Hi, I am facing a weird problem with the battery. After flying 2 batteries without issues yesterday, I recharged both as usual. Today one of the batteries won't start the craft and won't turn on by itself. With a short press, all 4 leds light up indicating full charge. with short + hold (normal turning on sequence) the 4 leds light up sequentially as usual, but immediately they blink and the button and the furthermost led turn on for 2 seconds and turn off. nothing that i have tried changes this behaviour, the craft does not turn on and the battery does not respond to connexion with the charger. Trying to cheat the battery by connecting it while pressing the buttons with the leds on does not work either. This is a rather new battery with approx 10 charges and 100% health, no issues and with latest firm. Is there anything to do before sending it to dji?