Hi everyone,
I used to fly my drone a lot, but one time I lost my charger and just stopped using the DJI SPARK. After almost one year, I found it. Now the batteries wont charge, the charging hub has a still red light. I left the charging hub connected overnight to see if the red light dissapeared, it didn't. Also I left my spark conected via micro usb. It didnt charge the battery. Can someone help me?

Probably it is dead. DJI manual ask to recharge every 3 month. But you can try and leave it on for 12 h or longer. Just don't hope too much.