Can running a second battery in parallel harm a stock alternator?

[mrpep]

I have a optimum battery on a system that is currently pushing about 1500 watts at 2 ohms . Can having this second battery in parallel damage the alternator ? I thought that it would take stress off of the alternator but am reading that the alternator works harder to keep two batteries charged. What is the scoop with a set up of this type ?

Sent from my iPhone using Tapatalk

Click to read more...

 

[Mass Car Audio 10+ year member]

it can wear it out faster

 

[BassAndBeer]

yeah because as power is pulled from the batteries your alt needs to work harder to replace the power that was just taken from them faster. that's why high output alts are better when running multiple batteries

 

[mrpep]

Is 130 amp alternator on 2 batteries with beefed up 4 gage cables sufficient for a 1500watt system ?

Sent from my iPhone using Tapatalk

 

[mrpep]

I made an error, I'm actually wite to 1 ohm. I can't edit my original post, I get an error but yes, its wired to 1 ohm and pushing approximately 1500 rms . 1200 on subs and maybe 300 on speakers .

Sent from my iPhone using Tapatalk

 

[tc300 10+ year member]

i ran two group 34 bats on stock 110 alt for 8 years before i decided to go with an HO... just do big 3 with 1/0 copper wire and good grounds.

welding wire is a GREAT option for wire also.

 

[mrpep]

i ran two group 34 bats on stock 110 alt for 8 years before i decided to go with an HO... just do big 3 with 1/0 copper wire and good grounds.welding wire is a GREAT option for wire also.

So you don't think a second battery is needed?

 

[Jeffdachef 5,000+ posts]

So you don't think a second battery is needed?

Uhm read his comment again and try to understand what stock alt, two batts and 8 years mean. He said its completely fine to run a second batt for years and years with no issues.

Fk all that bullsh*t about alternators working harder with more batts, That my corolla stock 80 amp alt never failed on me with 3 batts total to it. The batts overall did WAAAAY more GOOD than harm(if any to be honest) to my whole electrical setup back then. People too focused on what they read in books rather than going deep into real world testing and results

Makes no sense to get a high output alt when you are only running a total ~1500 rms in your setup.

 

[mrpep]

Nice, I also found it hard to believe that it would do harm, I feel it would help but it's nice to know that it works out well for so many. I'll just beef up cables and add a small second battery

Sent from my iPhone using Tapatalk

 

[mrpep]

Without laughing too hard at me , would a battery like this help or solve my issues ? I only have about 900 rms on my amp on 4 gage but I do get some voltage drops of 11.5 once is a while when a deep bass note hits.

Sent from my iPhone using Tapatalk

 

[Massive spl]

That battery is for a lawnmower lol. Get like a d34 battery

 

[mrpep]

Lol, I know but man I really want to drop 100$ in a battery

Sent from my iPhone using Tapatalk

 

[C1500martin 10+ year member]

Gotta pay to play, if you dont want to upgrade electrical turn your gain down

 

[mrpep]

Yeah I keep an eye on the voltage , eventually I'll pull the trigger and get a good battery I'm sure but I'm holding off for now

Sent from my iPhone using Tapatalk

 

[Massive spl]

Yeah I keep an eye on the voltage , eventually I'll pull the trigger and get a good battery I'm sure but I'm holding off for now

Sent from my iPhone using Tapatalk

Save $10 a week and u have a new battery in no time. //content.invisioncic.com/y282845/emoticons/nerd.gif.c6fa51ddf7ff75f1c0371fbc648f70ae.gif