Sorry been off line for awhile. The pass through I have works great when plugged into my laptop. When I plug it into the wall charger the battery lights up when I inhale but it's like there is not enough amperage or something. The atty doesn't heat up and I don't get any vapour. This is the wall charger I received with my EVO kit and it charges my batts fine. On the charger is printed output 5.0 volts 1000mA. This should be plenty of power to run the thing. Any ideas?