I just got 2 M401 passtroughs.
Connected to wall usb jack, led flashed 3 times and went off.
I connected my atomizer and cartridge, puffed and nothing.
The led turned on, but no vapor.
I tried the 2nd passtrough and same result.
However when I used my half dead battery with that same atomizer I got some vapor.
Do those passtroughs need to be charged?
Do I just keep the usb plugged in or I have to screw them into the regular battery charger?
Connected to wall usb jack, led flashed 3 times and went off.
I connected my atomizer and cartridge, puffed and nothing.
The led turned on, but no vapor.
I tried the 2nd passtrough and same result.
However when I used my half dead battery with that same atomizer I got some vapor.
Do those passtroughs need to be charged?
Do I just keep the usb plugged in or I have to screw them into the regular battery charger?
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