Battery not charging

2001 FORD EXPEDITION
180,000 MILES • 5.4L • V8 • 4WD • AUTOMATIC
Avatar
RAYRAY27
  • MEMBER
  • 1 POST
I plugged in a converter one night and now ever since I've had to replace 2 battery's alternator and the battery saver fuse, but battery still isn't charging.
Jan 17, 2022 at 5:03 AM
Avatar
SQM
  • ✓Experienced Mechanic
  • 6,383 POSTS
Hello,

So, what is the alternator output to the battery?
If there is excessive load on the charging system, the alternator will not be able to charge the battery. And that will lead to battery discharge and failure.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Is the converter still plugged in?
What size is the converter?
If that is drawing too much amp it will not allow the alternator to charge the battery.
It is possible that the alternator is just not powerful enough to handle the extra load.

The factory alternator is rated at 115A.

Let me know a little more information.
Thank you.
Images (Click to enlarge)
Attached Media
Attached Media
Jan 17, 2022 at 5:34 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle