Quote: (Originally Posted by
SkinAndScuba)

You should not be soldering batteries. If you need to make a battery pack you should be spot welding them together.
Batteries get damaged when you heat them with a soldering iron.
I've soldered lots of both lithuim and alkaline without any problems. Hot and fast is the best way. I tin the battery, then the wire then quickly join the 2.
Always seems to work for me.