green blinking

Good morning all. Here is my concern a problem of overvoltage of my battery see video, charged in a hotel last weekend. Charged with the multiple charger see photo. The battery at the same time was charged c is towards the end that LED3 c is blinking twice per second. I specify that the battery...

My controller is blinking green (I think), could be yellow but I'm colorblind. Not red for sure. Beeps constantly about 2 cycles per second along with the blinking controller light next to the 4 batt indicator buttons. I don't see anything like this in the LED Key for the controller from dji...