Have you seen a lithium battery burn? The reason for the restriction on battery size is to prevent fires starting (or becoming worse) in flight. Remember, it's not just your battery -- if it were permitted, half the passengers might carry large lithium batteries, significantly reducing the chances of surviving what would otherwise be a minor incident. It's worth noting that your 100Wh battery is permitted, anything larger is not (Regulations may change and I have not checked the current situation in detail because I'm not flying any time soon.)Taking a power brick through TSA? Not this one, but most of the times I've flied I've taken a 5v 20000mah(20ah 100wh) battery with me. It was never questioned. The TSA didn't care to question how many watt hours my power bank was. The 40000mah(40ah 200wh) power bank is visibly not much larger than the smaller one I've had longer and I'm nearly certain they wouldn't notice it. At best they're looking for things that seem out of the ordinary. Like if I brought a gokart battery, I bet they'd have questions, but they see power banks all the time and don't have time to question each one
Please tell us when you are flying with a large lithium battery so we can avoid your flight.
Just because a power bank can supply 30W, does not mean that it can supply 30W at 5V. (In fact, it won't. No USB-PD mode (AFAIK) goes above 5A, and that is rare because many USB cables will not take 5A -- that's why the RPi5 PSU has a captive cable.. So, for a Pi5, you need a USB-PD supply that specifically supports 5V 5A.Or how Qualcomm Quick Charge works? None of the spec info I mentioned is a guess, that's how Quick Charge is set up. It's USB PD compatible, and a 30w max port with QC can deliver 5v at 1-6a. That's why so many phones will advertise now that they get all the way up to x charge set in just x minutes, because they're designed to talk to their charger. It's very likely that many brands are going proprietary, so their devices charge better on their chargers and their chargers charge their devices better. But Qualcomm is not a device manufacturer and their chips are utilized in a huge variety of devices, which is probably part of the reason that they included USB PD compatibility in their charging standard(I think since QC 3 or 4). The most recent devices, using QC 5, will charge at a whooping 100w for part of their charge cycle. If QC is USB PD compatible and generally works through device to charger communication, then their is no reason to suspect that the raspberry pi 5 requesting 5v 5a through USB PD, wouldn't receive it from a charger designed to change it's output current based on those kinds of messages and capable of supplying that level of power.
I'm afraid your posts are getting pretty close to it, though perhaps "ignorance" and "arrogance" might be better descriptions.It's interesting what constitutes posting "nonsense".
Statistics: Posted by davidcoton — Fri Sep 27, 2024 9:48 am