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battery ful charge ?NOT !

A

Anonymous-0

Well-known Member
cant figure out what happened , maybe you guys can relate ..had a decent 1 or 2 yr old battery that was left practically dead for nerly 60 days,,l reason Probably why , I am having trouble ?? ,, anyway put it on slow automatic charge for a couple days and fully charged it , put it in the diesel tractor , and cranked it over just fine til it finally started in the cold,,.couple hours later couldnt get nuthin out of the battery,,.battery charger reads full charge ?,, switched charger ,, same reading? nuthin across posts ?? ..I guess it is ready to go to the recycle bin ?
 
I had a bad battery like that.
I put an aspirn in each cell and put it on 2 amp charge for a day or two.
A year later the battery was still good.
That was the first time I ever done that. I have heard it would wyrk but didn't try it till then.
 
An older neighbor adds white vinegar.Says it helps.A motor cycle battery got another seasno,A small tractor battery,didnt help a bit.Who knows.....
 
Have you eliminated the simple and obvious things?
Are all external connections good?
Are terminals clean and cables good?
Does tractor start with a boost?
If your charger is indicating a full charge it would seem there is a connection being lost somewhere internal on battery or external on battery or tractor wiring.
You said it took a charge and started the tractor so I will assume there is adequate fluid in the battery and it is not frozen.
Is it a dual terminal battery ie; top and side post? I have had them loose connection internally to a top post before but still function fine through the side posts and vise versa.
If battery is only 1-2 years old it may still have warranty, take it in and have it load tested if you don't have the equipment to do so yourself.
 
A deep discharge, chronic under charging and in particular sitting dead for any period of time. These conditions will ruin a floaded lead acid cell in short order.
 
Hello J hikemper,

Get the volt meter out, and start at the battery posts. Then the battery cables at the posts. Sounds more like a bad connection then a bad battery,

Guido.
 
I used to have a resistor load tester. A year ago I purchased a battery conductivity tester. I like the new school way of testing the actual condition of a battery. Saves me a lot of time.

I recently worked on a lawn mower with a bad decompression release. With out proper test equipment, you would think you have a bad battery or bad electrical connection. The conductivity tester takes the guess work out of trouble shooting a battery.

Load tester would tell me battery was good, conductivity testor would tell me the actual CCA.

You may have a drain problem and it's not a battery problem. Use an ammeter and check for a drain.

George
 
yep ,should not had left the battery dead on the 730 , sitting up there at pops so long , but it took slow full charge and cranked like a new one ,since I cant get nuthin groundin between posts . I think that the post disconnected from the hot end inside ,,. don't know why,, could be from excessive crankin the diesel motor ,, I cant figure why 2 different battery chargers read full charge ,, when its as dead as a rock ?
 
Battery can have full terminal voltage and appear charger to a "dumb" charger. Yet have failure from high internal impedance.
 
A couple months ago I took 2 stone dead batts(dated 2006) out of truck that had been sitting for 5-6 years in the fence row.(it gets to 40 below here in the winter)
Put them on slow charge for 3 day's,..they both tested good on the carbon pile tester.
I just checked them the other day,..both still read 13.4 volt.
You go figure
 
A couple months ago I took 2 stone dead batts(dated 2006) out of truck that had been sitting for 5-6 years in the fence row.(it gets to 40 below here in the winter)
Put them on slow charge for 3 day's,..they both tested good on the carbon pile tester.
I just checked them the other day,..both still read 13.4 volt.
You go figure


Musta hit the hammer twice :roll:
 
Question, I remember you talking about a conductivity tester a while back. What one did you end up getting. Not that I can afford one now days but curious . I have the old Allen carbon pile load tester that I used at the dealer for many years.
 
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