I just recently ordered a Vamo V5 mod and realized that when I set my LED display to show battery, it shows the voltage the battery is putting out besides a battery meter/puff count. Now, I have read something about checking the firmware that mine is running. My question is, are all V5's supposed to show a battery meter/puff count, or is there a version of the V5 with updated firmware that shows it? It's not a necessity by any means, I'm just curious!