Can I take this on an airplane?

In the USA, definitely. This is considered a small power bank by the TSA, and is perfectly okay in carry-on luggage but are prohibited in checked bags. Anything under 100 watt-hours is considered a small power bank and is allowed on all aircraft. Larger power banks, between 100 and 170 w/h require special permission from the airline but are completely legal with that permission. Larger than that is always illegal.

what is the input voltage if you plug into a power outlet? 110 and 220v?

Depends on the wall charger you use. So long as the wall charger you hook it up to has dual voltage 100v/210v you can charge without damage when traveling.

10,000 mAh, which for most phones is roughly 3-4 full charges

My charger stops charging after 2 dots. The lights stop flashing. When I disconnect it and turn it on, it only shows 2 dots. Anyone have this prob?

It could be a "contact problem." Those micro-USB connectors do not always "lodge" into the tiny receptacle on the charger as deeply and securely as needed to get a fullly charged power bank. Hold the micro connector firmly in place for a minute or two. Are you seeing each of the four dots flashing in a down-to-up pattern? If so, the charger is capable of being fully charged, and in all likelihood the micro-connector is not maintaining contact while you're away from it. Try some other cables with that micro-connector on one end. One may have a better (i.e. more snug) fit. -- On the other hand, If you don't see all 4 dots flash--one by one in that down-to-up pattern--at the start of charging, then the problem is likely with the charger itself. Return or exchange the charger for a new one (Amazon or the manufacturer should take care of you.) But in most cases when I have difficulty charging my devices, the problem is with the cable, not the charger. Be sure to try at least 2-3 cables.

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Description

About this item
Exquisite and portable, handheld size but high capacity(10000mAh). Unique Anti-Fingerprints design, more cleanly on its surface when you hold it in any places.
Double USB Port (2Amp+1Amp Output), allows for simultaneous charging of your iPad, iPhone, Android, and more at high speed.
Intelligent Safety Protection - Supports over-charged, over-discharged, over-voltage, over-current and short circuit protection, more safe to use.
Backup flashlight, will be a good helper if you need an emergent light like camping, hiking and any emergency occasions.
100% customer satisfaction, 30 days worry-free money back with One Year limited warranty.

Aibocn Baymin Backup Charger - Always stand behind you Portable handheld size (0.78*5.4*2 inches) but high capacity: 10000mAh Power Bank, more stable more easy to take. Double USB Port (2Amp+1Amp Output), you can freely charge of your iPhone iPad Samsung Galaxy HTC and more devices at the same time now. 2 in 1 -- Backup Flashlight with Power Bank Combined perfectly power bank and backup flashlight, you can easy to use them both on camping, hiking and so on. Easy to use - Press ON/OFF button by twice to open it, and press button twice again you can close it. Intelligent Safety Protection - More safety Supports over-charged, over-discharged, over-voltage, over-current and short circuit protection. Automatic shutdown if a short circuit or overload output occurred while unit is charging Widely Used * Use the included cable, your original cable or a third-party certified one (such as MFi) * Most popular smart phones, e.g. smart phones from Apple, Samsung, Google, HTC, Nokia, LG etc * Most popular tablet, e.g. iPad, Kindle, Samsung Galaxy, Google Nexus 7 etc Warranty All products from AIBOCN provide 30 days money back and ONE year limited warranty. Warm Tips - Protective Film Help to Far Away from Scratch There is protective film on black area of the power bank, you can easy to remove it. The protective film will not influence your using even if you do not remove it.