Help Needed not charging, need help

[03superduty]

Ok so battery light came on, checked the voltage was down to 12.69 running, swapped out the alternator voltage jumped to 13.5, a week later its down to 11.4 and my dash cut out, the windows dont work, fan only blows on low and the battery, abs, and air bag lights are on. bad alternator? bad battery?

 

[ckamp52]

my guess would be battery>>>go t o'reillys or autozone theyll test em for free

 

[4x4grey88]

Ok so battery light came on, checked the voltage was down to 12.69 running, swapped out the alternator voltage jumped to 13.5, a week later its down to 11.4 and my dash cut out, the windows don't work, fan only blows on low and the battery, abs, and air bag lights are on. bad alternator? bad battery?

I had to replace my batteries to fix the same issue.

 

[BIG JOE]

my guess would be battery>>>go t o'reillys or autozone theyll test em for free

A Heads-up/Reminder ??

Whenever & Wherever you get them checked (Load Tested), be sure and have them Completely dis-connected from each other.. AND... from the truck.

If one is weak or bad ? Buy TWO. (An Old(er) one will pull a New one down.. and yul be back to Square One... very shortly.)

Joe