iPhone Charging.
Seems to be a few questions and queries around the charging support for this years iPhones.
iPhone 8/8+/X Charging
Both the 8 and X will support Fast Charging and Wireless Charging
What is iPhone Fast Charging?
The science behind it
- Watt (W): Total power and capacity of either a battery or an adapter.
- Amps (A): The current at which power can flow between a charger and a battery.
- Voltage (V): The amount of power being pushed from an adapter.
When you charge an iPad, iPhone, or computer, you're resupplying its battery (measured in watt-hours) from a power source like a wall outlet, usually via an adapter. That adapter controls how much power you can get (volts) from that outlet, and the speed at which you get it (amps). Those two factors multiplied result in the adapter's total available power.
Remember it's not about total watts — it's all about the amps and voltage. Modern iPhones and iPads support charging up to a current of 2.4A at 5V, while older devices charge around 1A at 5V. To get the best adapter for your device, you want one that charges at the appropriate amps (1-2.4A) while supplying the right amount of voltage.
A 5W iPhone adapter will pull just 1 amp at 5V, for instance, while USB ports on a computer can deliver 0.5-2 amps, and the 12W iPad adapter can deliver up to 2.4 amps.
The new 29W USB-C Adapter is special because it supports 5V charging at 2.4A (~12W), but it also supports
USB Power Delivery for compatible devices, which allows them to charge at a much higher voltage (14.5V) and lower amps (2A). Because the amps are lower while the voltage is higher, it's more efficient from an electrical standpoint and offers more power to devices that can take advantage of the technology.
What do I need for the iPhone 8/X?
To get the Optimum Charging times for your iPhone you will need the
29W USB-C charger and a
USB-C to lighting Cable.
Its likely that 3rd party chargers and cables would work too.
Wireless Charging
What is iPhone Wireless Charging?
The new iPhones will support wireless charging using the Qi (chee) standard. Qi wireless charging uses inductive charging technology, which involves two coils of copper wire (with a core of iron) - one in the device you are charging (or in a caseattached to that device) and one in a pad or mat on which you lie the device. When you put the two coils next to each other an electromagnetic field is created and that allows electricity to be passed between the two coils. While the two devices need to be touching or within very close proximity, the coils can be sealed within the devices.
The iPhone 8 and iPhone X only support up to 7.5W for fast charging (Fast wireless charging is enabled with a
free software update coming later this year.), but the latest Qi 1.2 standard actually offers up to 15W.
A suitable wireless charging device would need:
- Qi - sounds obvious but it needs to support Qi
- 7.5W of power. Some devices out there support less
- Wall adapter - make sure the wall adapter you use with the wireless pad supports the speed you are after. A 7.5W pad with a 5W wall adapter will only charge at 5W.
- Future Proof - the current Qi standard (1.2) supports charging at 15W. this years iPhone only support charging up to 7.5W but its likely that next year's phones will use the latest standard. You might want to buy a wireless pod that you won't need to change in 12 months time if you're a annual upgrader
- AirPower: Lastly, you might just want to wait a bit. Apple showed off a new wireless charger, called AirPower, that’s set to launch sometime next year, which is expected to be able to charge an iPhone, Apple Watch Series 3, and AirPods simultaneously — typically, chargers can only power one device at a time. It’ll also use a Lightning cable for connectivity, which as mentioned before is useful for iPhone users. Plus, Apple is working with Qi to integrate AirPower features into the Qi standard, so it’s possible we’ll see new third-party chargers with similar functionality not too farther down the road.