What does the red flashing LED mean after I switch on my ConnectedRide Com U1?

The red flashing LED shows you the charging status of your ConnectedRide Com U1.
The LED lights up blue once long, then short, then

• 4 times red when the battery is fully charged, 
• 3 times red when it is half full and 
• 2 times red when it is almost empty, 

and then blue again short. 

See also the following figure: