
Originally Posted by taipeichris View Post
RPM289,

I've always wanted to run two batteries to jump start myself but I always park backed in, facing downhill so if and when I do have a dead battery I popstart the old girl and I'm good.

Blubuckaroo,

I live to go camping with my Bronco, even if it's just car camping off PCH. But I think my license plate frame says it all...

Now can I get this pic to post? Nope! Way too much effort before dinner. I've flipped it, rotated it and still it's dinner time.

An extra battery for camping is a great idea! You can run a shower, lights, and electronics on it. Sort of like an RV.
Just make sure you install a battery isolator on the camp battery so you can still start the engine after watching movies and playing games all weekend.

'77 Ranger/cut F&R/PS/PB/Vintage Air/2" suspension lift/1" body lift/T tie rod conversion/33-1050-15 BFG K02 tires/ 302/ Edelbrock 500 CFM 4 bbl/Aero Tanks/ Hooker Headers/ dual ex/ NV3550/ B&M shifter/ JB FabTwin Sticks/ 4.11s/rear posi.
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Old 11/10/17, 06:45 PM   #11
Skiddy
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I used to but not now. now if I was out camping, running lights or whatever I would have two for sure. kind of like having two in the boat a must have

Tried True Ford Blue RIP my brother Mstark
74 Bronco with Mustang 5.0 EFI w/painless harness, C4, 4.56 gears, D20 twin stick, 35's, 2.5" SL, 3" BL, rear spool, Grizzly front locker D44, full cage, 5pt harness. bla bla
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Old 11/10/17, 07:05 PM   #12
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Just one battery for me in the Bronco but I don't winch or even have a radio. Two in the pontoon starts after being at the island too long with the stereo cranking...

And here's your pic right side up.

Quote:
Originally Posted by taipeichris View Post
RPM289,

I've always wanted to run two batteries to jump start myself but I always park backed in, facing downhill so if and when I do have a dead battery I popstart the old girl and I'm good.

Blubuckaroo,

I live to go camping with my Bronco, even if it's just car camping off PCH. But I think my license plate frame says it all...

Now can I get this pic to post? Nope! Way too much effort before dinner. I've flipped it, rotated it and still it's dinner time.


'74 Explorer 408W/C4/Atlas 3.0/35 spline rear/discs & Grizzly's front & rear/Duff Monster 3.5" with 4-Link Rear/2" BL/Painless...

My build thread.
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Old 11/10/17, 07:06 PM   #13
sykanr0ng
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Well, I was thinking of just one BIG battery, but this thread reminded me that part of what I'm building for is overlanding/expedition style travel and camping so a battery or two in the back may be a much better idea to have.

... I've got skills, ingenuity and no regard for maintaining any kind of historical preservation or authenticity...My Dad called that sick and wrong
www.coloradoclassicbroncos.com
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Old 11/10/17, 08:50 PM   #14
jmangi62
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Hasta la vista,baby!

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I've got 2 Interstates under the hood, I have lots of lights, winch, stereo and future plans call for a air compressor and other goodies, only running a 100amp alt for now, may switch to a bigger one later. You can't really see them but one is in the original spot and the other one is on the dr side just like the original one.
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Old 11/11/17, 11:33 AM   #15
RPM289
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Do into others what you would have them do to you. Matthew 7:12

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I do alot of outings with kids at church so extra power if I'm lighting up the fields to play ball or whatever they need to see. I was not thinking when i got the GM alt no idea what output is on it but may not be enough.

"VOLCANO" 1970 Bronco, "LIGHTNING" 1995 Lightning, "EARTHQUAKE" 1965 Pro-street Mustang, "RPM289" 1966 Mustang restoration project... can there be to many projects?
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