More battery woes
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 226
Likes: 0
More battery woes
Truck no start when heading out to work yesterday morning. Last night when I got home I did some trouble shooting (even bought a Haynes). 1st read voltage off batteries 12.3. Then isolated the batteries 12.4 on drivers side and 11.7 Passenger side.
Pulled passenger side and charged it last night, 2A charge. This morning it was fully charged. Today the Drivers side is charging on 2A charge. Had to top them both off with about 12 oz of water in each. Batteries came from Walmart dated March last year.
Checked fuses and all were good for charging system. However I stumbled on the two 7.5A fuses blown for trailer lights. Something else to check into.
Still no clue as to why the batteries went dead except my wife drove the truck Saturday and it sat all day Sunday. She don't "think" she left the door ajar.
Pulled passenger side and charged it last night, 2A charge. This morning it was fully charged. Today the Drivers side is charging on 2A charge. Had to top them both off with about 12 oz of water in each. Batteries came from Walmart dated March last year.
Checked fuses and all were good for charging system. However I stumbled on the two 7.5A fuses blown for trailer lights. Something else to check into.
Still no clue as to why the batteries went dead except my wife drove the truck Saturday and it sat all day Sunday. She don't "think" she left the door ajar.
Hotshot
Joined: Feb 2007
Posts: 10,499
Likes: 10
From: Sterling Heights,Mi
When you charge your batteries, leave them connected, and charge at 2 amps. If you can find more batteries, hook them in series and charge all of them at 2 amps. YOu could possibly save the batteries by doing this.
While waitng for the batteries to charge, pull your alternator and have it tested.
Good Luck!!
While waitng for the batteries to charge, pull your alternator and have it tested.
Good Luck!!
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 226
Likes: 0
If I charge the 12V batteries in Series wouldn't I need to charge at 24V ???
I an electrical engineer but I do sit next to one. He kinda keeps me from killing my self.
We are both sort of like hmmm how are these batteries wired.
He was also talking about installing load islolator diodes like used in Boats. This way one battery won't drain or act as a load to the other one.
I an electrical engineer but I do sit next to one. He kinda keeps me from killing my self.
We are both sort of like hmmm how are these batteries wired.
He was also talking about installing load islolator diodes like used in Boats. This way one battery won't drain or act as a load to the other one.
you can't fix stupid!
Joined: Mar 2008
Posts: 1,906
Likes: 2
im with Pat. get your alternator checked. more times then not when it comes times to replace the batts its also time to replace the stock alternator. alot of the guys like the shiny one like BDRUMMONDS has i think its a DB or something or you can find a local starter and alternator shop to have it rebuilt. either way im willing to bet the alternator is the culprit of your failing new batts......
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 226
Likes: 0
Interesting on the Alt theory. But wouldn't the idiot light come on ? (you know for guys like me)..
I have a good local shop that I trust so I will do that as well. They fixed my alt on the 928 and a starter for another car.
I have a good local shop that I trust so I will do that as well. They fixed my alt on the 928 and a starter for another car.
Thread Starter
|
Senior User
Joined: Jul 2009
Posts: 226
Likes: 0
Yea I suppose it's a good thing I only have red neck automotive skillz. I took each of the batteries out and am charging them separately on my work bench.
Sort of glad there is two batteries. Lifting one big battery strong enough for Super duty use would not be fun to lift over the fender.
Sort of glad there is two batteries. Lifting one big battery strong enough for Super duty use would not be fun to lift over the fender.
Trending Topics
Cargo Master
Joined: May 2002
Posts: 2,530
Likes: 7
From: Montana
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Hotshot
Joined: Feb 2007
Posts: 10,499
Likes: 10
From: Sterling Heights,Mi
When you charge your batteries, leave them connected, and charge at 2 amps. If you can find more batteries, hook them in series and charge all of them at 2 amps. YOu could possibly save the batteries by doing this.
While waitng for the batteries to charge, pull your alternator and have it tested.
Good Luck!!
While waitng for the batteries to charge, pull your alternator and have it tested.
Good Luck!!
