Battery Gauge

[OldGuy]

I haven't closely watched my gauges very carefully over the past three years, but my warranty is moving toward expiration and want to be sure to discover any problem before warranty expiration.
My '09 Z will turn three at the end of November and nothing has gone wrong, although I only have 10,000 miles on the non-DD car.
But I'm watching my battery charge gauge and see that it hardly ever moves. It's not stuck, as it moves a bit behind, over and past the 14 on the dial. Is this normal?
I only drive the car on nice days in the summer and 3300 mi./yr I plan to keep it in the family for the rest of my life and after. I want to keep it perfect and have this gauge replaced if it's slow or non-functional.