Hello

My battery is not working.
No green light, no charge indicator, no possibilty to charge...

Any solution for that ?

Ya, it sounds like your battery is dead, theirs not much you can do with it..

If you purchased the battery  less than 6 month then you can recover from DJI ,
if not
try to  keep it on charger at least 2 hours even not giving any sign of charging ,
check if the battery shows any bulging or deformation on top or base surface  
if nothing gives positive outcome then probably you have defected battery

I use the battery to 25%, take it of the drone put it in my bag, then go back home and when I plan to charge it, no more power indicator.
I'll try to charge a long time...

If you purchased the battery  less than 6 month then you can recover from DJI. However try by charging it continuously for a day.

Hi. I am sorry for the trouble. With regards to the battery. Was the battery stored for a long time? Please try to charge the battery with the provided charger for your DJI Mavic 2 Pro for about 2 hours to isolate the issue. In addition, I will be posting a link ( https://dl.djicdn.com/downloads/Mavic_2/20180823/Mavic_2_Intelligent_Flight_Battery_Safety_Guidelines_EN.pdf ) for the DJI Intelligent Battery safety guidelines. Please keep us posted for further assistance. Thank you.