Power banks are essential in order to ensure that your devices do not suffer from an empty battery during a flight, or at your destination, being able to take a means of recharging them while onboard is quite important – well to many.
Many power banks are allowed on flights but there are certain restrictions on the type and power capacity of power bank that you can take. There are also restrictions which define where they can be carried on a flight.
How did we ever manage to survive without all of those, now indispensable, pieces of equipment for all those years before? Well, love them or hate them, electronic devices are certainly a part of everyday life now and having one run out of charge mid-Facebook is now the end of the world.
What is a power bank?
A power bank is basically a rechargeable battery that is used to recharge other devices such as mobile phones, tablets, Kindles and many other types of electronic devices. They are also known by some as battery packs, but that is hardly surprising given that is exactly what they are.
Power banks normally contain lithium-ion batteries (Li-ion) which are also found in most cellphones, laptop computers etc.
You can charge them by connecting them to a mains source and then, once they are fully charged, can be used as a source of power to recharge your phone somewhere where no other alternative source of power exists – you could even use it in the middle of a desert.
Where can power banks be carried on a plane?
Firstly, and most importantly, power banks are not allowed to be carried in checked baggage. That is the opposite to many things which can only be carried in checked baggage. If you put them in your checked bags then the likelihood is that the bags will be opened and the power banks confiscated by the security agent.
The reason why they are not allowed in the aircraft’s hold is due to the small, but possible, risk of fire from the lithium batteries. If a fire broke out in the hold due to the lithium batteries the cabin crew would not have access to them to extinguish it.
Although there is also the same small risk of fire with those batteries that are carried in the cabin, if that happened, the fire can be dealt with my the cabin crew using fire extinguishers.
Carry on/Hand luggage
Depending on the capacity of each power bank, up to two may be carried per passenger in your carry on bag into the aircraft’s cabin with you (see next item regarding capacities).
Actually the same rules apply to any spare lithium batteries too – see my article Can you take lithium batteries on a plane for more details.
What is the maximum power bank allowed on flights?
The ecfr.gov regulations (adhered to by the FAA) state the following:
“For a lithium ion battery, the Watt-hour rating must not exceed 100Wh. With the approval of the operator, portable electronic devices may contain lithium ion batteries exceeding 100Wh, but not exceeding 160Wh and no more than two individually protected lithium ion batteries each exceeding 100Wh, but not exceeding 160Wh, may be carried per person as spare batteries in carry-on baggage.“
When relating this to power banks, which are normally rated in mAh (milli-amps-hour), it basically means that you can take two power banks with a maximum capacity of 27,000mAh each. If you contact the airline you are flying with it may be possible increase this to two power banks with a capacity of 43,200mAh but you will need their approval (in writing I would suggest).
How to find the capacity of your power bank
Check the outside of your power bank and you will probably find on one of the ends the rating/capacity of the device either on a label or stamped/molded into the case itself. This will probably give the capacity in mAh so will be something like 20000mAh or 10000mAh.
Caution: If you cannot find any markings on the device itself then neither will a security agent. This means that they will not be able to verify if it falls within the rules so will probably err on the side of safety and disallow it.
Calculating the Wh from the mAh value
The FAA legal limit for carrying a power bank on a plane without additional permissions from the airline is 100 watt hours.
To calculate the watt hours (Wh) of a power bank you use the voltage of the internal lithium cells, not the output voltage shown in the specification of the power bank. Lithium battery cells have a voltage of 3.6 volts. The formula for calculating the Watt hours is:
(mAh*Voltage)/1000 = Wh
So if the capacity of a battery is 26,800mAh the formula will be:
The battery therefore has a capacity of 96.48 Watt hours so is under the FAA legal limit of 100 Wh allowed to be taken onboard a commercial aircraft.
Recommended best power banks allowed on flights
This power bank is designed to fall just below the legal limit of 100Wh for carrying on a plane so is ideal for heavy device users.
It has a dual input which means you can recharge it from two separate sources simultaneously to decrease the charge time to 6 hours from flat.
You can use it to charge most USB charged devices including iPhone 8 / X / XS / XS Max / XR (Lightning cable required), Android smartphones and tablets (including the Nexus 7), USB-C MacBooks / iPad (USB A to C cable required). It has three USB outputs so it can charge up to three devices at the same time.
You can purchase the Anker PowerCore 26800 on Amazon.
I have an Anker Powercore 20100 portable charger and have used it without problems for the past couple of years. This PowerCore Essential 20000 is a newer version of the same type.
It has a capacity of 20,000 mAh so well below the allowed maximum for flying but sufficient for most average users needs.
It can do everything the power bank above can do but has a slightly smaller capacity and only has one power input so charging from empty can take up to 10 hours.
It has two USB outputs so can charge two devices simultaneously.
You can purchase the Anker PowerCore Essential 20000 from Amazon.