4 ms·

I read this often, but just can't see it. A lot of common use cases are all but impossible with no port. Think, charging on a red eye flight. Using a power b

I read this often, but just can't see it. A lot of common use cases are all but impossible with no port. Think, charging on a red eye flight. Using a power bank for a long hike/camping. Quick charge in the morning when you forgot to charge the previous night, etc. Wireless just doesn't have the speed nor efficiency to compete. Even if speed is solved, I can't imagine how big a power bank would need to be to compete given the efficiency of wireless charging.

nojito 5y ago
Why can’t you use MagSafe while flying?
- orev 5y ago
  For frequent travelers, every gram of weight and size counts. A little charging wire with USBC or Lightning is far lighter and smaller than a (relatively) giant MagSafe disc.
  - nojito 5y ago
    I have a magsafe charger in the same bag with my ipad mini and MBA. The idea that a magsafe charger is an end all for frequent travelers makes zero sense.
Grustaf 5y ago
Isn't the efficiency of MagSafe quite high? Out of curiosity, is it harder to charge on early morning flights?
- silisili 5y ago
  > Isn't the efficiency of MagSafe quite high? A quick search says 75%, which still seems quite wasteful. > Out of curiosity, is it harder to charge on early morning flights? Good point. I guess I just meant that everyone packed in tight using wireless chargers seemed more cumbersome than a simple lightning cable, but perhaps that view isn't reasonable. I've never tried it.
deleted 5y ago
[deleted]
afandian 5y ago
I'm sure they'll sell a charging wallet with a USB plug or something. They've gone to extraordinary and inconvenient lengths on points of principle before (from USB-only on the first iMac through to USB-C only and faulty keyboards on the 2018 macbook pros).
cromka 5y ago
> Think, charging on a red eye flight. https://www.cntraveler.com/story/jetblue-mint-suite-business-class-review https://www.cntraveler.com/story/jetblue-mint-suite-business... https://www.businessinsider.com/inside-qatar-airways-business-class-suite-boeing-787-9-dreamliner-2021-10 https://www.businessinsider.com/inside-qatar-airways-busines... https://www.astronics.com/aircraft-in-seat-power/wireless-charging https://www.astronics.com/aircraft-in-seat-power/wireless-ch... A matter of time before this becomes super common. It's a low-cost perk that provides a service previously not available: a free charger while on the plane. And in the meanwhile, see below. > Using a power bank for a long hike/camping. Plenty of power banks with wireless chargers. I use Anker's own myself, works well. Also can be used as a regular charging pod when simultaneously connected to a power source. > Quick charge in the morning when you forgot to charge the previous night, etc. Fast wireless charging is already a thing. Besides, if you drive, you can charge it while driving, too. The minute public space, business offices, car and regular furniture with wireless chargers built-in become common, it will be a non-issue all of the sudden. However, I reckon it's still a matter of 5 more years, and doubt Apple can hold-off having to switch iPhone to USB-C until then.
- Nextgrid 5y ago
  Wireless charging with power banks is stupid. You're throwing away half the energy of the power bank.
- orev 5y ago
  The weight of all those single purposes wireless chargers on planes is already a nonstarter. Airlines track weight of standard items down to the ounce, to the point that the in-flight magazines finally got removed because they were not justifying their collective weight. While many planes now have inverters where you can use an AC adapter, which can be used for phones, tablets, laptops, etc. wireless chargers can only be used for (some) phones, and they have bad efficiency (which effects fuel usage).
  - cromka 5y ago
    What you described is a de-facto 'now` situation. In 3-5 years, basically everyone who travesl planes will have replaced theirs with wireless charing ones, if they haven't done so already. > and they have bad efficiency (which effects fuel usage). Compared to the amount of energy jet engine consumes each second, a loss on wirelessly charging ~100 phones is really just a joke in comparison: 2500mAh * 3.7 volt * 100 = 925Wh. With, conservatively, 60% efficiency of wireless Qi chargers, that's a 370Wh loss. Not even half a kilowatt-hour. A 787 plane uses 7000 liters of jet fuel, for a total of 490,000 KWh during a 7 hour flight. (https://www.quora.com/How-many-kilowatt-hours-of-energy-does-an-airliner-use-on-a-trans-Atlantic-crossing https://www.quora.com/How-many-kilowatt-hours-of-energy-does...) So charging those phones wirelessly increases the amount of fuel consumed by 0.37/490.000 = 0.00007551020408% If 1 liter of jet fuel currently costs $0.611, that's $0.61170000.000075551=$0.32 cents. 32 US cents. That's the cost of the increased fuel usage.
washadjeffmad 5y ago
Then imagine (magnetic) external contacts, like the Apple Pencil. Wireless data rates (eg- Wifi6) currently exceed wired by a good margin. The only barriers to fully utilizing that are vendor-manufactured and can be solved with both custom firmware and more open app stores.
- Nextgrid 5y ago
  > Wireless data rates (eg- Wifi6) currently exceed wired by a good margin Maybe in lab tests and based on theoretical data rates from datasheets. In practice they don't; most people are in a noisy environment and use shitty consumer-grade equipment. Even if you wanted to pay to make it work, finding good equipment is not easy and often involves trial and error until you find a product that's good enough. In contrast, even the cheapest Ethernet cable will pretty much always work, and when it doesn't it's very obvious where as Wi-Fi has so much potential for "kinda working" where it looks like it works on most speedtests (because TCP corrects for packet loss) but completely craps out on a real-time application such as a video call (where you can't conceal packet loss).
  - washadjeffmad 5y ago
    I'd hazard that the usage rate of RNDIS on iPhones is rather low, though. And you may be right for certain contexts, but ubiquity counts for a lot. "Gosh this bus is making a lot of stops, let me just whip out this USB-C/Lightning to Ethernet adapter and plug into my battery powered switch to access this content on my Raspi file sever" is something I've only said a few times, followed by "why didn't I make this thing ad hoc?" or "why'd I make this service internal only again?". I do however have Wifi6 APs at home and get better than USB HiSpeed data rates from my 10GbE network. The whole network cost around $500, which is probably near what people spend on replacing crappier all-in-one consumer gear over a similar lifecycle. It seems unrealistic that anyone would be required to spend remotely close to that much to make a reliable video call, though.
hmrr 5y ago
My Apple Watch already does this. It’s here already.
pcarolan 5y ago
Yeah, it seems like what's holding it back is a wireless charging standard similar to USB, once we have that and it's ubiquitous - I think we'll just expect wireless and be annoyed by cords. It needs to reach an adoption tipping point though which will likely happen slowly then all at once.

