Post B4ZhZGxwy88cv7csdM by azonenberg@ioc.exchange
 (DIR) More posts by azonenberg@ioc.exchange
 (DIR) Post #B4Zeb5J0zbQLTPeRyS by azonenberg@ioc.exchange
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       More USB-PD cursedness. I really need to figure out what's up with this power bank.Laptop is an older Thinkpad with the yellow rectangle power connector. The USB-C ports are also Thunderbolt but are not able to charge the laptop (there's no PD sink functionality).Laptop - phone via USB C-C cable: phone chargesPower bank - phone via same cable: phone chargesPower bank - laptop via same cable: power bank lights up for a second or two then shuts off and does not charge Power bank - random usb charger from REWE via same cable: power bank charges normally
       
 (DIR) Post #B4Zh7I67ASlKK16Oyu by azonenberg@ioc.exchange
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       @mikeymikey hmmm so you're think it mandates PD at the input and won't charge on a 500/900 mA source? Possible, it never occurred to me that it might have a minimum charge rate
       
 (DIR) Post #B4ZhBNIblq5Hc1tS52 by azonenberg@ioc.exchange
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       @mikeymikey laptop port is thunderbolt3 capable though so it'll give a thunderscope enough power to operate (circa 9W iirc)
       
 (DIR) Post #B4ZhDvf4yzwKlTcd2e by azonenberg@ioc.exchange
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       @mikeymikey which seems like it should be enough to charge a power bank at a reasonable rate
       
 (DIR) Post #B4ZhMBk54yA6xFtqvA by azonenberg@ioc.exchange
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       @mikeymikey i guess the other possibility is that the bank is a PD sink and will not charge from 5V under any circumstances and mandates 9V or higher or something which the laptop won't provide. This was actually the scenario i was thinking was more likely
       
 (DIR) Post #B4ZhT59LzJ5sXI0Z60 by azonenberg@ioc.exchange
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       @mikeymikey yeah no idea i have no easy way to measure that from a German hotel room
       
 (DIR) Post #B4ZhZGxwy88cv7csdM by azonenberg@ioc.exchange
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       @mikeymikey the goal was to have my laptop brick be the only mains powered device on the trip and just charge everything else off it directly via usb or indirectly via the power bank. Didn't quite pull it off
       
 (DIR) Post #B4Zo8rlIkmbetx46ue by trobador@mastodon.social
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       @azonenberg i guess you don't have a type A to C with you? If there is a TV or a wall outlet with USB you could try to confirm that your power bank doesn't charge on BC 1.2 alone (didn't know that was a thing)
       
 (DIR) Post #B4ZseWVXi9X04A2r6e by g7vkq@mastodon.radio
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       @azonenberg probably not your explanation…but I was using my powerbank to charge my laptop…but it wasn’t doing what I expected. Instead the laptop was charging the powerbank. Discovered a five second press on the powerbank’s power button toggled between the powerbank providing power to or being charged by whatever it was plugged into.
       
 (DIR) Post #B4aE9FYisFmTW01dLM by azonenberg@ioc.exchange
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       @g7vkq reminds me of the joke of plugging you phone into a usb port on a train and your phone starts charging the train