Brutus 1500 Bd Question

[audioholic 5,000+ posts]

A car will run off the alternator alone, once the battery starts the engine.

You are both right, sort of. The alt is there to supply current to replenish the battery, but the battery does not regulate voltage if/when the alternator exceeds the batts voltage. The system sees the higher voltage from the alt.

Upgrading a battery reduces resistance in the circuit. Additional batteries are indeed only for extending engine-off playing time.

 

[TheSSG]

Good Lord Teds. You're wrong.

"He's full of $hit"

Great way to argue your side.

You said, "Start your car, then disconnect the battery and see how well your stereo plays"

Ok, not to be a jackass here but, "Start your car, then disconnect the battery and see how well your stereo plays." Now, if your theory is correct, wouldn't the car stop working? Where would the power for the spark plugs be coming from?

Reroute your amps to your alt, then do this, not only will your car still run, but so will your amps.

Battery is for starting and when your demands exceed your alt's capabilities.

The alternator is a generator, when the pulley's moving, it's making electricity, electricity for your car to use.

Again, not trying to be a dick or anything, I apologize if it seems that way.

Also, adding batteries WILL increase the playing time with the engine off, but it can also help with the car on.

When your needs > you alt's capabilities, the Battery kicks in, if you do this enough, the battery will die. Adding another battery will increase how much you can do this before it dies. If this is happening though, you need to get a better alt, you should not be draining your battery(ies) constantly, especially if they can't recouperate.

 

[DBfan187 5,000+ posts]

So are my beliefs correct then?

 

[TheSSG]

Yes, you are correct.

 

[DBfan187 5,000+ posts]

Yes! I am correct for a change!//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Acidburn 5,000+ posts]

yep, Mike, we were right, go us

 

[DBfan187 5,000+ posts]

yep, Mike, we were right, go us

True!

We RULEZ!

 

[teds147 10+ year member]

Ok, not to be a jackass here but, "Start your car, then disconnect the battery and see how well your stereo plays." Now, if your theory is correct, wouldn't the car stop working? Where would the power for the spark plugs be coming from?

Reroute your amps to your alt, then do this, not only will your car still run, but so will your amps.

I didnt mean the car wouldnt run, the car will run without anything being rerouted, and your amp will also be dimming your head lights 4 times worst than before, the battery keeps the voltage from dropping too low when excessive amps are being pulled out

Beisdes that your other points are not stuff i said was not true i agree with you that batteries will help, and thats why this all started because ACIDBURN claimed that the batteries werent used when power was on, besides that of course the alternator acts as a generator.. it uses engine power to make electricity.

I still was not wrong with anything I said and if so please explain what i am wrong about!

 

[TheSSG]

I think the problem is you just explain things very poorly.

By saying, "Start your car, then disconnect the battery and see how well your stereo plays," you are implying the amps get all their power from the Battery when the car is running.

Outright you've been fairly accurate, but the implications are wrong, and just plain confusing.

Easy way to explain is:

Car off:Battery. Car on: ALternator. Too much power with car on: Battery.

If the point of contention is the "batteries don't help a system with a car when it's on," I think you should have stated that outright. We got the impression you meant they were what Runs EVERYTHING, ALL THE TIME, which is wrong, so that's why we got our feathers all ruffled. We thought you were arguing, "The alternator powers the car when it is on."

Aber alles ist klar jezt!

 

[Vectork39 10+ year member]

wow...get a volt meter like everyone says, put it to + and - terminals, it should be around 12.6 or so, then start the car, it should be about 14.4 or so

think about itm then you will realize that this is a pointless argument

 

[3.5Max6spd 10+ year member]

^^^^You are wrong, a car at idle doesn't run at 14.4 volts- an alternator will create a peak of 14.4v at much higher rpm(redline)- car runs in the 13's af far as voltage goes during normal drving

I dont care if you have a freggin' plutonium battery- an alternator can only do what it can do- your system drains your battery making your alternator work harder to maintain voltage- whether its an optima or whether it has greater reserve means nothing- whatever

your system consumes though your battery it has to be replaced the same by the alternator- so if you are drawing too many amps for the size of your alternator, the only way to see rated power on your equipment is for you to upgrade your alternator to that which produces enough amps so that it can run all the vehicles accessories and your equipment without strain and keep a stable voltage

For instance my brother just bought a new RF amp w/ 120 amp fuse and expects to see all that power in a 105 amp alternator-along w/ his other amp.....will be replacing that alternator 'again' shortly, because he doesn't understand this as well- his dimming is so bad his headlight can barely light up the road at night (BTW he has Yellow Top)

 

[audioholic 5,000+ posts]

Weird, 2 of my 3 cars idle at 14.4 //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[OLD_SCHOOL 10+ year member]

anyone wonder why a dragster is started with an external starter ?

 

[jellyfish420 10+ year member]

wow this thread is pretty old. but for the record i would like to change my awnser to it runs off the alt.