How do i add another battery?

[Danny Ruiz]

i am planning to add another amp so i thought a second battery would help. whats the process of doing this.

[sprkn_ranger]

Just run a positive 1/0 wire between the two battery's positive terminals and fuse both ends of the wire close to the batterys. And if you have enough wire, run another 1/0 wire from the neg terminals on each battery. So like this:

Batt pos -----fuse-----------------fuse-----batt pos

Batt neg --------------------------------------batt neg

If you dont have enough wire for the neg run, then just ground both batterys with 1/0 to the chassis or frame.

Edited June 27, 2012 by sprkn_ranger

[Danny Ruiz]

alright cool thanks

[graham0599]

1. Make sure you have an alt that can power both

2. + from front batt to back batt

3. - from front batt to back batt

4. - from back batt to a good ground

Oh ya forget to say fuse the positive on both ends. At least one end

Edited June 27, 2012 by graham0599

[ALPINE408]

Never seen an alt not be able to power some batts? Care to elaborate on this?

I have had 6 batts on a 60 amp stock alt worked just fine just takes longer to charge them

[Danny Ruiz]

How would i figure out if my alt can? its a 370z

[ALPINE408]

Your fine he has no clue what he's talking about

[ChrisAllen]

Searching helps a lot. It's soooo easy to do, and you could even search on google. I doubt anyone is going to spoon feed for such an easy subject since there are plenty of write-ups and how-to's of adding another battery properly as well as upgrading your alternator (which you should plan on doing if you plan on pushing a lot of power)

[sprkn_ranger]

1. Make sure you have an alt that can power both

2. + from front batt to back batt

3. - from front batt to back batt

4. - from back batt to a good ground

Oh ya forget to say fuse the positive on both ends. At least one end

Fusing just one end is totally pointless, if you have a positive wire in between two batteries, and only fuse one end and the wire shorts somewhere, the un-fused battery will burn up the wire and probobly burn your car to the ground. You MUST fuse both ends to protect the wire from overloading in case of a short.

[Robby Holmes]

Fusing just one end is totally pointless, if you have a positive wire in between two batteries, and only fuse one end and the wire shorts somewhere, the un-fused battery will burn up the wire and probobly burn your car to the ground. You MUST fuse both ends to protect the wire from overloading in case of a short.

this guys, is a genius.

helps any/everyone and is usually right.