It's very good. Any external battery with a capacity not exceeding 20,000 mAh can be taken on board the aircraft.
Civil Aviation Administration Regulations:
The lithium content of lithium metal batteries exceeds 2 grams. The rated energy value of lithium-ion batteries exceeds 100 Wh (watts). p>100wh exceeds 160wh. It is strictly prohibited to carry equipment containing lithium batteries in checked baggage or carry-on baggage with airline approval to carry lithium batteries exceeding 160wh. Spare lithium batteries can only be placed in carry-on baggage. /p>
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