Battery Dies

[Fender5 10+ year member]

My battery dies every winter as it gets cold. Then it'll be fine after that initial cold. Its not even that cold (20 degrees)

I do run dual batteries. Duralast in front (5yr warranty. had it for 3) and kinetik hc600 in rear with no isolator. (might be prob, idk)

i also have an aftermarket alarm, keyless entry

I do run my system pretty loud until I turn my car off. Could be another problem, idk

what do you think might be wrong

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[Phoenix Risen 10+ year member]

have you ever though of checking what your batts are resting at with a dmm, disconect them from each other one night when you park it and check it before you start the car, one of both of the batts could be bad

 

[miker 5,000+ posts]

What kind of alternator are you using? What kind of current are you drawing?

Do you have a charger? I would charge them overnight and see if that does it. Otherwise you're probably drawing too much from them, you're system is not small..

 

[Fender5 10+ year member]

my batts rest 12.5 front.. 12.3 rear with car off, both batteries still connected. havent tried without since im studying for finals. i'll check as soon as im done.

alternator is a 90amp stock honda one.

 

[Phoenix Risen 10+ year member]

what year honda?

 

[mrfantastic911 10+ year member]

i got the same problem, i recently charged them up overnight. they were resting at 12v even, after charge they sit at 12.7 and its cold as **** here. just give them a overnight charge. that will help

 

[theMessenjah44 10+ year member]

unhook the batteries and test them. in my old car they were both sitting at 12.5ish, when I unhooked my back battery, the front one was sitting at 9 volts

 

[Fender5 10+ year member]

its a 1996 accord ex v6.

glad im not the only one with this prob lol. i will definitely charge them up.

should i just drive around and have it the system down to charge it up?

 

[miker 5,000+ posts]

my batts rest 12.5 front.. 12.3 rear with car off, both batteries still connected. havent tried without since im studying for finals. i'll check as soon as im done.
alternator is a 90amp stock honda one.

You're probably drawing that much current with your amps alone, plus you have all the lights and electronics in your car.

 

[1rockford1 5,000+ posts]

call me son.

 

[theMessenjah44 10+ year member]

It's probably one bad battery or a weak alternator

 

[Fender5 10+ year member]

dang i thought i was doing good with electrical lol

im upgrading to Kinetik HC1200-1400 for the rear this coming summer

i've looked into new alternators, but they are too expensive for my car and im not planning to keep it for more than 2-3 years.

 

[1rockford1 5,000+ posts]

lets say 300-500 and u have the car for another 3 years thats good bro.

 

[1rockford1 5,000+ posts]

thats like 9.00-15.00 a month for a ho alt .

 

[miker 5,000+ posts]

thats like 9.00-15.00 a month for a ho alt .

Lmao, are you bored as ****? I never would have thought about looking at it that way. //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

The better battery will only do so much.. It will just take longer to ruin it/