On my standard Moscow, when the display shows 1 bar of battery left everything powers off. The display and battery leds turn off. I never get a blinking battery and the display doesn't stay on (w/ no power assist) like the manual states. The battery leds were showing 2 bars at the time. I then upgraded to the C7 display. With a full charge this display reads 51.8v (makes since because I read that the 16ah battery shows 53.8v). When the display shows 45.1v, everything powers off. No flashing battery and LCD display turned off at the same time that the power assist cut out. I read that the 16ah battery cuts out at 44v so I assumed that the 13ah would go down that far as well. I'm getting around 40 miles with a full battery. Is this normal behavior for everyone else? Thanks!