The batteries that I want to rebuild are the dry cell batts for power tools. I have found several mail in companies that provide the service. Has any one used one or know personally of one that is a good value.?

I totally get CRENWELGE' idea of making sure they the battery fails within the warranty period. I used to buy Diehard work boots that were warrantied not to wear out for a year. Every year I had to drive around & drag my feet off the Yamaha to get the sole worn thru. Those were great boots.

Blue 666

A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.