puttin extra battery in

[zack1442 10+ year member]

so i have everything simple and stock electrical as of now, i was thinking of soon puttin an extra batter in the trunk so is there anything else i need to do like maybe a different battery in the hood or is that one ok..i dont wanna put a hole lot into this just add another battery n need help knowing what else i must do to do this..and i believe my alt is like 75 amp if that is important

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[91Chevy 10+ year member]

Upgrade your main battery first. After that, get a bigger alternator if necessary.

 

[zack1442 10+ year member]

is it a must or can the battery in there stay..the car isnt all that great so im not looking to upgrade the entire electrical cuz this car is bound to go out on me sooner or later i just want to make it alittle better for the amp n sub

 

[99grandprixGT 5,000+ posts]

id do better under hood batt and big 3 and see what happens.

 

[pentavolvo 10+ year member]

or atleast do the big3 and go from there.

with a system of that size there really is no need for a 2nd battery

For example in my 97 cavalier on a stock alternator 90amp or whatever, with just a generic autozone battery (only cause the oem one crapped out over time). I ran big 3 1400wrms sub stage, and 100x2 for my components up front. Did I get dimming yeah, but did I ever have a problem in 3 years no

 

[zack1442 10+ year member]

alright well sounds good ill prolly go big 3 at least, i just thought another battery might help out alittle but maybe ill do that with the next amp or so

 

[1rockford1 5,000+ posts]

i had a 99, do big 3 1/0 and front battery first. use 1/0 for amp/ground. and go from there