Flying with external battery packs

[Watertank]

There are a few external battery packs for iPad and iPhones in the 6000mah and 10,000 mah range. Assuming that they are lithium batteries can I take the on flights in hand luggage? IATA has directions on the topic see http://www.iata.org/whatwedo/cargo/dgr/ ... rFlyer.jpg
But I ca to work out whether the external battery packs would be above or below the 100wh limit.

[Strider]

http://www.rapidtables.com/convert/elec ... -to-wh.htm

[Mark F]

Just multiply the storage capacity by the voltage of the batteries (usually 3.7v). (Watts = Volts x Amps) so 10,000mAh = 10Ah x 3.7v = 37wh.

Note that I used 3.7v which is the rated voltage of the cells in the battery pack, not 5v which is the output voltage after some electronic magic. As I understand it most battery packs tell you the capacity of the batteries at the rated full charge voltage, not the 3.7/5 x 10,000mAh x 95% (5% loss on boost to 5 volts) = 7,030mAh @ 5 volts.

[Watertank]

Thanks for the advice and the links. The battery packs don't appear to tell me what the voltage is but I suppose they are unlikely to such that the 100wh limit is reached.

[Gadgetgeek]

Its also unlikly that the guy at the gate will know or care, so long as they look standard and are not super huge.

[Ellobuddha]

I have recently done a trip and went on about 9 different flights (int and dom) with a Anker 20000mah battery pack in hand luggage with no problems at all. Asked what is was a. View times. No issues.