Hello Joseph,
Visit a battery shop, that does do repair, and see how it is done. Most of
these batteries are separate cells or call jars batteries, where the tops
and grids can slide right out of the jar. A lot of the industrial standby,
float and fork lift batteries and industrial electric vehicle batteries are
done this way.
The only simple repair that can be done by a person on a 6,8 or 12 volt
battery is to install a new post on the battery that has been melted off,
broken or been squeeze down to much for the battery clamp to tighten.
Smooth off the top of the post down to it base and drill a 1/4 inch hole for
a 5/16-18 tap and just screw in a repair post that you can get at a auto
parts store.
Another method, is if you happen to have a shop with all the equipment, is
narrow down the damage post with a 5/8 inch diameter plug cutter, the type
that is use for making wood plugs.
Place a taper steel post mold, that you can either purchase or make with a
lathe or large drill press using a taper cutter.
Place the battery on a steel top table and use a magnetic stand that clamps
down on the table and pushes the taper steel post mold down on tight on the
battery post base, so the molded lead you applied will not leak out. I will
also place layers of wet paper towels around the post I am working on.
You should have at least a 1500 CFM fan in the ceiling with a drop down
hose, that is place against the work you are doing.
Using a mini torch with a very long hot thin flame, you start to melt the
post lead starting at the bottom of the post, and at the same time apply
100% lead that you can get in rolls like solder comes in. You can get this
100% lead rolls from a fishing and tackle store, which are for making line
weights or you can get lead sticks from a battery repair shop.
As the lead post melts keep rotating the flame around the post adding
more lead and then you finish with a smooth bottom on top.
Now that you are done with that one, there is about 100 or more to go.
Roland
----- Original Message -----
From: "Joseph T. " <[email protected]>
To: <[email protected]>
Sent: Friday, August 17, 2007 10:55 PM
Subject: [EVDL] Battery MD? Repair/Remanufacture Batteries?
> I came across Battery Md, who apparently has done service for GM, Ford
> , and Chrysler regarding battery packs in their (now almost all
> crushed) EVs.
>
> They also say that they can remanufacture/repair batteries. How is
> this possible? How can you "repair" a battery?
>
> Their slogan is "There is no such thing as a bad battery...they are
> just misunderstood." Is this slogan accurate by any means?
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
Visit a battery shop, that does do repair, and see how it is done. Most of
these batteries are separate cells or call jars batteries, where the tops
and grids can slide right out of the jar. A lot of the industrial standby,
float and fork lift batteries and industrial electric vehicle batteries are
done this way.
The only simple repair that can be done by a person on a 6,8 or 12 volt
battery is to install a new post on the battery that has been melted off,
broken or been squeeze down to much for the battery clamp to tighten.
Smooth off the top of the post down to it base and drill a 1/4 inch hole for
a 5/16-18 tap and just screw in a repair post that you can get at a auto
parts store.
Another method, is if you happen to have a shop with all the equipment, is
narrow down the damage post with a 5/8 inch diameter plug cutter, the type
that is use for making wood plugs.
Place a taper steel post mold, that you can either purchase or make with a
lathe or large drill press using a taper cutter.
Place the battery on a steel top table and use a magnetic stand that clamps
down on the table and pushes the taper steel post mold down on tight on the
battery post base, so the molded lead you applied will not leak out. I will
also place layers of wet paper towels around the post I am working on.
You should have at least a 1500 CFM fan in the ceiling with a drop down
hose, that is place against the work you are doing.
Using a mini torch with a very long hot thin flame, you start to melt the
post lead starting at the bottom of the post, and at the same time apply
100% lead that you can get in rolls like solder comes in. You can get this
100% lead rolls from a fishing and tackle store, which are for making line
weights or you can get lead sticks from a battery repair shop.
As the lead post melts keep rotating the flame around the post adding
more lead and then you finish with a smooth bottom on top.
Now that you are done with that one, there is about 100 or more to go.
Roland
----- Original Message -----
From: "Joseph T. " <[email protected]>
To: <[email protected]>
Sent: Friday, August 17, 2007 10:55 PM
Subject: [EVDL] Battery MD? Repair/Remanufacture Batteries?
> I came across Battery Md, who apparently has done service for GM, Ford
> , and Chrysler regarding battery packs in their (now almost all
> crushed) EVs.
>
> They also say that they can remanufacture/repair batteries. How is
> this possible? How can you "repair" a battery?
>
> Their slogan is "There is no such thing as a bad battery...they are
> just misunderstood." Is this slogan accurate by any means?
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
