problem

[K&c Customs 10+ year member]

i have a 97 jeep grand cherokee and it has a new battery.. on it.. ok i have a quantum 1500d amp pushing my 2 15 in L5's at 1 ohm and my batt gauge goes from 12 to 9 and my battery won't stay charged for some reason.. sometimes it will crank right up.. i need some advise..

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[jj4475 10+ year member]

9 is bad man very bad

 

[K&c Customs 10+ year member]

what would cause that.. i have 2 gauge wire, and a 100 amp anl fuse...

 

[K&c Customs 10+ year member]

the gauge just bounces when the subs hit real hard...

 

[zachzchw 5,000+ posts]

Have you done the big three?

Any other upgrades?

 

[K&c Customs 10+ year member]

nope jsut 2 gauge wire that goes to the amp ... and i done a 4 gauge ground to the batt and thats it..

 

[smd4life 5,000+ posts]

do the big three, i've got a orbital deep cycle batt ill sell you too if you ever come up here

 

[K&c Customs 10+ year member]

lol aight

 

[JunkTitleGolf 10+ year member]

I've destroyed a cheapo walmart battery and that's with doing the big 3.

 

[Prowler573 5,000+ posts]

i have a 97 jeep grand cherokee and it has a new battery.. on it.. ok i have a quantum 1500d amp pushing my 2 15 in L5's at 1 ohm and my batt gauge goes from 12 to 9 and my battery won't stay charged for some reason.. sometimes it will crank right up.. i need some advise..

With that drastic of a voltage drop I'd say you don't have near enough alternator to supply the needs of your Jeep + the current demands created by your audio gear.

Upgrading the Big 3 will help to a small degree but I would suggest it won't nearly completely cure the problem.

Definitely you need to do the Big 3 but I would suggest you have an investment in a High Output alternator in your near future.

Keep discharging your battery that severely it will fail...and most likely sooner than later.

 

[K&c Customs 10+ year member]

yeah thanks for the help prowler

 

[K&c Customs 10+ year member]

and the others people that have helped me