nojito 5y ago

Why can’t you use MagSafe while flying?

orev 5y ago
For frequent travelers, every gram of weight and size counts. A little charging wire with USBC or Lightning is far lighter and smaller than a (relatively) giant MagSafe disc.
- nojito 5y ago
  I have a magsafe charger in the same bag with my ipad mini and MBA. The idea that a magsafe charger is an end all for frequent travelers makes zero sense.

Grustaf 5y ago

Isn't the efficiency of MagSafe quite high? Out of curiosity, is it harder to charge on early morning flights?

silisili 5y ago
> Isn't the efficiency of MagSafe quite high? A quick search says 75%, which still seems quite wasteful. > Out of curiosity, is it harder to charge on early morning flights? Good point. I guess I just meant that everyone packed in tight using wireless chargers seemed more cumbersome than a simple lightning cable, but perhaps that view isn't reasonable. I've never tried it.

deleted 5y ago

[deleted]

afandian 5y ago

I'm sure they'll sell a charging wallet with a USB plug or something. They've gone to extraordinary and inconvenient lengths on points of principle before (from USB-only on the first iMac through to USB-C only and faulty keyboards on the 2018 macbook pros).

cromka 5y ago

> Think, charging on a red eye flight. https://www.cntraveler.com/story/jetblue-mint-suite-business-class-review https://www.cntraveler.com/story/jetblue-mint-suite-business... https://www.businessinsider.com/inside-qatar-airways-business-class-suite-boeing-787-9-dreamliner-2021-10 https://www.businessinsider.com/inside-qatar-airways-busines... https://www.astronics.com/aircraft-in-seat-power/wireless-charging https://www.astronics.com/aircraft-in-seat-power/wireless-ch... A matter of time before this becomes super common. It's a low-cost perk that provides a service previously not available: a free charger while on the plane. And in the meanwhile, see below. > Using a power bank for a long hike/camping. Plenty of power banks with wireless chargers. I use Anker's own myself, works well. Also can be used as a regular charging pod when simultaneously connected to a power source. > Quick charge in the morning when you forgot to charge the previous night, etc. Fast wireless charging is already a thing. Besides, if you drive, you can charge it while driving, too. The minute public space, business offices, car and regular furniture with wireless chargers built-in become common, it will be a non-issue all of the sudden. However, I reckon it's still a matter of 5 more years, and doubt Apple can hold-off having to switch iPhone to USB-C until then.

