Rebuilding post on battery

steve-in-ga · Jul 21, 2018

Got a nearly new battery with a post nearly burned off. I hate to throw it out. I watched a video of using a torch to rebiuld the post by using a form and melting the lead and reforming the post.

Was wondering if anyone here has used this method and how dangerous it is with a flame near a battery.

buickanddeere · Jul 21, 2018

Have seen them drilled and tapped

pete black · Jul 21, 2018

Second that, especially on a lawn mower battery.

DJ930 · Jul 21, 2018

I have done it on big fork trk batteries. Take all caps off and blow air (low pressure) to get gases out of each cell. take a pipe or something the right size of post for a form, then low heat and build it up. If it gets too hot it will blow out and run and you have lost the post, but you have too have it hot enough too mold together. Be careful and you will get along fine.

jeffcat · Jul 21, 2018

No tourch guy. The metals from the remains has to be super surgical clean. Barkeepers friend is very good. Make a form around the post of a high temp material. Place plenty of wet cotton fabric around it. Make a very very good guess as to how much melted lead you will need. Cross you fingers and pour. Gently pour water on the cloth so you don't melt the battery. Here is a video of another way. Pick your poison.
terminal

Traditional Farmer · Jul 21, 2018

Drill and tap it and to put in a screw in post.

Stephen Newell · Jul 21, 2018

The case on a battery is plastic. I don't believe you can cast to the battery without damaging the plastic case. I think I would be inclined to cut the post off flat and drill and tap it. Then use a side mount terminal end on the cable.

FBH44 · Jul 21, 2018

I had a hydrogen buildup in my battery in my old '767 chevy, and when I hit the starter she blew, exploded, sprayed acid all over, rocked the truck left and right like a 12 gage. Thought I'd been shot, seriously. I would NEVER get an open flame anywhere near a battery. Period.

Moonlite37 · Jul 21, 2018

On the first car I had (50 Ford) I broke off a post. Fellows at work told me to use a piece of a shot gun case Ga? Paper all they had back then, and pour melted lead in. One fellow told me of an old man who would fix it for me. He had a couple tapered molds and he poured me a new post and charged me $.50. This old man had a shop in an old dark limestone building with a wood floor. He had a big pile of odd wrenches on the bench and none of the tools had a bright finish, just worn bright from use. He had been a model T mechanic

DoubleO7 · Jul 21, 2018

I would cut the damaged post off flat, no more than necessary.
Then drill and tap maybe 1/2" deep and install some threaded brass rod that matches these screw on battery posts with threaded hole from the bottom.
Or drill and tap for the GM side mount battery cables if you do not hate them with a passion.

https://www.batterymart.com/p-post-...MIzMPNwq2x3AIVirXACh3TPA1MEAQYDCABEgL2m_D_BwE

westga · Jul 21, 2018

Find an old dead battery to practice on.

David G · Jul 21, 2018

Why do I think bringing a flame near a battery is a bad idea?

Dugger · Jul 22, 2018

(reply to post at 20:24:54 07/21/18)

Flames and battery just don’t mix
It’s obvious they haven’t seen one explode

Determined · Jul 22, 2018

(quoted from post at 15:54:11 07/21/18) Got a nearly new battery with a post nearly burned off. I hate to throw it out. I watched a video of using a torch to rebiuld the post by using a form and melting the lead and reforming the post.

Was wondering if anyone here has used this method and how dangerous it is with a flame near a battery.

Another option if you have an application for it similar to mine.

I picked up a battery with a badly damaged post for next to nothing, I have several installations of electric fencers with solar panels to keep them charged.

Used a stainless steel hose clamp to connect a wire to what was left of the post, being a low amp draw it has been working fine going on 4 years now.

Case Nutty 1660 · Jul 22, 2018

at the shop I worked at for many years we had a fleet of semis to maintain,, we would burn a post on them once in a great while, we had a urn we melted down old lead wheel weights in and would set the post over the burned one (of course all was Clean) and then would pour liquid lead into the female post and use it for a form,, worked every time, like said NEVER use a flame by a battery BIG BOOM when they blow up
cnt

Brian G. NY · Jul 22, 2018

(quoted from post at 01:07:51 07/22/18) I would cut the damaged post off flat, no more than necessary.
Then drill and tap maybe 1/2" deep and install some threaded brass rod that matches these screw on battery posts with threaded hole from the bottom.

This seems like a great solution....never saw them before!

Rebuilding post on battery

steve-in-ga

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buickanddeere

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pete black

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DJ930

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jeffcat

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Traditional Farmer

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Stephen Newell

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FBH44

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Moonlite37

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DoubleO7

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westga

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David G

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Dugger

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Determined

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Case Nutty 1660

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Brian G. NY

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