USB A to USB c adapter for car MagSafe usage

[BarrettF77]

I was looking on Amazon and seeing very few options and since most cars have a usb a port and not many are usb c I would like to have the ability to plug and charge my iPhone 12 with the MagSafe.
‘’has anyone found a good male usb a to female usb c adapter that allows higher power draws in the car and can confirm this works?”

 

[Jimpilot]

I was looking on Amazon and seeing very few options and since most cars have a usb a port and not many are usb c I would like to have the ability to plug and charge my iPhone 12 with the MagSafe.
‘’has anyone found a good male usb a to female usb c adapter that allows higher power draws in the car and can confirm this works?”

I was thinking the same thing. A MagSafe charger is of no value over a regular charger in the car if it’s plugged into a USB A port with an adopter I fear. Which may be why folks like Belkin didn’t include charging with their auto adopter.

Not sure I’m right though, anyone with knowledge out there?

 

[gtg465x]

You don't want an A to C adapter. That will only provide MagSafe with 12W of power at most, which will equate to 7.5-9W wireless charging. To get the full 15W wireless charging, you want a charger that plugs in to your car's DC port and has a native 20W or higher USB-C port, like this: https://www.amazon.com/Charger-Anke...ECH|Nekteck&rnid=2528832011&s=wireless&sr=1-5

 

[Jimpilot]

You don't want an A to C adapter. That will only provide MagSafe with 12W of power at most, which will equate to 7.5-9W wireless charging. To get the full 15W wireless charging, you want a charger that plugs in to your car's DC port and has a native 20W or higher USB-C port, like this: https://www.amazon.com/Charger-Anker-PowerDrive-Delivery-MacBook/dp/B07H4M4N5V/ref=sr_1_5?dchild=1&keywords=usb-c+car+charger&qid=1604864610&refinements=p_89:AUKEY|AmazonBasics|Anker|CHOETECH|Nekteck&rnid=2528832011&s=wireless&sr=1-5

So this power thing is still confusing me. If I have a charger that delivers 9V and 3 Amps will it meet the 9 volts 2.22 Amps requirement of the iPhone 12 pro for fastest charge ?

 

[gtg465x]

So this power thing is still confusing me. If I have a charger that delivers 9V and 3 Amps will it meet the 9 volts 2.22 Amps requirement of the iPhone 12 pro for fastest charge ?

Yes. When a charger lists 9V 3A, it means it can provide a maximum of 3A at 9V. USB PD will work like this when you plug MagSafe in to a charger:

1) MagSafe: What voltages do you support and what's the most current / amps I can draw at those voltages?
2) Charger: 5V 3A, 9V 3A, 15V 2A, etc.
3) MagSafe: Okay, I want 9V.
4) Charger: Sets voltage to 9V.
5) MagSafe: Starts drawing however much current / amps it wants, up to the maximum the charger said it could provide at that voltage. The amount of current being drawn is completely up to MagSafe. If it wants 2.22 amps, it can do that since the charger said anything up to 3A is fine at that voltage.

 

[brandQn]

Yes. When a charger lists 9V 3A, it means it can provide a maximum of 3A at 9V. USB PD will work like this when you plug MagSafe in to a charger:

1) MagSafe: What voltages do you support and what's the most current / amps I can draw at those voltages?
2) Charger: 5V 3A, 9V 3A, 15V 2A, etc.
3) MagSafe: Okay, I want 9V.
4) Charger: Sets voltage to 9V.
5) MagSafe: Starts drawing however much current / amps it wants, up to the maximum the charger said it could provide at that voltage. The amount of current being drawn is completely up to MagSafe. If it wants 2.22 amps, it can do that since the charger said anything up to 3A is fine at that voltage.

Has anyone confirmed the charging speeds on a car charger such as the Anker one linked, without the 9V 2.22A profile.

I have the dual-USB-C Anker car charger with 30W/18W ports, and I don’t think MagSafe is reaching 15W. When used in my car, it charges pretty slow.

 

[gtg465x]

Has anyone confirmed the charging speeds on a car charger such as the Anker one linked, without the 9V 2.22A profile.

I have the dual-USB-C Anker car charger with 30W/18W ports, and I don’t think MagSafe is reaching 15W. When used in my car, it charges pretty slow.

I haven't seen tests of car chargers specifically, but people have confirmed that other chargers that support 9V 3A can charge MagSafe at full speed. But MagSafe charging speed is very dependent on phone temperature. Apple lowers charging speed when the phone goes above a certain temperature. Even with the official Apple 20W charger, there are tons of videos showing slow charging because the phone got too warm. I imagine this will be a big problem with MagSafe in the car because the sun is often shining directly on your phone and / or you might be using it for navigation, which tends to heat up phones.

 

[ANDJOE]

This car charger appears to have the proper 9V/2.22A listed but doesn’t seem to be a product you can actually buy yet: http://www.ce-link.com/product/content/202009/1344.html