Bushwalk Australia

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.

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.

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.

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

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.