Is a 20000mAh power bank allowed in flight in China?

Power Bank Regulations for Air Travel in China

When traveling by air in China, it's important to adhere to the airline's regulations regarding power banks. These regulations aim to ensure safety and minimize potential fire hazards.

Limits on Power Bank Capacity

Chinese airline regulations allow passengers to carry power banks with a capacity of up to 20,000mAh. However, it's crucial to note that capacity alone is not the only determining factor.

100Wh Limit

In addition to the 20,000mAh capacity limit, power banks must also adhere to a maximum energy content of 100Wh (watt-hours). This limit is designed to prevent overcharging and potential fire risks.

Calculating Power Bank Output

To determine the energy content (Wh) of a power bank, it's necessary to calculate its wattage output. The formula for calculating Wh is:

Wh = Voltage (V) x Current (A) x Time (h)

For example, a power bank with a 5V voltage and 2A current would have a Wh of:

5V x 2A x 1h = 10Wh

Compliance Checks

Airline staff may conduct random checks to ensure that power banks meet the regulations. They may ask passengers to present their power banks for inspection and verify the Wh rating.

Consequences of Non-Compliance

Power banks exceeding the 100Wh limit or lacking proper markings may be confiscated or restricted from being carried on board. This can result in inconvenience and potential loss of valuable devices.

Recommendations

To avoid any issues, it's best to choose power banks that clearly indicate their Wh rating and are certified to meet safety standards. Passengers should also consider purchasing power banks with capacities below 20,000mAh to minimize the risk of non-compliance.

By understanding and adhering to these regulations, passengers can safely and conveniently bring their power banks on flights within China.