2X Cobra microTALK PR 3850 WX Two Way Radio W/ Charger & Charging Base

One of the walkie talkies goes in and out of charge. There is a small piece of foil in the battery compartment that helps the battery connection. Not sure if it’s a fixable issue or if that walkie talkie will just be used for parts. Charging base works great as does one of the walkie talkies.