how much w rms can a 110 amp alternator handle

[Nico Koutouzis 10+ year member]

Hey guys I was just wondering how much a 110 amp alternator can power SAFELY. I'm looking for an rms type of thing. I am also doing a big 3 upgrade. Please lmk

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[mylows10 5,000+ posts]

depends on what your car draws too

 

[Nico Koutouzis 10+ year member]

It's a 2003 g35 coupe if that helps

 

[UnderFire 10+ year member]

An amp isn't always drawing the rated power, only when driven to clipping it maxes out, and there are numerous factors that effect how much the amp draws, including operating efficiency, temperature, and system voltage. Also since music is dynamic, it helps to know what you listen too.

 

[subzero 5,000+ posts]

I was told it is 1kw for ever 70 amps. if your alt is charging during driving play, you should be getting max charging around the 110amps. and if your using 30amps on the car and listening to a system, around 1kw total peak power you might still see some diming or loss on recharging capabilities. but if you dont listen all the time and not full tilt you should be ok.

 

[Nico Koutouzis 10+ year member]

Do u think it can handle a 1200-1400w rms system?

 

[thegreatestpenn 5,000+ posts]

that'll be just fine. you'll get drops, but an upgraded batt should help with that

 

[Fiendstolemyamp 10+ year member]

Do u think it can handle a 1200-1400w rms system?

Most likely yes, w/ big 3 done.

 

[disturbed471985 5,000+ posts]

Like already stated u should be ok but u will get some good drop. Anything lower than 13.5 I deem unacceptable. Will it hurt anything if I drop to 12.8 no but it sure doesn’t help.

 

[audiobaun 5,000+ posts]

I recommend another battery to compensate for what you are trying to accomplish

 

[dipitydoo 10+ year member]

really depends on a lot of factors. one of the most important is your music selection and listening habits. if you constantly crank up continuous bass heavy music for extended periods, your battery won't charge properly. hook up your system first, then go from there.

a second battery will help to reduce dimming / voltage drop somewhat, but it will also make it more difficult for the alternator to properly charge both of them.