There's a tab that connects the 2 cells, looks as if it is spot welded? How do you rejoin those? Not about the money of the pack, about the cost of the pack AND the hassle of getting rid of them to me. Hate land filling good cells.Yes of course. A cell is just a cell. You can solder them in parallel or in series. As many as you want however you want. Then just tape them up and you have a battery pack.
There’s fire and injury risk working with batteries like that though. Considering the price of a 2S battery, I personally wouldn’t mess with it.