In the Assistant: "One or more cells are damaged. Further use not recommended." Phantom: Blinks red (even when the battery was fully loaded). Pressing the button on the battery once: OK status on the battery Holding the button on the battery: All four LEDs lights up (over 90% life left). I have read that a few other have had this message but no good answers. What is it that really is damaged? And how do the Phantom realize this (fast blinking red LEDs). The cells are balanced at the same voltage. Discharged 27 times only. 91% of life left. Why is there a message that one or more cells are damaged?