Multi battery setup

 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 160
Registered: Jan-06
-posted in this section because it is much more active-
-please post only if you have a multi battery setup or are familiar with how to do it-

Setup information:
vehicle - 1999 4runner
alt - 200 amp excessive amperage
underhood battery - 1000 ca wetcell starter
amp - ma audio hk4000d wired to 2 ohm
big 3 and power/ground for amp done in 1/0
[sytem is a daily driver and will be played only with the car on]

I'm going to be adding two exide orbital 34xcd's to the back (very similar to optima yellow top). What equipment, if any, do I need to add the batteries(relay?isolator?). How should I wire all the batteries together(series?parallel?)? How do I connect my amp to the batteries?
 

Gold Member
Username: Drivingreckless

DD 9515f, USA

Post Number: 2557
Registered: Apr-06
Upload
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 161
Registered: Jan-06
Alright, that looks pretty easy. I ground the battery the amp is connected to, correct? Also, where should I fuse(I already have the one close to underhood battery positive), do I need any more? What about additional equipment like a relay or an isolator? I've been told of different batteries fighting each other. And thanks for the quick response!
 

Gold Member
Username: Adddisorder

West palm, Florida

Post Number: 2432
Registered: Jan-06
fuse the powerwire from the front to the back batt. on both ends.

also ground the back batts to the chasis as well
 

Gold Member
Username: Bestmankind

Fi AudioBTL

Post Number: 8136
Registered: Oct-05
i wouldn't mix different batteries. go with all 3 same batteries.
 

Gold Member
Username: Drivingreckless

DD 9515f, USA

Post Number: 2560
Registered: Apr-06
u dont need a relay or isolator unless ur batteries are different volts...
and its tru about u should not mix batteries as u are doin
u should keep just one type of battery thru-out ur system but its not always the case ...go for it
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 162
Registered: Jan-06
So fuse like this?
[URL=http://img366.imageshack.us/my.php?image=304297fuseslc2.gif][IMG]http://img366.imageshack.us/img366/7218/304297fuseslc2.th.gif[/IMG][/URL]

Do I ground both batteries to the chasis or just the battery with the amp connected to it? All I have to do for the amp ground is ground it to the negative battery terminal correct?

What about additional equipment like a relay or an isolator? I've been told of different batteries fighting each other.

Thanks for the quick response!
 

Gold Member
Username: Bestmankind

Fi AudioBTL

Post Number: 8138
Registered: Oct-05
ground the last battery in your chain to the chasis.

having an isolator is good but really don't need it.

make all your batts same if you are not getting an isolator.
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 163
Registered: Jan-06
Here's how I would like to wire it. Can I do it this way?
http://img125.imageshack.us/img125/9818/304297groundinghp0.gif

I'm still going to run my interstate wetcell under the hood, and both exide orbitals in the back.
What should I do to prevent the batteries from fighting?
All that you guys have mentioned is an isolater, but what about a relay? That is what my installer recommend I use, but I wanted to hear some more opinions. Also, I'm still not sure what the differences are between a relay and an isolator.
Link to stinger relay and isolater: http://www.stingerelectronics.com/web/prods/fans.asp

Once again, thanks for the replys!
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 165
Registered: Jan-06
bump
 

Gold Member
Username: J_baby15

Kentucky

Post Number: 1056
Registered: Feb-06
when yall say dont mix batteries u mean diff. brands right? cuz wouldnt it be fine for me runnin 2 yellowtops and my redtop still.
 

Gold Member
Username: Bernymac

Cambodian

Post Number: 1396
Registered: Sep-04
two yellows and one redtop sounds safe. Plus I'm sure theres people who already do that. What everyone probaly means is that, don't have two deepcycles different brands and differenat amps and then also have one lead acid battery and so forth. Two yellows and one red will be fine.
 

Gold Member
Username: J_baby15

Kentucky

Post Number: 1057
Registered: Feb-06
thats wat i figured berny, but they had me kinda confused.
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 166
Registered: Jan-06
any replys to my last post?
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 167
Registered: Jan-06
Here's how I would like to wire it. Can I do it this way?
http://img125.imageshack.us/img125/9818/304297groundinghp0.gif

I'm still going to run my interstate wetcell under the hood, and both exide orbitals in the back.
What should I do to prevent the batteries from fighting?
All that you guys have mentioned is an isolater, but what about a relay? That is what my installer recommend I use, but I wanted to hear some more opinions. Also, I'm still not sure what the differences are between a relay and an isolator.
Link to stinger relay and isolater: http://www.stingerelectronics.com/web/prods/fans.asp
 

Gold Member
Username: Bernymac

Cambodian

Post Number: 1402
Registered: Sep-04
wire all pos together, ground all batts to chassis. end of story. you can wire all negs together if you want also. ground is ground.
 

Gold Member
Username: Bernymac

Cambodian

Post Number: 1403
Registered: Sep-04
bump
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 168
Registered: Jan-06
So would this work?
http://img125.imageshack.us/img125/9818/304297groundinghp0.gif

I'm still going to run my interstate wetcell under the hood, and both exide orbitals in the back.
What should I do to prevent the batteries from fighting?
All that you guys have mentioned is an isolater, but what about a relay? That is what my installer recommend I use, but I wanted to hear some more opinions. Also, I'm still not sure what the differences are between a relay and an isolator.
Link to stinger relay and isolater: http://www.stingerelectronics.com/web/prods/fans
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 169
Registered: Jan-06
So would this work?
http://img125.imageshack.us/img125/9818/304297groundinghp0.gif

What are the differences between a relay and an isolator?
 

Gold Member
Username: Jakeyplaysbass

St. Louis, MO

Post Number: 1575
Registered: Jul-05
haha i love "paint" driving...
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 170
Registered: Jan-06
I know you love it, but does it work? I don't see why it shouldn't.

Here is the completed diagram with fuses:
http://img187.imageshack.us/img187/1152/304297groundingandfusesof1.jpg
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 171
Registered: Jan-06
bump
 

Gold Member
Username: Bernymac

Cambodian

Post Number: 1409
Registered: Sep-04
Yes it will work geez lmao. Don't forget the fuses from batt to amp. Also, you wouldn't need a second fuse next to the second batt if your sure no pos won't hit any neg. but just do it for safety reasons.
 

Gold Member
Username: Bernymac

Cambodian

Post Number: 1410
Registered: Sep-04
mind as well ground all batts to chassis as well.
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 172
Registered: Jan-06
You need a fuse between the battery and amp??? Do I need to ground each battery individually(I would prefer to ground everything to one spot on the chasis)?
 

Silver Member
Username: Waterboy2289

Martinez, Georgia 2 18 SX w/ ...

Post Number: 173
Registered: Jan-06
bump for indifference!

I may have asked the same questions alot more than once but I have yet to get any answers(to most of my questions). I know all you guys with big systems are running atleast one extra battery so you could easily answer my questions.
 

Gold Member
Username: Bernymac

Cambodian

Post Number: 1411
Registered: Sep-04
heres how I'm doing my multiple battery setup. Don't think to much about it. I'm doing two runs of 0awg positive wire from the front batt to the two back batteries. Grounding all batteries to the chassis. Theres two fuse holders 16inches away from the front batt, one fuse holder for each 0 awg pos wire. Now, I'm also doing fuses from the last battery to the amps. And yes you need a fuse between battery and amp to be safe, unless you have a lot of money and don't care about blowing up your amp for some certain reasons its best you have a fuse from the last batt to amp. Ground is ground so go ahead and ground each battery individually for shortest return path. Doesn't matter where you ground, as long as its a good clean ground no paint all metal. So sand the area down.
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