I just have the solar panels as play things so its no biggie, I could even carry around spare Nimhs that I charged in my Duracell 4 AA fast wall charger!! Not that I would really need to with 2400mah, that is more than my explosive Li-ion Kensington

I assume its actual output is 5volts as USB must be 5 volts to work hehe even though the batteries aren't! Its also good to hear its powering your passthrough, that gives me options for the future should I go back to one with no in-line battery!
Another bonus I guess is if the passthrough short circuits such as the plug isn't in right or the passthrough is Chinese, the vape doesn't end! My Kensington shuts down and will not wake up until plugged in to charge if that happens leaving me with no vape until I get to a USB port!! With this I guess pulling out and replacing the batteries will bring it back to life
