I have a 2009 F650GS (twin) that I bought used. Total mileage is now 12,500. Lately my LED battery gauge seems to have dropped slightly when riding. For the last year it has shown one green LED (12V) with the second green (13V)flicking on and off at times. Now it has dropped one light to the second yellow LED (11V) with one green coming on from time to time. It has even dropped down below 10V once about a week ago immediately after shutting off the engine.

Is it time to change the battery? Have read on the forums about sudden battery failure and I don't want to get stranded.

12,500 miles / 2 years on a battery seems like a short life for a pricey battery. Any recommendations on replacement if that is needed?

This is the guage I am using: