|
Would require a very powerful soldering iron as you want to heat it as quickly as possible and complete the solder joint. I get the impression that cheap spot welders ($40) are junk as has been my experience so far.
Aftermarket batteries are pretty cheap though. I bet something like that would be $20 shipped.
I once attempted to replace what I identified as weak NiMh cells in a Roomba pack, and it was a failure. Not sure if it was the replacements I got, or I didn't identify all the bad cells, or what. Probably all of the cells should have been replaced. People started making Li-ion packs that worked much better, so I just switched to that. The garbage OEM NiMh packs would not quite last a year before dying, but the li-ion pack I bought has been going over a decade now.
|