Don't see any threads. My husband bought some mini Protank's that weren't Kanger and we had the same problem. The first one he bought for $7 worked great so he bought one for me. It didn't have air holes in the base, he traded it for another that has bad threading. Since he was buying from a friend who'd ordered the knockoffs from China and I already have a Kanger, we let it go. Does the box say Kanger? MBV has a great rep, I doubt they'd sell knockoffs.
Sent from my NX008HD8G using Tapatalk
Sent from my NX008HD8G using Tapatalk