Nextgrid 5y ago
Wireless charging with power banks is stupid. You're throwing away half the energy of the power bank.
orev 5y ago
The weight of all those single purposes wireless chargers on planes is already a nonstarter. Airlines track weight of standard items down to the ounce, to the point that the in-flight magazines finally got removed because they were not justifying their collective weight. While many planes now have inverters where you can use an AC adapter, which can be used for phones, tablets, laptops, etc. wireless chargers can only be used for (some) phones, and they have bad efficiency (which effects fuel usage).
- cromka 5y ago
  What you described is a de-facto 'now` situation. In 3-5 years, basically everyone who travesl planes will have replaced theirs with wireless charing ones, if they haven't done so already. > and they have bad efficiency (which effects fuel usage). Compared to the amount of energy jet engine consumes each second, a loss on wirelessly charging ~100 phones is really just a joke in comparison: 2500mAh * 3.7 volt * 100 = 925Wh. With, conservatively, 60% efficiency of wireless Qi chargers, that's a 370Wh loss. Not even half a kilowatt-hour. A 787 plane uses 7000 liters of jet fuel, for a total of 490,000 KWh during a 7 hour flight. (https://www.quora.com/How-many-kilowatt-hours-of-energy-does-an-airliner-use-on-a-trans-Atlantic-crossing https://www.quora.com/How-many-kilowatt-hours-of-energy-does...) So charging those phones wirelessly increases the amount of fuel consumed by 0.37/490.000 = 0.00007551020408% If 1 liter of jet fuel currently costs $0.611, that's $0.61170000.000075551=$0.32 cents. 32 US cents. That's the cost of the increased fuel usage.

washadjeffmad 5y ago

Then imagine (magnetic) external contacts, like the Apple Pencil. Wireless data rates (eg- Wifi6) currently exceed wired by a good margin. The only barriers to fully utilizing that are vendor-manufactured and can be solved with both custom firmware and more open app stores.

Nextgrid 5y ago
> Wireless data rates (eg- Wifi6) currently exceed wired by a good margin Maybe in lab tests and based on theoretical data rates from datasheets. In practice they don't; most people are in a noisy environment and use shitty consumer-grade equipment. Even if you wanted to pay to make it work, finding good equipment is not easy and often involves trial and error until you find a product that's good enough. In contrast, even the cheapest Ethernet cable will pretty much always work, and when it doesn't it's very obvious where as Wi-Fi has so much potential for "kinda working" where it looks like it works on most speedtests (because TCP corrects for packet loss) but completely craps out on a real-time application such as a video call (where you can't conceal packet loss).
- washadjeffmad 5y ago
  I'd hazard that the usage rate of RNDIS on iPhones is rather low, though. And you may be right for certain contexts, but ubiquity counts for a lot. "Gosh this bus is making a lot of stops, let me just whip out this USB-C/Lightning to Ethernet adapter and plug into my battery powered switch to access this content on my Raspi file sever" is something I've only said a few times, followed by "why didn't I make this thing ad hoc?" or "why'd I make this service internal only again?". I do however have Wifi6 APs at home and get better than USB HiSpeed data rates from my 10GbE network. The whole network cost around $500, which is probably near what people spend on replacing crappier all-in-one consumer gear over a similar lifecycle. It seems unrealistic that anyone would be required to spend remotely close to that much to make a reliable video call, though.

hmrr 5y ago

My Apple Watch already does this. It’s here already.

pcarolan 5y ago

Yeah, it seems like what's holding it back is a wireless charging standard similar to USB, once we have that and it's ubiquitous - I think we'll just expect wireless and be annoyed by cords. It needs to reach an adoption tipping point though which will likely happen slowly then all at once.