The Crazy Swede
New Member
Regarding th wrence on the battery terminal thing...let's say, if the melting point of the wrench (probably chromoly) is 3 times the melting point of lead, and the contact area of each battery terminal to wrench is 4 times that of the circular dimention of the wrench handle, the wrench will melt if the battery has the availability to deliver enough current to raise the chromoly above it's melting temperature.