help with second battery

[phemps 10+ year member]

Why not just get agm for your underhood batt too?

although technically the lead acid is better for starting, if you get an agm for up front you wont have to worry about an isolator

 

[Bomtillington]

all the batteries are shurikens they are just all different sizes.

 

[black05alti]

although technically the lead acid is better for starting, if you get an agm for up front you wont have to worry about an isolator

Exactly. An agm will still be perfectly fine for starting

 

[Bomtillington]

yes i can do that but will it be safe to wire the three together? because i plan on putting in a big amp that requires some juice so i have the three batteries and a 120 amp alternator

 

[black05alti]

How big is the amp

 

[Bomtillington]

there has to be a electrical switch that stop current when car is off but allows the batteries to act as one big one when the car is on. it would be like a remote switch on an amp but for flow between batteries

 

[phemps 10+ year member]

yes i can do that but will it be safe to wire the three together? because i plan on putting in a big amp that requires some juice so i have the three batteries and a 120 amp alternator

yea you can go for it with the batts. but 120 is a pretty small alt if you plan on running some hefty power, remember when your car is running that most draw is from the current produced by the alt itself, having alot of batteries will not make up for a small alt

 

[Bomtillington]

i thought about running two hifonics 2000ds and plan on the 220 amp alt

 

[phemps 10+ year member]

i thought about running two hifonics 2000ds and plan on the 220 amp alt

thats much better

 

[Bomtillington]

okay so i got my battery in today and there is no way its gonna fit in the battery tray can i have it so the batteries are disconnected when the car is off and reconnect the when its on?

 

[clickclickw00t 10+ year member]

What kind of battery did you get? You shoulda measured and checked the dimensions before ordering... See if you can exchange

 

[Bomtillington]

i bought it from someone here and i got it to fit but for some reason it wont charge on the alt my other battery does but this one wont and it doesnt have enough to turn the motor idk what to do