Rear battery not charging!!!

[soloXgt 10+ year member]

they read 12v + independently, but
what kind of wire?

when wired together, it reads the voltage of the back batt. and running 0ga all around

 

[jco1385 5,000+ posts]

why is the back battery @ 10v?

 

[romans535 10+ year member]

are the 2 batts the same. I have an isolator from one batt to the other and so far so good. its been over a year now

 

[iamamp3pimp 5,000+ posts]

he said it was a 12 v

can yhou get a pic of the ground in the back for the battery?

 

[jco1385 5,000+ posts]

i'm officially lost in teh sauce...

one more time...

where is loop? i know he can untangle this mess!! lawlz

 

[soloXgt 10+ year member]

i'm officially lost in teh sauce...
one more time...

where is loop? i know he can untangle this mess!! lawlz

when i just get the voltage of the front battery, it reads fine (12.5ish volts). The back battery lasts about 5 days of daily driving then goes dead. When I measure the back battery WHILE STILL CONNECTED TO THE FRONT, it reads

 

[thorshammer1 10+ year member]

Front batt is always gonna read 12v+ or should. Turn the car over and check voltage. Front and back. Is voltage reaching the back? Is back batt connected to front batt? Is it grounded well?

 

[soloXgt 10+ year member]

if voltage isn't reaching the back, how to fix?

 

[thorshammer1 10+ year member]

Hook it up properly. LOL Wheres it grounded?

 

[peas247 10+ year member]

Hook it up properly. LOL Wheres it grounded?

x2

 

[thorshammer1 10+ year member]

Did you answer or check for the fuse being blown?

 

[soloXgt 10+ year member]

i'll have to check everything again tomorrow. I will swap out the fuse and bet I gots a shitty ground.... If nothing changes, i'll let u guys know. Thanks

 

[kodak314 10+ year member]

fixed the problem!!! my ground for the back battery was loose.

 

[audiolife 5,000+ posts]

Front batt is always gonna read 12v+ or should. Turn the car over and check voltage. Front and back. Is voltage reaching the back? Is back batt connected to front batt? Is it grounded well?

I was going to say a lot of bad battery installs are from a bad ground. If its a unibody car that "sub frame" might not be what its all cracked up to be.

 

[loopkiller 10+ year member]

It is the fuse or a bad connection. If you have checked both of those out completely, the battery is dead and needs replaced.

i'm officially lost in teh sauce...
one more time...

where is loop? i know he can untangle this mess!! lawlz

LOL! //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

I already posted above the answer that should have ended the thread. It had to be one of the following: //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

1) Bad connection somewhere

2) Blown fuse

3) Bad battery

There are no other issues that I can think of. It has to be one of these 3 things. If you are going to assume that you have one of these covered without actually checking it, then I am not going to be able to help. You cannot assume that any of these are not the reason. You must test to see if they are the problem. If you don't want to check each of these, good luck, you are on your own.