alt Hacker NewsPower banks were a mistake. It's akin to carrying fireworks in your bag. Ban them all from air travel.
Every one I have owned has been recalled for being a fire hazard. EVERY SINGLE ONE. I stopped buying them as a result. We're talking name brand devices, not junk off AliExpress.
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My power banks are my power tool batteries. Charge or discharge via usb-c; drills and things use traditional rails.
Do you remember the model names?
It's great technology, but sadly humans are fucking morons, and dodgy manufacturers making explosive power banks has lead to the restrictions...
Although honestly how bad is it, powerbanks are very popular, I can imagine in some regions there'd be hundreds of flights taking off daily with 150+ power banks on board (the majority of passengers on a 737), and they've all landed safely.
In my city, I could scan a QR code and pay the parking meter that way. Now they've decomissioned this and you have to go to the app and select the section of the road you're parked at. Why, because scammers made scammy QR codes. Great tech, can't have them because humanity's inherent scumbaggery.
"Phones were a mistake. Every one I have owned has been recalled for being a fire hazard."
I've never had any issues with brand name, not dollar store power banks and I've been using them for more than a decade. I'd totally expect a $5 pink power bank from a alphabet amazon seller to be an issue, but anything modern and reasonable like Anker are very unlikely to cause you any issues. Balancing, protection are very much solved issues at this point for the cell chemistries we use.
If LiPo was the issue, using LiFePo4 or LTO cells for planes would be a totally reasonable alternative too. LTO cells are so safe the manufacturer of them has videos on youtube of them hammering nails into the cells, cutting them with a saw, and crushing them with a press and they don't really care.