From: charlie@xxx.net   
      
   On Wed, 8 May 2019 16:47:14 -0700 (PDT), AK    
   wrote as underneath :   
      
   >I was thinking of replacing the 18650s in my Dewalt battery when they go bad.   
   >   
   >When using tab wire, what temp do I set my iron for?   
   >   
   >I read that you should go hot and fast to avoid ruining the battery.   
   >   
   >Andy   
      
   The trick I use is to grind the plated surface 2mm-3mm patch (diamond   
   dremel etc) and wet that with flux solder very fast (about 1s @ 350C).   
   put the cell aside for a few mins till stone cold again. Then go back   
   and fast solder the wire. You run into major problems with rech. button   
   cells they seem to be made of some very high chrome alloy which is   
   difficult to get anywhere with (except spot welding!). C+   
      
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