Alternator Output Question -
LinkBack Thread Tools
post #1 of 2 Old 03-06-2014, 10:22 AM Thread Starter
Registered User
1994 ZJ 
Join Date: Sep 2007
Location: Bloomington
Posts: 193
Alternator Output Question

So about two weeks ago, my battery died. It was a solid 3 years old, about 6 months outside of the warranty, and didn't have enough amperage to crack over a Cheerio.

Cheap Farm & Fleet battery got replaced with a yellow top Optima, its awesome, I should have gone with an Optima years ago.

However the alternator is putting out 14.8 volts now (it did not seem high when I had the old battery, but I drive the jeep like once or twice a month). Based on the temperature, the FSM says 13.7-15 volts is acceptable. I personally, still think this is to high, I've always been under the impression anything above 14.4 is too high.

Is this true, or am I worrying about .4 volts for nothing?

chetzar is offline  
Sponsored Links
post #2 of 2 Old 03-06-2014, 04:18 PM
Registered User
1995 ZJ 
Join Date: Feb 2012
Location: St Pete
Posts: 2,192
be careful with the optima batteries, they are very picky about how they are charged. It's still within safe voltages but food for thought.

1995 ZJ ltd, 4.0 i6, *cough stock cough* 253,xxx and still pumping strong
1998 Chevy Cheyenne K1500, 5.7L Vortec, mostly stock
*In peace, sons bury their fathers. In war, fathers bury their sons. - Herodotus
Originally Posted by JasonStebbins
We can call it the Whoosh King Catalog System. :D
Gearhead31 is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome