A:AnswerNo physical button for on/off. It'll just automatically charges your device when you plug something into the USB-A port. You charge the battery through the micro USB port.
A:AnswerThere is no "on - off" switch. After you disconnect the USB when charging, the blue lights shut off, and after you remove the USB from the device you are charging, the blue lights will go off. Nice charger, I like it!
A:AnswerI have traveled extensively and always take a portable charger with me. I believe it must be in your carry on bags.
I do not know about the safety of that particular brand, but I have numerous portable chargers I have taken on planes without issues.
Many other airplane passengers use them as well.
A:AnswerYES! I charged 2 iphones very quickly and had juice leftover to charge more. I purchased 2 in case they ran out of power after 1 charge, 2nd wasnt even necessary. It will take 3-4 hours to charge prior to initial use so plan for that.
A:AnswerYou might have a janky one and need to see about returning it, if possible. I just found out I have one that does the same thing - it just sits and has one single flashing light no matter how long it charges. I unfortunately waited too long to open it and check, so I'm stuck with it, I guess.
A:AnswerYes It comes with the charging cord that you attach the micro USB to your Android phone charging jack, and you attach the regular normal sized USB otherside of cord to the larger USB charging jack on the Charger.
A:AnswerIt’s only 1/3 the speed of a fast charger. I haven’t used it to charge from empty but my phone was charged from 3/4 empty to full during a 4 hour trip.