You probably can remove the adhesive Teflon-gliding-strip to reveal screw holes. Then replace the lipo pack.

I recently replaced a broken left click Omron D2F-01F micro switch in my Logitech MX vertical (open mouse, desolder 3 Pins, resolder new part, put all together again). The lipo pack is tiny and quite accessible inside.

It is doable but a bit of a nuisance. Took me about one hour (opening, ordering, change part, put all together again). Working again, even better than before due to the upgraded premium switch