my watch was completely unloaded and stays in power saver mode when I charge. When I load in power saver mode the red light turns green for a few moments then switch back to red and no longer charge. When I remove the battery and put it back on the charger the charge starts again for a while and then stops. Do I need to change the battery? (apple watch serie 4 nike)

my watch was completely unloaded and stays in power saver mode when I charge. When I load in power saver mode the red light turns green for a few moments then switch back to red and no longer charge. When I remove the battery and put it back on the charger the charge starts again for a while and then stops. Do I need to change the battery? (apple watch serie 4 nike)