I have bought a battery from a friend for my DJI Mavic 2 Enterprise Advanced thermal. It is almost 1 year old but never used.
When I put it in the charger nothing happens. Is there something wrong with it?
Maybe laid too long?

Pressing the button indicates that the battery is at its lowest level
Something i can do about it??

If the battery is unused then it's in a hybernation mode and shouldn't indicate anything. It only gets activated when you put it on the charger so (because of the blinking indicator LED) your battery seems to be successfully activated already. Leave it in the charger for a couple of hours. If the battery is only one year old AND it has been stored in hybernation mode it should be OK.

Try to connect the charger directly to the battery, not via the charging hub...there is a risk the battery is dead

Plug it in directly to the charger, and leave it there for a couple of hours. If it doesn't start charging by like the 5th hour then the battery is probably dead.

Hi there. Thank you for reaching out. Please try to plug in the battery on the charger for approximately 2-3 hours or more then check if the issue persists. If the issue persists, please provide us with the serial number so we can check if the product is still in the warranty period. We will wait for the update.