It's not really a big problem, but I thought I'd mention it: if you charge a high-power USB device - such as a cellphone through a high-power USB cable, i.e. not a "dumb" USB device that can only draw up to 500 mA - AND you vape at high power at the same time, the device shuts down, and takes between a minute and an hour to restart.
It's happened to me last night. The mod wouldn't turn itself back on after shutting down. I tried reinstalling the battery, to no avail. Eventually I wrote it off as a loss and left it there. Then I tried again and it worked again. So I experimented some more with various loads on the USB output port and vaping power levels, and it would appear that the mod can't handle more than around 20W total without some kind of fuse tripping for safety.
The fuse - or whatever it is that shuts down the device - seems to reset itself every time after a while, but I wouldn't push my luck trying to find out if it'll trip permanently.
It's happened to me last night. The mod wouldn't turn itself back on after shutting down. I tried reinstalling the battery, to no avail. Eventually I wrote it off as a loss and left it there. Then I tried again and it worked again. So I experimented some more with various loads on the USB output port and vaping power levels, and it would appear that the mod can't handle more than around 20W total without some kind of fuse tripping for safety.
The fuse - or whatever it is that shuts down the device - seems to reset itself every time after a while, but I wouldn't push my luck trying to find out if it'll trip permanently.