Battery install.

[KTMrida4life 10+ year member]

Just to let you know, it won't hurt anything to run both of those batteries on the same circuit with no isolator. The battery with the lower resting voltage will drain the other battery down towards the lower resting voltage. Anything over 12.5V is considered good, so I wouldn't worry. its common to see charging systems spike up near 15V when an accessory kicks off after running. Anything more than about 13V is enough to actually charge the battery.

Thats how Im running them, no isolator. "New" AGM battery was at 12.47V when I measured today, my Duralast likes to sit at 12.3. Should be good.

I didn't post how things went. I'm still getting voltage drop but nothing like it was, its probably safe to say at least a whole 1v better according to my cigarette lighter volt meter lol. Im not sure how accurate this thing is. Before I did this new battery, the clock under my speedos backlight would flicker, as well as my interior lights, and my headlights. Now I dont have any flickers... even while according to it, I'm still going down in voltage. While driving, lowest I saw it hit was 13.2V. Sitting still with car running it drops down pretty good, saw it hit 12.0V again. Gave it a sec to rejuice and it stayed up higher.

I think it was worth it, I've at least tripled my cars total aH/RC

 

[disturbed471985 5,000+ posts]

^^ do it right and get ur voltage reading from ur amps terminals!!! But dropping to 12v is not what I would expect for a 150amp alt and said batts and said equipment in ur sig. But as long as ur happy then thats all that matters have fun bro.

 

[KTMrida4life 10+ year member]

^^ do it right and get ur voltage reading from ur amps terminals!!! But dropping to 12v is not what I would expect for a 150amp alt and said batts and said equipment in ur sig. But as long as ur happy then thats all that matters have fun bro.

Even with the car just idling you dont think thats normal? If I rev it to about 1200-1300 revs it stays 13+

Maybe the amp is clipping a bit. I want bigger.

 

[kramer_212 10+ year member]

Even with the car just idling you dont think thats normal? If I rev it to about 1200-1300 revs it stays 13+
Maybe the amp is clipping a bit. I want bigger.

not sure if it was mentioned, but what does your alt put at at idle?

 

[CAT MAN 5,000+ posts]

holy crap what a battery //content.invisioncic.com/y282845/emoticons/omg.gif.05aa02c3095d6ce9338996654eca0863.gif i totally want to go get one now

 

[VWBobby 10+ year member]

If you are getting voltage drops like that, you need to fix the issue.... I agree about measuring the voltage at the amp terminals. You really need to know what your amp(s) are seeing for voltage. If its dropping into the 11's at your amp, its only a matter of time before it blows or starts to overheat.

Tony30cl, love the cat sig's you have! That fat cat looks like one that we used to have....

 

[CAT MAN 5,000+ posts]

If you are getting voltage drops like that, you need to fix the issue.... I agree about measuring the voltage at the amp terminals. You really need to know what your amp(s) are seeing for voltage. If its dropping into the 11's at your amp, its only a matter of time before it blows or starts to overheat.
Tony30cl, love the cat sig's you have! That fat cat looks like one that we used to have....

thanks bro! im the cat supporter of the forum lol

 

[QuietEclipse29 10+ year member]

Even with the car just idling you dont think thats normal? If I rev it to about 1200-1300 revs it stays 13+
Maybe the amp is clipping a bit. I want bigger.

Said a couple times already but get voltage from amp, im reading around 14.4 at idle stock like 60amp alt in my eclipse lol. One batcap 3000 only.

 

[KTMrida4life 10+ year member]

Said a couple times already but get voltage from amp, im reading around 14.4 at idle stock like 60amp alt in my eclipse lol. One batcap 3000 only.

Can I just use a DMM while playing music? Dont feel like buying another volt meter unless I have to.

I kinda want to upgrade my amp... anyone wanna buy a Lanzar Opti2k? I'll sell it to you for what I paid for it. PM me

If I did upgrade my amp, can 3 SA 8s handle 2500W+ RMS? Will it be any louder than 1800W RMS?

 

[CAT MAN 5,000+ posts]

Can I just use a DMM while playing music? Dont feel like buying another volt meter unless I have to.
I kinda want to upgrade my amp... anyone wanna buy a Lanzar Opti2k? I'll sell it to you for what I paid for it. PM me

If I did upgrade my amp, can 3 SA 8s handle 2500W+ RMS? Will it be any louder than 1800W RMS?

ill pick it up if the price is right

 

[QuietEclipse29 10+ year member]

Can I just use a DMM while playing music? Dont feel like buying another volt meter unless I have to.
I kinda want to upgrade my amp... anyone wanna buy a Lanzar Opti2k? I'll sell it to you for what I paid for it. PM me

If I did upgrade my amp, can 3 SA 8s handle 2500W+ RMS? Will it be any louder than 1800W RMS?

nice amp for sure but no funds for spare stuff for me. I've done 3 sa8's before in my old jeep but only with a AQ2200 so i wouldn't know. Seems like they will take 2500rms no prob but im not 100%

 

[VWBobby 10+ year member]

Can I just use a DMM while playing music? Dont feel like buying another volt meter unless I have to.....

If I did upgrade my amp, can 3 SA 8s handle 2500W+ RMS? Will it be any louder than 1800W RMS?

Yes, you can use a DMM. It won't respond very fast but it will give you an idea of what you are seeing for voltage. If you play a test tone, 50hz lets say, it will give you enough time to measure the voltage drop and also show you how long your system can maintain that voltage when the bass hits. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

2500W will be a little louder than 1800W, but it won't be night and day. It takes roughly double the power to make a 3DB increase.....At least that's the theory. In real life it depends on the install, as always. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

http://www.caraudio.com/forums/general-discussion/378674-doubling-power-3-db-increase.html

 

[KTMrida4life 10+ year member]

Yes, you can use a DMM. It won't respond very fast but it will give you an idea of what you are seeing for voltage. If you play a test tone, 50hz lets say, it will give you enough time to measure the voltage drop and also show you how long your system can maintain that voltage when the bass hits. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
2500W will be a little louder than 1800W, but it won't be night and day. It takes roughly double the power to make a 3DB increase.....At least that's the theory. In real life it depends on the install, as always. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

http://www.caraudio.com/forums/general-discussion/378674-doubling-power-3-db-increase.html

OK. Well I'll stick with my amp, maybe I'll get different subs someday. Problem in my car is space.. I have about 2cuft to work with.. a monster 12 would work, or 2 sealed 10s..

Also, after I added this battery.. my resting voltage with the car off only went up to 12.4 from 12.3. That sound right? Battery was only at 12.6 or so when I measured it.

 

[Epic0318 10+ year member]

how much did you get that battery for? theres a recycling center about 20 mins away from me and now im interested in doing that.

 

[CAT MAN 5,000+ posts]

dont tell him will..... i dont need my secret out :/ even tho i went to kinitik lulz