Battery - Not a tight fit?

[iKennett]

Hi All...

Just noticed that if I tap the underneath of my Alu MacBook the battery is ever so slightly lose and goes tap tap.

Try this for me.... tap each of the feet of the macbook and tell me if you can hear a tap tap... as if it is slightly lose! (only happens with one)

 

[Darkroom]

it's a known problem: https://forums.macrumors.com/threads/584475/