Not realizing batteries need to be charged every 3 months or so, my Mavic Air (first one) was stored for over a year, out of 4 batteries 2 are now dead. Not sure why the other 2 charged up fine after prolonged period, but is there any way of salvaging the 2 dead ones? No lights come up on the batteries and when inserted into the charger, green light is followed by red and batteries don't get charged. To be honest, extremely dissapointed by DJI themselves for not supporting Mavic Air anymore and putting old customers in an awkward position as not all can afford just to throw a drone to buy a newer one!! Can't even find new batteries at a reasonable price, I'm based in UK.
Any advice will be highly appreciated.

Hello there Askari Drone. I am sorry to read an to know about the intelligent flight batteries of your DJI Mavic Air and thank you for reaching out. It seem that the said DJI batteries are already depleted. Just a reminder to please do not store the said DJI batteries  for an extended period. Doing so may over discharge the batter and could cause irreparable battery cell damage. For reference I will post a link where in you can check some tips on DJI Mavic Air Intelligent Flight Battery Safety Guidelines ( https://dl.djicdn.com/downloads/ ... idelines%20v1.0.pdf ). Thank you.

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