I noticed on the pioneer4u website updates stopped awhile ago well I’m over update no update the I’m vaping in TCR Dual SS coils and i get no juice dry coils when the cotton gets dry it won’t fire and the screens prompts no juice dry that’s all I need is a warning that my coils are dry also i plugged in the micro USB to just see if it worked or pop then i pressed the up & down buttons the screen shown a plug and battery #1 Battery#2 and the voltage i like that option I will not charge any mod with the USB I charge my 18650’s using Nitecore i4 Intellicharger I have been using it for 4 years when I started vaping. I can say that it did charge up that time and its very fast its chucking clouds and that’s good at 120 joules @ 500 temps F just got it so I ran it thru the testing. The reverse battery protection don’t work but that I can live with its marked can miss it + & - I tested the reverse and I got power at the 510