Does iPhone 11 Pro Max uses different voltage for charging?

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Does iPhone 11 Pro Max uses different voltage for charging?

The issue I have with my iPhone 11 Pro Max is that none of the USB to Lightning cables I've purchased will charge the phone. If I use the cable and charger that came with the phone, it works. I went to Best Buy, I connect their genuine Apple USB cable there to my Iphone 11 Pro Max and none of them works. I've contacted Apple support and he said, "That cable has enough power surge for the device that is on display as the device would not be in use so it would just need a small amount of power surge." I'm entirely understand what this means. He recommends me to purchase a genuine Apple USB cable and try it. However, I still think it's not the cable. Thus, I have this thread.

Here's further troubleshooting I've done. I took out the USB-C to Lightening cable that came with my iphone, which is always works, and put an adapter to the USB-C end to change it to USB-A. Then I connect that USB-A end to my MacBook Pro, power charging hub, wall charge and none of them would charge my iPhone 11 Pro Max. However, when I plug in my Iphone 6 Plus, it charges fine. So, I'm thinking that it has nothing to do with the cable but perhaps how much juice it's coming down to charge the iPhone 11 Pro Max. Thus, is there a way to further prove this hunch?

iPhone 11 Pro Max, iOS 13

Posted on Mar 17, 2020 10:58 AM

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Answer 1

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MrHoffman

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Mar 17, 2020 12:08 PM in response to LCMan

I’ve been using USB-C adapters for fast charging, as the USB-A stuff doesn’t just offer the wattage.

I’d expect the cited Apple USB-to-Lightning cable to work, and have that 1m cable and the 2m variant in use.

A whole lot of USB-A sockets will only 5W slow-charge.

For folks that need more sockets, I’ve been using an Anker multi-port charger.

Though the Anker multi-port chargers I’ve been working with are good for 12W max.

Apple USB-C 18W and 30W chargers are preferable for faster charging.

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Answer 2

LCMan Author

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39 points

Mar 24, 2020 10:17 AM in response to Lawrence Finch

Thank you for all the help. At this point, I'm not looking for fast charging. All I want is able to charge my phone while use Carplay in my car. I assumed most car will have 5W, does that mean I will NOT be able to charge and use CarPlay in my car?

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Answer 3

Mar 17, 2020 11:29 AM in response to LCMan

Okay, so you have one working USB-C to Lightning cable configuration, correct?

The charger and cable the iPhone arrived with.

Which means the iPhone and its socket are all functional.

The USB-C cable that arrived with the device is a charge-only cable.

There are many different and otherwise-incompatible USB-C cables around.

This as USB-C is effectively a connector and signal negotiation spec.

All sorts of stuff can operate via USB-C connection.

What most folks think of as USB, as well as Thunderbolt, and other schemes.

With different (and variously incompatible) cables.

You’ll want a charging-compatible cable and a charger or host socket compatible with what’s called USB Power Delivery.

Apple chargers with the following wattages are compatible:

Fast charge your iPhone - Apple Support

There are unfortunately some utter trash commodity USB PD cable and USB-C charger designs around, too.

https://www.theverge.com/2015/11/5/9674462/usb-type-c-google-engineer-third-party-cables

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Answer 4

LCMan Author

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39 points

Mar 17, 2020 11:47 AM in response to MrHoffman

Yes, the charger and USB-C to Lightning cable that came with the iPhone 11 Pro Max is working. What I need is a USB-A to Lightning cable so I can use it to charge my phone in my car as well as use it for Apple CarPlay. Will this cable do that? If that cable works, why is it that when I connect my phone to the cables that Best Buy have there iPhone 11 Pro connected to, it's not working?

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Answer 5

Mar 24, 2020 10:40 AM in response to LCMan

You’ve seemingly proved that this doesn’t work.

The iPhone 11 Pro and Pro Max ships with a 18W USB-C charger.

Check the owner’s manual for your vehicle for the provided USB wattage, and for any PD support, and for any Qi wireless charging support.

If higher-wattage and Qi charging are not available, there are aftermarket Qi wireless chargers for cars.

And there are larger battery packs for various models of iPhone.

Fast charge your iPhone - Apple Support

http://www.chargerlab.com/iphone-11-pro-max-charging-test/

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Answer 6

Mar 17, 2020 2:35 PM in response to LCMan

iPhone 11 series will not charge with a 5W power source, and most car connections are either 2.5W or 5W. They WILL charge with a USB-A to Lightning cable if the power source can supply 10 watts or more. Not as fast as with USB-C, however.

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Answer 7

Mar 24, 2020 10:24 AM in response to LCMan

I hope newer cars have 10 watt connections now. If not you can use a plug in power supply and connect car play via Bluetooth.

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Answer 8

LCMan Author

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39 points

Mar 24, 2020 11:21 AM in response to MrHoffman

The issue I have is, if it's not connected via the lightning cable, I don't think Carplay will work. I am also not sure if Carplay will work via blutooth either.

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Answer 9

Mar 24, 2020 11:47 AM in response to LCMan

On most cars Carplay connects via Bluetooth.

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Answer 10

Mar 24, 2020 12:03 PM in response to LCMan

CarPlay works via Bluetooth in many vehicles.

Check the owner’s manual for whichever car this is.

Or tell us the make, model, and year, and maybe somebody here knows or can locate the docs.

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