Just got my 510 pass-thru from Good Prophets (a side note, I can't say enough about GP - ordered on Saturday, rec'd today, plus they're way generous - I got a free atty and bottle with this order, some free juice with my last - yum). On to my question - I plugged my PT in to the usb port, no vape. Let it charge a couple minutes - yes vape. Ok, so it does need to charge, no problem with that - but, do I need to unplug it from the usp when I'm not using it? Will it 'over-charge'? Maybe a dumb question, but there it is. Any answers?