2 Batteries, and Car Still Goes Dead??

[hoodkid 10+ year member]

I just had the Big 3 done, and added a 2nd battery to my system, and not to mention I haven't been running my kx2500.1 for the last week because I blew my Type R, and today I tried to start my car and needed a boost from my freind //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif, i thought that now since I have an extra battery in the back i would never have to worry about this, so do yall think its something wrong with my alternator, or my batteries, and not to mention that my battery upfront is only 6 months old.

Click to read more...

 

[andytb 10+ year member]

its probably both now

 

[andytb 10+ year member]

bad alternator. killed your batteries

 

[hoodkid 10+ year member]

that might be it, maybe the strain of 2 batteries kilt it?

 

[iceteebone 5,000+ posts]

Why did you think adding more strain to your electrical system would help? //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif Also if you wired your batteries without some sort of isolator, the second one could've drained the under the hood battery.

 

[hoodkid 10+ year member]

Why did you think adding more strain to your electrical system would help? //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif Also if you wired your batteries without some sort of isolator, the second one could've drained the under the hood battery.

this might be the cause also, so probally should go get my alt checked out and if its good then I should get an isolator?

 

[andytb 10+ year member]

i never had a problem from draining and ive never had an isloator

 

[hoodkid 10+ year member]

my alt seems to be running fine though but guess ill have to wait till tomrrow to find out the cause of this.

 

[bookechu 10+ year member]

i never had a problem from draining and ive never had an isloator

same here

 

[hoodkid 10+ year member]

another thing is I do have my radio on when the engine is off my a couple hours every other day though when where just chillin in the parking lot with my girl, but of course I have the music down very low so should I invest in an isolater?

 

[Jacobman 10+ year member]

This may be dumb but maybe a strand of your power wire is touching the remote turn on spot leaving your amp on all the time.

 

[IgnoreMe 5,000+ posts]

check the batts with a multi meter and let us know the voltage.

you also need to check your terminals on the underhood battery. dont just look either. physically remove the terminal and check for corrosion.

its quite common to have starting problems because you have gunked up terminals. maybe a take some install shots as well?

 

[hoodkid 10+ year member]

check the batts with a multi meter and let us know the voltage.
you also need to check your terminals on the underhood battery. dont just look either. physically remove the terminal and check for corrosion.

its quite common to have starting problems because you have gunked up terminals. maybe a take some install shots as well?

when I replaced my starter about 5 month ago I checked for corrosion, and cleaned everything so I doubt its that but I'll put some picks up later.

 

[Beerdrnkr 5,000+ posts]

If you have a different battery in back than the one in the front that could be the cause of it.

 

[mlstrass 5,000+ posts]

Have you put a DMM on the alt? What's it putting out at idle and above 2000rpm? Otherwise you might have a current draw somewhere slowly killing them.