tieing two batterys together
 

i need some info on tieing batterys together

im installin a system on a guys boat and cant find a good place for a ------- ground that isnt 15 feet away, and he has a spare battery over by where the amp and sub will be, so i figured i could tie the two together and get a good ground off the battery

what do you guys think? ------ fiberglass is a bitch to find a place to ground on

sorry mods if this is in the wrong place, didnt know where to put it

Re: tieing two batterys together
 

i wouldnt tie both batterys together because unless they are the same age/size/type/brand they might discharge eachother. You can use a battery isolator but id just get 2 of the same batteries or get a bigger one

Re: tieing two batterys together
 

the problem isnt power, its finding a ground for the amp

the batterys are the same size, and approximately the same age, i honestly dont think brand has much to do with anything

i just need ideas to find a good ground for this amp besides haveing to run a ground wire thats 15 feet long

Re: tieing two batterys together
 

so you just want to tie both battery grounds together?

Re: tieing two batterys together
 

i want to be able to use the ground terminal on the battery up front while its tied to the one in the back basicly so i have a nice ground for the amp

Re: tieing two batterys together
 

that should be fine

Re: tieing two batterys together
 

how do i need to wire the terminals? positive to positive and ground on the chassis or some other way?

Re: tieing two batterys together
 

you might wana get an expert opinion on this... isn't something i would want to skimp out on.

however it seems like you want to connect two batteries together... what's the need to connect the terminals? Just source the ground for battery A and share that with battery B [either by the ground point, or splicing the ground wire]. There seems to be no point in connecting the positive and negatives of the two batteries together especially since you say there is no issue with power [which would seem to be the only reason you would want to connect two batteries together to run in series for some more juice].

Again no expert here

Re: tieing two batterys together
 

just get a really long cable and connect it to your boat trailer. Then it'll look like a really big remote control boat. Ghetto style even with the cord still. 8)

Re: tieing two batterys together
 

If you run 2 batteries together in series its going to have 12 cells @ 2.15v a cell, you're going to be pushing 25.5v through the system and you'll fry your ----.

just run a thicker gauge ground wire back to something you can ground on.