i buy my drone fom 2020-08-18 and 1 batterie is dead and dont charge anymore can you help me  i think it is still warenty

Hi Sacha, please try to charge the battery for about 2 hours in the direct charger, if the battery has no reaction, please report the issue to our support via email at http://www.dji.com/support, we will help you to sort out the case.