/diy/ - Do It Yourself

>tried repairing a milwaukee M12 battery
>cut old dead cells out of it
>have to replace the plastic bracket that holds the cells in place next to the pcb
>3d print one after trial and error
>buy three 18650s with pre-spot-welded tabs
>start soldering the cells together
>manage to get them connected to one another around the plastic bracket
>cut the remaining tabs so they'll fit up the holes in the pcb
>cut a piece of silicone amalgamating tape into an insulating barrier with slots for the pads
>spend 10 minutes fumbling with the flimsy pieces of nickel to get them through the slots in the board
>finally get it up there
>solder one tab
>solder the tab on the bottom of the battery
>try to solder the third tab
>soldering iron shorts between the tab and the pad it's meant to connect to
>tab glows orange
>sparks
>melts off
>would have to disassemble the thing entirely to try soldering again
think i'll call it quits on this project, i guess the pcb was the cause of the cells dying all along. that or my desoldering cooked something.