What power capacity power bank can be carried on a China Eastern flight through China?

China Eastern Airlines has fairly standard rules for carrying batteries and power banks, but it's worth noting that they are very strictly controlled, and during pre-flight screening or when transferring at airports in China, even without leaving the international zone, they are thoroughly checked, and if there is no power marking or it exceeds the allowed limit, the power bank will simply be confiscated. The requirements are as follows:

• Batteries and power banks can only be carried in hand luggage, absolutely prohibited in checked baggage!!!
• The power of each battery or power bank must not exceed 100 watt-hours (Wh or W/h), with lithium content not exceeding 2 grams.
• Devices with built-in batteries (laptops, tablets, etc.) with power up to 160 watt-hours (Wh or W/h) are allowed, but no more than two.

Some tourists have a misunderstanding about the allowable power marking of 100 watt-hours, since power banks usually indicate capacity in ampere-hours, for example 10,000 mAh or the same 10Ah. Therefore, some think that power banks with a capacity of 100,000 mAh or the same 100Ah can be carried. But this is not the case, these are completely different units of measurement. So read carefully and remember:

Power banks and batteries indicate capacity in ampere-hours (Ah) or milliampere-hours (mAh) and supply voltage in volts (V). To calculate power, you need to multiply these two numbers.

Considering that standard power banks have a voltage of 5 volts, it turns out that the maximum allowed capacity for transport will be 20,000 mAh or 20 Ah, since:

5V * 20 Ah = 100 Wh or W/h

That is, a standard power bank with a capacity of 25,000 mAh, 30,000 mAh, etc. can no longer be carried on China Eastern flights, it will be confiscated.

What power capacity power bank can be carried on a China Eastern flight

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