I haven’t flown my Mavic in months, 12+ months.
I took it out of mothballed to get it ready for a member on here CoC. Three batteries charged as normal but the fourth charged and then stopped with the third LED flashing, code for short circuit.
I tried it in the Mavic but got a battery error so I left it resting overnight. In the morning I was surprised when it showed full LED’s and no error message in the App.
The App flagged a message saying “ Drain Battery to 5% and update”.
The battery has a .05 imbalance with one cell reaching 4.22V while the rest only reach 4.17 which stops the charging.
Has anyone had this happen?