Well I took a video but I don't know how to do that or even if I can post that but I did do an experiment. I put the batteries back in with the atomizer unattached and it wasn't doing the fluctuation I put the atty back on it and it instantly started moving without being fired at all like the battery fluctuation started immediately. And then I fired it and the percentage went down from 96% to 88% and then once I stopped firing it it went right back up to the 96 percent even though the actual picture of the batteries is still moving around it's not like flying all the way to the bottom and then back up to full it's just moving a lil and constantly. The percentage number doesn't seem to move as much but it has a couple times. I feel like it's just tweaking out. My voltage is staying the same my ohms are the same it's just the picture of the batteries and occasionally the number with the percent next to it. When I fired it just now the voltage went from 2.86 volts to 2.82 and danced around between 2.80 + 2.85 while I was firing it. And it's doing the same thing no matter what tank I put on it. I wouldn't have a problem with it so much except it's going to keep my screen on permanently and I'm not sure how much power that uses but I feel like it probably uses some this device doesn't seem to have a way that I can turn that off
Keep in mind the voltage you see on the screen is the voltage at the coil, not the voltage of the battery. World of difference.
The battery meter on the device is just a graphical representation of the current battery voltage.
As you fire the device, the device will request your prescribed power from the batteries plus a little extra for efficiency. While your batteries are delivering this power, their voltage will drop much below their current voltage state, then slowly return to almost the same voltage they were originally prior to firing the device. This is referred to as Voltage Sag or Voltage Drop. Example: Your battery maybe at 4 volts. Firing the device the voltage may drop to say 3.5 volts then slowly return to 3.9 volts.
Not all devices display this in a level of detail on the screen, I have seen it (can’t remember which device).
The atomizer will have no effect on this voltage sag – the amount of voltage sag will be dependent on your batteries, and your set wattage.
That said, the battery meter on the device should not fluctuate if the device is just sitting idle.