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?