does battery affect voltage?

[photocrazy8 10+ year member]

Does the brand or style or model of battery affect the voltage of the car? At idle? While driving? Thanks, Andrew

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[2loud4u 10+ year member]

Good question.

When the car is off forsure. some batteries will have more voltage when no power is drawn.

Not sure about when the car is running or not.

 

[bamaboy 5,000+ posts]

shouldnt have any affect really while the car is on, unless you have a ton of dead batt that one alt is trying to charg, the only way i see voltage drops

the regulator on the alt controls voltage

my optima hold a 13.1volt with the car off, getting scotties G31 tomorrow

 

[photocrazy8 10+ year member]

shouldnt have any affect really while the car is on, unless you have a ton of dead batt that one alt is trying to charg, the only way i see voltage drops
the regulator on the alt controls voltage

my optima hold a 13.1volt with the car off, getting scotties G31 tomorrow

yea thats what i was thinkin but i just wanted to make sure cause sonicelectronix.com now stocks all the kinetik batteries so im just lookin at my options right now. but im leaning towards optima cause the size is perfect for my tahoe... kinetiks are too tall //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[stuckinok 5,000+ posts]

shouldnt have any affect really while the car is on, unless you have a ton of dead batt that one alt is trying to charg, the only way i see voltage drops
the regulator on the alt controls voltage

my optima hold a 13.1volt with the car off, getting scotties G31 tomorrow

x2

with the stock bat my car was @12.5 off and 13.6 on....now with a yellow top and 120a alternator it sits at 13.4off and 14.1 on

 

[photocrazy8 10+ year member]

x2with the stock bat my car was @12.5 off and 13.6 on....now with a yellow top and 120a alternator it sits at 13.4off and 14.1 on

so is the conflusion that the voltage regulator in the alt controls the voltage of the car?

 

[wesl56 10+ year member]

so is the conflusion that the voltage regulator in the alt controls the voltage of the car?

nope, just what the alternator puts out

 

[photocrazy8 10+ year member]

nope, just what the alternator puts out

what do you mean. the voltage regulator in an alt controls the voltage that the alt puts out

 

[scottiej 10+ year member]

what do you mean. the voltage regulator in an alt controls the voltage that the alt puts out

You are correct, but certain batteries may accept charge faster than others allowing the battery to reach a full state of charge quicker and allow the voltage to hold higher while the alt is charging.