battery question

[treadburner 10+ year member]

from what ive been reading 100 ah battery is good for 1000watts

but where is the point were u need a bigger alt

for instance if i had 4 100ah batts on 3.5k would i be ok daily or still need an alt

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[treadburner 10+ year member]

ttt

 

[dipitydoo 10+ year member]

your alternator is there to charge your battery and run the accessories of your car. the simple answer is, if your alternator can't properly charge the batteries, then you need an alternator that is capable of doing it. reading your above post, if you had 4 batteries hooked up to a stock alternator, you can pretty much bet your rear end its not gonna be able to charge all four.

your system goals will determine if you need additional batteries, high output alternator, or both. but generally, multiple batteries on a stock alternator isn't a good idea.

 

[audiobaun 5,000+ posts]

I agree with that..above.

 

[treadburner 10+ year member]

thats what everyone says but i do know this much,

an amp does not draw power constantly,

so when people say your alt needs to cover as much power as your amp draws is false

like for instance bass hits for 3 seconds then off for 2 seconds, it will charge batts during the 2 secs

 

[treadburner 10+ year member]

still nothing?

 

[slvrado28z 10+ year member]

why not just one big battery instead of 4

 

[treadburner 10+ year member]

i already have them and they r big

 

[slvrado28z 10+ year member]

oh well hook em up and see..you might be fine

 

[treadburner 10+ year member]

amp will be here tomorrow

 

[05trailblazer 10+ year member]

for sure you'll mess up the alt overload

 

[sacsking916 5,000+ posts]

your going to need an alt more than likely. what kind of car is it? do you know the amperage of your stock alt?

 

[treadburner 10+ year member]

110 amp alt 98 blazer

had an aq 2200 on just one 9a31 and it never dropped under 12.7

 

[Imtjnotu 5,000+ posts]

ur alt wont be able to recover for the batteries over time and u will either burn up your alt or constantly need to charge all of your batteries

 

[audiolife 5,000+ posts]

An alternator is not a battery charger it is a very basic maintainer that shouldn't be allowed to charge up a dead battery or deal with a sulfated battery. A sulfated battery is an under charged battery that will not recharge smoothly.