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How much power does the iPhone 12 consume in a year? What a surprise!

via:驱动之家     time:2021/1/12 1:12:48     readed:114

Apple's iPhone has been with us for 13 years since 2007. The screen size of iPhone has gone through several updating iterations, the battery capacity has increased from the most basic 1400mAh to 3969mah, and the charging power has gone through the dimensions of 5w-12w-18w. It can be seen that apple is very cautious about increasing the battery capacity and charging power.


Let's talk about the latest iPhone 12 series specifically. The battery capacity of the iPhone 12 Mini is 2227mah, the battery capacity of the iPhone 12 is 2851mah, the battery capacity of the iPhone 12 Pro is 2815mah, and the battery capacity of the iPhone 12 Pro Max is 3687mah.


In terms of charging speed, the three Super Cups all support 20W PD fast charging. In our compatibility test, the peak power can even reach 23W. The mini power is slightly lower, generally about 14W.

Compared with the previous series of 18W fast charging, the iPhone 12 has been upgraded to 20W this year. Although it has activated a new market, it has not improved much in terms of speed experience.


It is worth mentioning that the iPhone 12 series mobile phone has cancelled the standard charger for the first time, because there may be many old chargers in the user's home, which is beneficial to environmental protection.

1、 Conversion efficiency and standby power consumption

How much power does the iPhone 12 consume in one year? Let's clear up the problem first,Fast charging and slow charging are the difference of charging speed, which has little effect on power consumption.

Secondly, we normally charge the iPhone 12 with a 20W PD charger.

Finally, we calculate the number of charges per year according to the habit of most people. In other words, this problem can be calculated by calculating the power consumption of the iPhone 12 on a single charge.

Because the mobile phone charging is carried out through the charger, there will be some waste between the conversion, and most of the time the charger is empty on the socket, so we should consider these two data.

1. Conversion efficiency

Charger is essentially a conversion equipment, there will be loss in the process, in the form of heat emitted. Conversion efficiency refers to the ratio of charger output power and input power, which is the utilization efficiency of electric energy. The higher the conversion efficiency, the more power saving.


The power supply standard in China is 220 V 50 Hz. The conversion efficiency of Apple 20W PD charger is tested under the condition of 220 V 50 Hz AC input

The output power of the charger in each voltage range is fully tested, including 9v2.22a and 5v3a. The AC input power and USB output power of the patch panel are measured. Through calculation, the conversion efficiency of the charger is 89.65% and 87.37% respectively.

in other words,The iPhone 12 uses a 20W charger with a power conversion efficiency of about 90%.

2. Standby power consumption


2、 Apple 20W PD charger


Apple's 20W PD charger started withStandard charger for 2020 iPad air 4, which will be sold separately after the release of iPhone 12 at 149 yuan.

This new product continues the style of Apple 18W PD fast charging, adopts fixed pins, the main shell is white paint bright surface, and the input and output end faces are light gray. The charger is pure PD output, and does not support other fast charging protocols. It supports two fixed voltage outputs of 5v3a / 9v2.22a, with a maximum output of 20W.

The reason why Apple's 20W PD is chosen for calculation is that on the one hand, the official product is trustworthy, on the other hand, the third-party charger is good and bad, while avoiding the suspicion of advertising.

3、 IPhone 12 charging



The iPhone 12 consumes about 5.7 kilowatt hours a year, plus the charger's 0.33 kilowatt hours of no-load loss in a yearAbout six kilowatt hours, less than four yuan. Isn't that unexpected?

In addition, the iPhone 12 series supports MagSafe magnetic absorption wireless charging. If you use wireless charging, the power consumption may be a little more due to the conversion efficiency, but it is not much. If you are interested, we will discuss it again.


AppleQuick chargeiPhone 12

Link to the original text:Charging head network

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