Vibration from SVD

[Twinkee308]

Hi all. I've noticed that I occasionally feel my SVD vibrating, or at least that's what it feels like. It seems that this only happens (i think) when I use my 3100mah 18650 Efest with the short tube. I've gone to only using the long tube with that battery as I'm not sure if it's something to worry about or not. In another thread: http://www.e-cigarette-forum.com/fo.../439480-comparing-two-itaste-svds-w-pics.html this was described as stray current.

Can anyone explain what's going on here?

 

[Twinkee308]

So I had dismissed this as a random fluke, however this is now happening with every battery I use (multiple Efest IMR 18500 1100mAh and an AW IMR 18490 1100mAh). These batteries are being used in the short tube (if it makes any difference). Again, I'd like to know if anyone has any insight on what this is and if it could be something to worry about.

 

[ArcherB]

It it helps, mine is doing it too. At first I was afraid it was about to blow up or something, but have since gotten used to it. I would also like to hear some incite others. Mine only seems to do it if I've let it sit for a minute or two.