Valence U27-12XP red LED flashes every five seconds.
While driving I monitored the Rover and the battery voltage rose to 13v in about 45 minutes of 180watt charging from the Rover. When I got home the battery was still blinking red with 13 volts and I started googling. I can''t find ANYTHING about the red LED accept for a different blink pattern, not once every five seconds.