Same issue . Today i charged up one of my mavic batterys and got a error message when i installed it in the mavic i don't remember what the message said . when the battery was fully charged i noticed the 2nd from the top led on the battery would flash 2x pause and continue on like this till i pressed the button on the battery. I looked ate the battery page on the go app and saw one cell was not fully charged . I hovered the mavic till the battery was at 50% and recharged it and same thing ( 2 flashes and pause 2 flashes and pause till i pressed the button ) I then hovered till the battery was at 10% and recharged it and same thing 1 cell not fully charged . Any suggestions ? Whats the warranty on the batterys ? this 1 only has 9 charges got it in january.