Voltage dropping irregularly

[spare69 2]

I just put in a new box in my 1999 jeep grand cherokee and I reattached the back battery, In doing so I noticed my voltage is at an average of 12.6 with little bass. My voltage is going crazy and im not sure what is going on. Normally at full tilt on rock, the voltage plays at 12.8, But now its at 12.2......

My Interior lights are now feeling the power drops and dimming everytime a bass note hits.....as before it wasnt doing that......any ideas?? My alternator is working i had it checked today.....

Also might i add that with the bass off my voltage goes from 13.6- to 12.8....with no bass...only mids and highs......wtf?!

Edited October 7, 2012 by spare69

[Frostedflakejake 148]

Check connections to and from the battery. Especially the ground and alternator lead into the battery.

What's your voltage at with no music at idle?

[spare69 2]

Check connections to and from the battery. Especially the ground and alternator lead into the battery.

What's your voltage at with no music at idle?

where it should be around 13.7

[Kangaroux 47]

Double check your grounds, and charge each battery individually overnight with a good 2A charge

[Sencheezy 689]

My guess is alt is dying.

[pmureika 31]

Check connections to and from the battery. Especially the ground and alternator lead into the battery.

What's your voltage at with no music at idle?

where it should be around 13.7

Usually it should be close to 14.4 above idle.

[bassahaulic 155]

Check connections to and from the battery. Especially the ground and alternator lead into the battery.

What's your voltage at with no music at idle?

where it should be around 13.7

Usually it should be close to 14.4 above idle.

Most Chrysler vehicles charge around 13.5-13.8v.

[spare69 2]

I actually found the problem....... 1 of the 2 grounds i have on the back battery didnt have a grreat connection on the top post, so i moved 1 of them to the side post and now my voltage is stiffer now, back to normal thank god. and yea i thought it was the alternator for awhile there too!

[pmureika 31]

Check connections to and from the battery. Especially the ground and alternator lead into the battery.

What's your voltage at with no music at idle?

where it should be around 13.7

Usually it should be close to 14.4 above idle.

Most Chrysler vehicles charge around 13.5-13.8v.

Than why does my stock 2009 jeep liberty do 14 to 14.8 volts with no amps running. At the battery.

[pmureika 31]

Check connections to and from the battery. Especially the ground and alternator lead into the battery.

What's your voltage at with no music at idle?

where it should be around 13.7

Usually it should be close to 14.4 above idle.

Most Chrysler vehicles charge around 13.5-13.8v.

Than why does my stock 2009 jeep liberty do 14 to 14.8 volts with no amps running. At the battery.

[ssh 924]

Actually your voltage is 14259. You should get that looked at.

[Dictator 39]

Actually your voltage is 14259. You should get that looked at.

lol...yeah i think your battery is dipping to low check that out quick!

[pmureika 31]

Actually your voltage is 14259. You should get that looked at.

lol...yeah i think your battery is dipping to low check that out quick!

You didnt look close it says 14.259. The meter was on the 40 vdc scale. Sorry about the crappy pic.

[ssh 924]

Actually your voltage is 14259. You should get that looked at.

lol...yeah i think your battery is dipping to low check that out quick!

You didnt look close it says 14.259. The meter was on the 40 vdc scale.

No I don't think so.

[pmureika 31]

Actually your voltage is 14259. You should get that looked at.

lol...yeah i think your battery is dipping to low check that out quick!

You didnt look close it says 14.259. The meter was on the 40 vdc scale.

No I don't think so.

I know so, it was 14.259 vdc.lol

[ssh 924]

Actually your voltage is 14259. You should get that looked at.

lol...yeah i think your battery is dipping to low check that out quick!

You didnt look close it says 14.259. The meter was on the 40 vdc scale.

No I don't think so.

I know so, it was 14.259 vdc.lol

I guess we'll never know!

[pmureika 31]

Actually your voltage is 14259. You should get that looked at.

lol...yeah i think your battery is dipping to low check that out quick!

You didnt look close it says 14.259. The meter was on the 40 vdc scale.

No I don't think so.

I know so, it was 14.259 vdc.lol

I guess we'll never know!

You want a better pic?

[ssh 924]

I'm just busting your balls man.

[pmureika 31]

I'm just busting your balls man.

I'm cool with that. I have read that normal charging voltage is 1.5 to 2.0 volts above battery voltage with nothing on. other than the engine running.

[spare69 2]

I love it when my posts get blown up like this lol!