[JThiessen]

Originally Posted by lincpimp

The tabs are resistance welded on, the only ways I have found to seperate these is to slowly wiggle the cell back and forth and the tab will eventually come off. You can solder to the cells, but you have to be careful. I usually leave the tab on the cell, and just cut it off in the middle where it bridges to another cell and put the solder on the tab...

So have you had any that have come loose? There appears to be four spots where its welded. I had one of them pop loose on what appears to be one of those, possible two.

When you made your packs, were they 2S2P config? I'm asking because the center tab connected all four batteries together. It's now cut in half. I'm uncertain how to approach soldering that back together. I'm not certain what to use to solder the other end either...should/can I just use a normal battery bar? I've seen a thread about someone using desoldering braid for this purpose.