extra battery help question

[jonnybusa 10+ year member]

I never had to use an extra battery but wanna try it out. I have no idea how to hook one up to an existing system, and my search really didnt answer my questions.

Now, if I buy an extra battery, can I just wire it right in line w/ my stock battery, or do I have to do something special?

I'm hoping to just buy another like the stocker, and run it in line w/ my stocker and go.

Will this work, or is there more to it?

Alts for my car are rediculously over priced....almost $400 for a 200a, so F that........

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[DTK 10+ year member]

its really simple run 1/0 awg wire from the car batt to the second batt make sure u have 250 or 300 amp inline fuse. the ground ground it in bare chasis this is important . so basicly + from car batt to + to the second batt and ground is ground . now u may have to upgrade ur alt or do the big 3 it would really help getting 2 batt charge. if u have any q just let me know hope this helps you

 

[jonnybusa 10+ year member]

its really simple run 1/0 awg wire from the car batt to the second batt make sure u have 250 or 300 amp inline fuse. the ground ground it in bare chasis this is important . so basicly + from car batt to + to the second batt and ground is ground . now u may have to upgrade ur alt or do the big 3 it would really help getting 2 batt charge. if u have any q just let me know hope this helps you

I already have the big 3 done in 0 guage, but thats it. So just run it inline....thats easy. thanks

 

[DTK 10+ year member]

its that simple also add another fuse once u get power from the second batt to ur amps or dist block.

 

[jonnybusa 10+ year member]

its that simple also add another fuse once u get power from the second batt to ur amps or dist block.

ok....next question is do i use the same size cca battery as the stocker, or can i go bigger?

thanks

 

[scotsman 10+ year member]

I ran (2) 1/0awg runs from my the + and - battery in the front to the + and - to the battery in the trunk. I wouldn't use your stock battery in the trunk, get a dry cell battery at least. You also need to fuse the power line close to the front batter and close to the rear battery.

 

[Louisiana_CRX 5,000+ posts]

Both batteries need to be fused....because you can have fire from a short at either end //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[Louisiana_CRX 5,000+ posts]

I ran 6 1/0's from my front battery to my rear battery....

 

[2critical 10+ year member]

^^^ As said above make sure to fuse power wire at BOTH ends of main run. Usually

 

[audiolife 5,000+ posts]

http://www.kinetikaudio.com/manuals/khccells.pdf good diagram on page 8 you should fuse both batteries (inbetween eachother within 18" and in same compartment)

 

[jonnybusa 10+ year member]

in my 2005 chrysler 300, my stock battery is already in the trunk, so I'm guessing its vented well enuff, and I think I can even fit another battery in the same area, so they'll both be out of the way.

****, I just HATE pulling everything out of the trunk to do this, but it can only help....

thanks for the input guys!!!!

 

[Foote 10+ year member]

Hate to jack your thread, but Im interested in putting in another battery too. Ima little confused...are we wiring to the posts or to the terminals? Cuz I got a GM side-terminal thingy...in my 1990 blazer s10 so the adapter for amps kinda...makes it impossible to jump wires to an extra battery....so what do i do?

 

[germanyt 10+ year member]

I have a red top with side posts up front and a yellow top in the back. I used to use a battery isolator but found out when i disconnectd it that I was losing half a volt because of diodes. now my alt has 1/0 from it to the side post on the red top, red top side post neg has 2 1/0 awg wires about 6" long to the chassis. red top pos top post has 1/0 running to yellow top side post. yellow top ground side post has 2 1/0 awg to chassis. yellow top top post has amp power and amp ground runs to yellow top neg

 

[germanyt 10+ year member]

here is a crappy drawing. those are amps on teh bottom left by the way

 

[germanyt 10+ year member]

this one is a bigger image