Help Finding Resistor and Capacitor Values on Logic Board

Hi folks

I have a little big problem. Yesterday I changed the battery of my Macbook Pro Mid 2012 13” i5 2.5Ghz (no retina). Unfortunately a small part broke off (see appendix). Do you know the name of this part? It is located above the battery connection.

Fortunately I didn't lose this part. How can I check it for function?

Strangely enough, the Macbook runs without problems. So I can't say what the part is for.

I look forward to your help.

Best regards.