byronlj wrote:
Take the lug off, clean it, and solder it back on using flux.
Sounds easy.. But do you have any idea how big a soldering iron you need to handle Battery cable (4ga or bigger) wire.
A welding torch would be my first choice.. Though I might do it with a good propane torch.
The crimping tool someone up-thread suggested.. From the photos it looks like it does a very professional job. Some of those hand tools I use (on smaller wires) the crimp looks to my practiced eye to be better than some factory crimps.
That is one of 'em.