Geno; Probably a translation problem. When you said lead from Acid Batteries I took it you were speaking of the actual battery plates. I am aware of no problems with the cables, sheathing, wires etc used for connecting batteries. Older bateries themselves had in the past been broken down & the plates melted down for lead. This practise is no longer advisable because of the changed composition.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra