Is a Capacitor worth it?

[haloweenhamster 10+ year member]

personly i would get both

say a 50-80Ah batt

1-5F cap

both as close to the amp/s as possible

if ur gettin dimmin lights i would go for a batt first

and like i said before i cannt notice the difference of a cap untill im running about 800W into my sub

 

[Stalin-ohaulic]

Where are your amps grounded? Also, the only way a batt can help with dimming is if you replace the batt up front from one with a higher esr to one with a lower esr. Then it helps because it is less strain on the alt.

 

[haloweenhamster 10+ year member]

batts in parallel

resistors in parallel

same thing

2 batts esr=1/rt=1/batt1 imp + 1/batt2 imp

so if both have same esr it will half it right?

r u proven wronge?

and i have already stated that the lights dimming wont be a amp ground problem

if it was a ground problem it would be with ur big3

so a second batt is ur best quick fix

if u want to improve from that its up2 u

and that alt should be capable of runnin the car & his amp unless he has everythin on high all the time ie fans,lights, heaters, stereo, everythin

 

[AlterEgo99 5,000+ posts]

Where are your amps grounded? Also, the only way a batt can help with dimming is if you replace the batt up front from one with a higher esr to one with a lower esr. Then it helps because it is less strain on the alt.

Although I've been told from Perry himself (dude that created and runs http://www.bcae1.com/) that it is quite difficult to "test" for good ground, I used his recommendations and did so with my DMM. I used to have everything grounded (amps, HU, relays, etc.) to the same point under the center dash, but of course that meant my ground run for the amps was at like 3 to 4 feet. Both amps are located in my center console. Believe it or not, **** little room for amps in my truck. If I tried to add a cap or two, they would end up probably under the rear seat, so they would be 4+ feet away from the amps.

Some say amp grounds should be as short as possible, some say it doesn't matter. So I moved the amp grounds to under one of the bolts that secures the front passenger seat to the floor. Yes, I took my grinder and removed all of the paint down to bare metal and tested the location as best I could using Perry's advice. This makes my ground run under 2 feet. I also tested the grounds by running a temporary run directly to the negative post on the battery. No difference that I could tell.

Also, I think my Kinetik as a pretty low ESR.

 

[AlterEgo99 5,000+ posts]

batts in parallelresistors in parallel

same thing

2 batts esr=1/rt=1/batt1 imp + 1/batt2 imp

so if both have same esr it will half it right?

r u proven wronge?

and i have already stated that the lights dimming wont be a amp ground problem

if it was a ground problem it would be with ur big3

so a second batt is ur best quick fix

if u want to improve from that its up2 u

and that alt should be capable of runnin the car & his amp unless he has everythin on high all the time ie fans,lights, heaters, stereo, everythin

I think my "Big 3" upgrade is pretty sound. If I added a 2nd battery, which there is actually an empty battery tray under my hood, what is the thought at using an isolator to isolate the car audio battery from the OEM electrical/starter battery? Worth the hassle?

 

[jdawg 5,000+ posts]

I think my "Big 3" upgrade is pretty sound. If I added a 2nd battery, which there is actually an empty battery tray under my hood, what is the thought at using an isolator to isolate the car audio battery from the OEM electrical/starter battery? Worth the hassle?

not really, i would just parallel them both so they act as 1 large battery, you are best off though to have matching batteries

 

[haloweenhamster 10+ year member]

not unless u run ur sound without the car running for long periods of time

to be honest i didnt think it was a ground

and if u fit a second batt u will probibly notice ur truck crankin easyer and ur stereo and lights will stay on when u crank as the supply wont fall as much

 

[AlterEgo99 5,000+ posts]

not really, i would just parallel them both so they act as 1 large battery, you are best off though to have matching batteries

Kinda what I figured...I've got a Kinteik HC2000 up front that barely fits in the OEM tray where the OEM AC Delco was located (passenger side up against the firewall and fender well)...the other battery tray in the "standard" GM location directly behind the driver side headlight is about an inch or two shorter...if I used another HC2000 it would hang off the end a bit but I am sure I could secure it. MacGyver fixes are my specialty. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[AlterEgo99 5,000+ posts]

not unless u run ur sound without the car running for long periods of timeto be honest i didnt think it was a ground

and if u fit a second batt u will probibly notice ur truck crankin easyer and ur stereo and lights will stay on when u crank as the supply wont fall as much

Thanks mate! Cheers!

 

[haloweenhamster 10+ year member]

most batts fall to 7/8V when u crank

and the voltage reg in an alt isnt very stable as they use high power reggys rather than persision

costs to much to be both

so with heavy varing loads the alt voltage can fall easly so the battery has to pickup the slack so 2 batts will greatly improve this

but as loads fall or stabilise the alt picks back up and charges the batts back up

i think thats what other people was tryin to say earlyer

also how a cap can help

 

[Stalin-ohaulic]

batts in parallelresistors in parallel

same thing

2 batts esr=1/rt=1/batt1 imp + 1/batt2 imp

so if both have same esr it will half it right?

r u proven wronge?

and i have already stated that the lights dimming wont be a amp ground problem

if it was a ground problem it would be with ur big3

so a second batt is ur best quick fix

if u want to improve from that its up2 u

and that alt should be capable of runnin the car & his amp unless he has everythin on high all the time ie fans,lights, heaters, stereo, everythin

is it the same thing? What do you think ESR stands for? Answer that and you'll know you're wrong. Basically what you're trying to say is that if you ad 1 million batteries that it wouldn't be a bigger load on the system? As we know with resistors, when we parallel them we are only adding more paths and that's why the resistance lessens. With batts, you're adding NOT just paths but load in itself. Previous posters already established that amps have esr. So are you saying that adding a ton of amps actually LOWERS the resistance in the system lessening the load on the alt? Your logic is horribly flawed. Please refrain from talking anymore.

Also, I must have missed where you stated that an amp ground couldn't cause dimming. Care to explain?

Edit: You didn't say it couldn't, you just said you didn't think his WAS the problem... gotcha. I wouldn't be so quick to abandon the grounding issue as that is usually the problem.

 

[haloweenhamster 10+ year member]

Please refrain from talking anymore.

**** u ****

2 bulbs in parallel attatched to a batt yes understand so far

now put a resistor in series with 1 bulb (higher resistance return path) still understand

now does that effect the other bulb?

esr is the resistance (equivalent series resistance)

got it?

 

[AlterEgo99 5,000+ posts]

Oh man...here we go again. //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[haloweenhamster 10+ year member]

and his alt will be able to run his system with 2 batts

u can run 1 mill batts on 1 alt as long as they are charged so whats ur problem?

 

[haloweenhamster 10+ year member]

sorry i know ur just tryin to get a reasonable answer for ur problem thats y i posted but the **** had to come back