Alternator and batteries?


Bronze Member
Username: Clawless

Shreveport, La

Post Number: 26
Registered: May-08
Im tryn to figure out what amp alt to get and how many batteries i need? Im running 4500 watts. I was thinking 220 amp and two battiers.I need brands also

Silver Member
Username: Shade

Moxee, Wa U.S.

Post Number: 698
Registered: Nov-06
what kinda car? and budget?

Silver Member
Username: Deadrabit

Post Number: 620
Registered: Jun-07
at 1ohm load>?

Gold Member
Username: Jakeyplaysbass

St. Louis, MO / ASU

Post Number: 3194
Registered: Jul-05
"at 1ohm load>?"

x2. That would be insane.

Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 7938
Registered: Jul-06
For that amount of power you need the biggest alternator you can get. DB Electrical and motor city reman make good ones.

I'd probably also do a 2nd battery with an isolator.

Gold Member
Username: Tatonka

-[Team Audible Insanity]-

Post Number: 2015
Registered: Mar-07
What kind of amp is producing this "4500rms"?

Your charging system will depend strictly on how efficient the amps is.

I would go with a the biggest alt for your car (why not? might want to upgrade again later) and also another battery in the back. Isolator is not required at all unless you want to separate the two batteries.
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