Faulty battery terminal fix ideas

[awemawson]

Any screw sadly will corrode in the sulphuric acid after a while

 

[123hotchef]

Any screw sadly will corrode in the sulphuric acid after a while

maybe not its a gel mat battery

 

[awemawson]

But the gel is still sulphuric acid based I believe

 

[dannyp]

dremmel round the terminal and excavate it out find whats it detached from then give it a good dose of looking at befoe proceeding

 

[mcostello]

1. Went into a place that used to rebuild batteries years ago. They just slapped a mold around the terminals and briefly hit it with a cutting torch, seemed to work.
2. A Boss thought His battery clamp was loose, He twisted it a bit and seen the whole terminal was moving, then boom the battery blew up and covered Him with battery acid. He had glasses on over His safety squints and at least His eyes were ok.

 

[zzr1200]

cut it open and crimp or solder perhaps

I'd like to see you solder an AGM plate link, the battery is scrap......

Very few batteries these days are not based on a form of AGM.

AGM.....Amalgmated Glass Matt....I believe.

The answer should be somewhere in the link above....

 

[Matrixx]

you could get a cheap one off eBay or Facebook for virtually nothing? , not worth repairing.

 

[123hotchef]

still gotta be worth a look to cure my curiosity

 

[zzr1200]

still gotta be worth a look to cure my curiosity

If your going to cut it open try totally flattening it with a 12 volt bulb across the terminals for week, a short a cross any cell/plates could result in an explosion blowing the top of the battery.

Personally not worth the risk to face or possible loss of sight imo, but that's up to you...

Just scrap it.

 

[normspanners]

drill down the terminal with an 8mm drill untill you get a good reading, in a copper 28mm end stop melt some solder ready, a little flux down the hole , warm the terminal with hot air gun as hot as poss, stick a soldering iron down the hole and remove then pour pour the melted solder down the hole, I have repaired many termials by making an aluminium former and reforming them by doing exactly that. especially commercial batteries when the terminal has become loose and blasted the lug away at startup.

 

[123hotchef]

drill down the terminal with an 8mm drill untill you get a good reading, in a copper 28mm end stop melt some solder ready, a little flux down the hole , warm the terminal with hot air gun as hot as poss, stick a soldering iron down the hole and remove then pour pour the melted solder down the hole, I have repaired many termials by making an aluminium former and reforming them by doing exactly that. especially commercial batteries when the terminal has become loose and blasted the lug away at startup.

thats an interesting approach the terminal is in perfect condition just not making proper contact with why lays below

 

[blackolive (Ste)]

I nipped to the local auto electrician and asked if they had any batteries that would hold a charge for an electric fence ( they only take less than 100mA )

he got the load tester on a few and came up with a good one , cost a fiver.

Ive also got one of those solar trickle chargers on it so it doesnt need pulling out of the field to recharge. In winter when the neddies are in Ill stick it in the hay cabin to power the 12V ed lighting Ive stuck up in there.

I wouldnt be confident putting a "repaired" battery on the fence. if the elctric went off there would be Havoc as our oldie is in a separate paddock off the Pony field, and she has hay in there, the ponies woud be in in a flash

 

[normspanners]

thats an interesting approach the terminal is in perfect condition just not making proper contact with why lays below

exactly so it has disconnected under the terminal so you need to reconnect it you could go to 10mm drill if the terminal is ok.
when they make traction batteries this is how they do it

or this https://www.youtube.com/watch?v=aWD3wOKZvgU

 

[123hotchef]

exactly so it has disconnected under the terminal so you need to reconnect it you could go to 10mm drill if the terminal is ok.
when they make traction batteries this is how they do it

or this https://www.youtube.com/watch?v=aWD3wOKZvgU

ok so drill through the terminal with a 10mm drill bit until i hit the copper plates underneath, the plates are on there ends too from what I can see rather than piled up

 

[normspanners]

dont think you will hit copper it will just be lead I think, obviously keep the battery tilted so the water /acid is not cooling it when trying to heat it .

 

[123hotchef]

dont think you will hit copper it will just be lead I think, obviously keep the battery tilted so the water /acid is not cooling it when trying to heat it .

this is a gel battery so thats not possible!

 

[awemawson]

No copper at all in these types of battery. Usually just lead with a small amount of antimony added to make it harder.

 

[123hotchef]

ok drilled the hole through the terminal have not screwed or soldered yet the battery has been charging as is up to 7V

 

[123hotchef]

So solder or self tappet

 

[123hotchef]