I found some info on reconditioning batteries on the web .. I wanted a few old deep cycle batteries to try it on, Crossville is a ways away .. shame Im still not doing Dell service work I was in Spenser pretty often .. now I rarely get that way
Reconditioning auto and marine batteries .. removes the built up crap on the plates, which is what causes the battery not to hold full charge .. you remove the buildup, then the battery is good for at least another yr generally .. from what I have read.
I have not yet tried it .. I have 3 auto batteries I can try it on but wanted a couple deep cycles to try too.. here is the one of them I want to try .. there are others http://www.chinadepot.com/batripod.html