Phantom 4 battery light flashing meanings

[Jay2112]

I bought a few p4 batteries privately.. One of them does not work...if looking at it as if it were in the phantom...the far left light or the light 4 spaces from the button just blinks...steady blink..blink..blink..shuts off..If the button is held all 4 bars light up, as if full, for a moment then all shut off.. What is meaning of blinking light? Can it be fixed?

 

[mendez]

It means the battery is too hot to charge. Make sure you let it cool well after flight and before charging.

 

[Dronefriend]

If it is LED1 it means the battery is dead.