Looks like the power requirement for the A4 and AR are the same. So the Poweradd should work. Not sure about the airline stuff. My gut feeling is no. An Amazon review said this. I have verified it so take it with a grain of salt, it may be outdated (it was from 2014):
There are many new IATA rules regarding the transportation of large lithium ion/polymer battery packs, and they may also vary between countries (USA versus other countries and different airlines (see web sites below). Your PowerAdd battery back is rated at 32000 mAh which is therefore 32 x 3.7 = 118.4 Wh which is above the 100 Wh limit. For larger (> 100 to < 160 Wh) battery packs you MAY have to obtain permission from the airline to take up to 2 of them as spares on-board (ONLY permitted as carry-on, not checked-in), you should also package them according to the IATA guidelines (in their original box with electrical tape-sealed input/output ports to prevent a short circuit), and MAY also request you to present a safety sheet for the UN standards (see web pages below). I don’t know whether or not this company (PowerAdd) has performed these tests and will supply you with the safety test sheet (see below where I have found few companies I contacted would provide me with this safety sheet for their lithium ion/polymer batteries.
Lithium Ion/Polymer Batteries allowed on Airlines, packaging and taping the inputs/outputs, AND VERY IMPORTANTLY THE NEW REGULATIONS FOR THE UN MANUAL OF TEST CRITERIA PART III SUBSECTION 38.3 AND DROP TEST IATA DGR 49:
UPDATE: HERE IS THE IATA 2015 GUIDANCE DOCUMENT: SEE SECTION 184.108.40.206 FOR THE TRANSPORTATION OF LARGE (> 100 WH AND < 160 WH) LITHIUM ION/POLYMER BATTERIES:
Flights in the USA
Spare Lithium Battery Protection:
IATA Updated Lithium Ion Passenger Sheet:
IATA Fuller Sheet on Lithium Ion/Polymer Batteries:
UN Manual of Test and Criteria Part III Subsection 38.3:
VERY IMPORTANTLY, the airline MAY require the passenger to obtain permission before taking on-board a lithium ion battery of > 100 Wh and < 160 Wh capacities (only allowed as carry on except for some medical devices), with protection from damage (in original packaging with the input and output plugs taped, and with a copy of the UN Manual of Test and Criteria Part III Subsection 38.3 (Test T1 to T8) and Drop Test IATA DGR 49 sheet showing that the battery passed all of those tests.
I have found that lithium ion/polymer battery suppliers are reluctant to provide you with this sheet or have not tested their batteries to this standard. Anker told me they could not give me this test sheet for their 20000 mAh (74 Wh) Astro Pro 2 Gen 1 battery, Goal Zero were testing their 100 Wh Sherpa 100 battery pack but a company correspondent told me that they would not provide me with the test sheet, while BIxPower immediately provided me with their fully detailed and successful UN Manual of Test and Criteria Part III Subsection 38.3 and Drop Test IATA DGR 49 sheet for their BixPower BP 160 (153 Wh) lithium ion battery pack, and which was signed by the Engineering Manager! This company (BixPower) was the only one I found at that time who was prepared to comply with the IATA and provide such a safety sheet for these tests:
- T1 Altitude
- T2 Thermal Cycling
- T3 Vibration
- T4 Shock
- T5 External Short Circuit
- T6 Impact
- T7 Overcharge
- T8 Forced Discharge
And B: Drop Test IATA DGR 49
I believe that the latter test sheets may be increasingly requested by airlines to prevent inexpensive, poorly manufactered, and therefore potential dangerous large lithium ion/polymer batteries being transported, and I would not wish to be denied permission to transport a lithium ion/polymer battery or, worse still, get prosecuted due to transporting a large lithium ion/polymer battery on an airline which inadvertently caught fire without also having a copy of the PASSED UN test safety sheet for that particular battery.
In conclusion, I believe that it is very important for yourself and fellow passengers to strictly comply with the IATA and airline safety rules regarding these batteries and ensure that you buy safe batteries which have sucessfully passed all of the appropriate safety tests for which the UN Tests safety sheet is provided