Comment by Liftyee
5 hours ago
Interesting... anyone know if they've released the rationale/data behind this? I could see a few reasons why power banks present a larger risk than phones/computers (battery capacity, quality control), but it seems like the 100Wh battery limit already covers one of these.
In a similar vein, China banned non-CCC certified (the equivalent to UL or CE) power banks on flights from 2025, which seems to be targeting the quality control side of the problem. Not just on paper - the security officers inspected every lithium battery I was carrying, even the one in my flashlight.
Discussion is included in the Dangerous Goods Panel report, agenda item 4.3 (pages 39-41) and Appendix E (beginning page 89). https://www.icao.int/sites/default/files/DangerousGoods/DGP%...
Paragraph 4.3.3:
> While data indicated that portable electronic devices were more often the cause of fire in aircraft cabins than power banks were, the latter were a significant concern due to their increased use and a prevalence of lower-quality products with defects or vulnerabilities that were more likely to lead to thermal events. Power banks were also not offered the same level of protection that batteries installed in portable electronic devices were provided. The amendments therefore focused on power banks.
Another possibility is that you tend to keep an eye on where your phone and laptop are; there have been some plane fires where people drop a phone into a seat and it ends up getting bent, but at least they notice it fairly quickly. (Will people know the direction if their USB-C power bank is charging from their phone or their phone is charging from their power bank?)
Look up Air Busan Flight 391, a power bank in someone's carryon caused the entire plane to burn down in 5 minutes. The airplane (an Airbus A321) was destroyed. The only reason there was not total loss of life was because the plane hadn't taken off yet.
https://en.wikipedia.org/wiki/Air_Busan_Flight_391
This could happen with any battery-powered device though. But I don't see ICAO or FAA banning e.g. laptops any time soon, even though they may carry more energy than a single power bank.
Have you seen what passes for quality on the random power banks sold by Amazon?
> I could see a few reasons why power banks present a larger risk than phones/computers (battery capacity, quality control), but it seems like the 100Wh battery limit already covers one of these.
Yeah, and it's the other one that is the main problem. It is simply impossible to know the quality of a power bank by looking at it.
> China banned non-CCC certified (the equivalent to UL or CE)
And it costs nothing to stamp the logo as if you're certified without actually going through any certification. Powerbanks are almost expendable, and can be acquried from supermarkets, corner shops, airports, even night clubs. There are even disposable ones (horrible idea). The more complex and expensive the device (like a laptop), the more certain can you be that there will be at least some quality control. In a $5/5eur powerbank, which any one could potentially be, it's almost guaranteeed there would be none.
One deterrent is, in China corporate criminals are executed, like those who put melamine in infant formula.
That's awesome for consumers in China.
What about the rest of us?
That kind of fraud is oftentimes only a fine in many other nations.
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