Recycled lead

I read an article that expressed some concern about the lead purity from recycled lead. Of particular concern for lead-acid batteries is copper and nickel contaminates.
Battery leakage can increase from lead that is not of high purity.
Battery leakage can increase from lead that is not of high purity.
Comments
I'd suspect it would be hard to create a compound which would be hard to smelt out, between the weight and low melting of lead.
- Assorted other systems, pieces and to many panels in the closet to not do more projects.
http://www.youtube.com/watch?v=oJj5iIwF8p4 try that link,