Battery cables
It's a Van Gogh
Joined: Feb 2010
Posts: 7,813
Likes: 1,335
From: Elk Grove, CA
Tonight I went out to my 01 F250 PSD, and I noticed my USB charger with temperature and voltage display showed 9.4 volts.
Well I had not run truck since Friday 1/14/22. I also noticed that my fake alarm flashing red light was not on. The little red light I buy has a limited life span guessing 50,000 hours.
So I assumed parasitic draw and possibly faulty red light.
I opened the hood and noticed passenger side battery, positive terminal was heavily corroded. I pulled off the vent caps and noticed the corrosion from positive terminal had seeped into the closest plate. I had never seen that before in my 46 years of working on my own vehicles.
The reason I am including this info in this post is because I bought and used some battery cleaner, and battery terminal protection spray. I think I bought it at Harbor Freight with a new battery post cleaner.
So I am thinking this protectant spray sealed up around the terminal where normally corrosive gases may slightly seep out?
Well I had not run truck since Friday 1/14/22. I also noticed that my fake alarm flashing red light was not on. The little red light I buy has a limited life span guessing 50,000 hours.
So I assumed parasitic draw and possibly faulty red light.
I opened the hood and noticed passenger side battery, positive terminal was heavily corroded. I pulled off the vent caps and noticed the corrosion from positive terminal had seeped into the closest plate. I had never seen that before in my 46 years of working on my own vehicles.
The reason I am including this info in this post is because I bought and used some battery cleaner, and battery terminal protection spray. I think I bought it at Harbor Freight with a new battery post cleaner.
So I am thinking this protectant spray sealed up around the terminal where normally corrosive gases may slightly seep out?
I recently had the same heavy blue Koolaid corrosion on the PS + terminal. A couple times I cleaned the terminal and figured I was done. But after third episode I noticed the plastic battery top let go of the post. The cell outgassed thru the crack and corroded the heck out of the connection. Cleaned it twice before I realized there was something weird going on. I gooped up the void around the battery post with some sort of glue (I forget atm) and all is well 5 months later. 6 yo Wally world batteries. Inspect the terminals of your battery closely and fix them if needed.
And stick your voltmeter on there and check voltage. Suggest at + and - posts of each battery, should be very close. Then pull off all terminals and check the posts (just the batteries now) again. Should still be close.
Refill battery cells with distilled water only.
If you are feeling really into diagnostic mode swap the batteries PS to DS and see if issue follows.
Thread
Thread Starter
Forum
Replies
Last Post
Rusty_S
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
10
Sep 7, 2019 09:49 AM
