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Rectifying flat batteries

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Tnate Seriously Crusin Dubber

109 posts · joined Aug 2002 ·

#374046
Is there any way of bringing old batteries back to life?

I mean one that has no cracked plates, rather has just been sitting flat for a while. One that does not hold charge, and only gasses when a current is put through it.

This question has always plagued me, and I would love to find out if it is possible.

Cheers
Tnate

toplessbug Fahrvergnugen

879 posts · joined Aug 2002 ·

#374053
apply current(cy)
a new one fixes sulphation--------

General_Failure Use your head, don't abuse it!

1,036 posts · joined Jun 2004 ·

#374075
Once a battery is stuffed, there's no turning back. Application of a sufficient amount of currency is the only way to fix it. It makes the battery like new!

Even if you can get it to hold enough charge to crank the car, try it a little later. It'll be dead again.

I'll be pursuing this method in the near future.
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.

MickH Hairy Gutted Sloth

3,389 posts · joined Sep 2003 ·

#374082
Tip the acid into a plastic container. Go to your neighbours house and use their garden hose to hose out the battery to remove most of the buildup from the plates. Put the acid back in and charge the battery fully.Presto. Make sure you use your neighbours hose as it will kill the grass. And yes it does work.
tssnq.com.au

General_Failure Use your head, don't abuse it!

1,036 posts · joined Jun 2004 ·

#374200
Wow. really? I'm genuinely surprised.
The last place I lived had sulphuric acid in the general store. Don't suppose it's sold like that here, is it?
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.

lugnuts Custom Title Time!

1,070 posts · joined Aug 2002 ·

#374205
Motorcycle shops sell battery acid because bike batteries are sold dry.😉

General_Failure Use your head, don't abuse it!

1,036 posts · joined Jun 2004 ·

#374214
So, how much of an old battery's life can be reclaimed? I just need mine to hold enough charge to crank properly....and hold a charge. Probably easier to get another one. My batteries are pretty old now.
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.

MickH Hairy Gutted Sloth

3,389 posts · joined Sep 2003 ·

#374216
General_Failure wrote:Wow. really? I'm genuinely surprised.
The last place I lived had sulphuric acid in the general store. Don't suppose it's sold like that here, is it?

It will get you out of trouble most times unless the cells are dead/broken etc. For the price of a new battery these days it is just as easy to get a new one and add the stuff Hellbus mentioned.
tssnq.com.au