wrote in :

Larry, where are you when we need you (weak
humor)?


http://www.powerstream.com/spot-welder.htm

This is how the tabs should be put on the cells. The holes are for
soldering AWAY FROM the cells so as not to heat them. They are for wires.

When someone makes a pack with the proper welding machine, there is no
soldering except for the output wires, which is the proper way to make a
pack.