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Radical iPhone X? iPhone X PD charging experience report

via:充电头网     time:2017/11/22 13:01:43     readed:763

Quote from IFIXIT-iPhone X uses a 4.93Wh + a 5.52Wh batteries in parallel to form a battery energy 10.45Wh.

iPhone X operations and interface completely innovative, requiring users to re-adapt to a series of new operations. Such a radical approach in its PD charging strategy? Much nonsense, the following into the text.

This test (dai) test object - iPhone X

The test is divided into two, including "power management strategy testing and analysis" and "temperature strategy and analysis." After testing, some of the features of the iPhone X are the same as those previously tested for the iPhone 8 Plus. This is no longer listed in detail, if you want to understand the new iPhone PD fast charge on the power adapter and wire needs. Welcome back to my previous iPhone 8 Plus experience report.

First, the power management strategy testing and analysis

Yes, that's right Forum application for the new panel got, before the KT001 beauty.

Test 0-100% of the electricity by the test, during the iPhone X to open the flight mode and put the power can not be switched on standby for more than 1 hour and then tested. In order to reduce the impact of external factors on the accuracy of the results, the fans continue to cool down. The recording tool is KT001, a POWER-Z brand under ChargerLAB.

APPLE original 29W

APPLE original 87W

APPLE 2.4A charging

Power Management Strategy Data Management

The PD's overall charging time has improved, about 10 minutes faster. No mistake for you, or more than 2 hours to fill.

Second, the temperature strategy and analysis

My new companion, the Flir one 2 generation thermal imaging camera

The temperature test is still recorded in the same way as the base test, except for the fan. Thermal imagers were recorded at the highest point on a charge of 10/20/30/60/90 minutes respectively. During Flir one to reduce the error has been preheated, the indoor temperature is 28 degrees, the humidity is about 70%. Data from the meter temperature and humidity sensor (this is not to sell advertising Thank you). Due to environmental factors will be a little access control, the data for reference only.

APPLE original 29W, no fan under the curve

APPLE original 87W, no fan curve

APPLE 2.4A charging, no fan curve

Temperature performance in all states

Temperature test data collation

First of all, the iPhone X thanks to the glass back cover and stainless steel frame, plus the internal cooling space smaller, even on the condition of the fan blowing the phone charging pre-charge nor too much efficiency improvement. The only obvious improvement is the lack of a period of 5-10 minutes low-power cooling period, so that charging will not appear the case of power out of line;

Second, as with the 8 Plus previously tested, it enters an ultra-low-power charging period when the internal temperature is too high. Until the temperature dropped after 5V charge;

Finally, the 9V charge will be lower than the 14.8V, but before PD high-power charging stage you can touch a very hot iPhone X. Although it can effectively reduce the hot feeling when it is worn on a mobile phone, doing so will also reduce the cooling capacity of the mobile phone and cause more backlog of heat.

Basic data comparison set

iPhone X overall PD fast charge management strategy is as follows

1, Do not conduct PD communication in the off state, APPLE 2.4A agreement takes effect. Non-APPLE 2.4A protocol startup will be slower;

2, after the start of the PD negotiations, is still selected PDO2, the front 50% will be charged at higher power (maximum does not exceed 15W and depending on temperature and power automatically regulate power);

3, charge to 50% -55% will be reduced to 9-11W (depending on the temperature and power automatic regulation of power);

4, when the temperature reaches a certain, iPhone X will be forced down to very low power. Until the phone temperature drops to 5W power for subsequent charging;

5, charge to about 80%, select PDO1 down to 5V. Please note that this time is still PD charging, just select the 5V gear to reduce the voltage drop loss;

6, charged to about 88%, began to enter the CV until full.

Test the family portrait

to sum up

The introduction of the iPhone8 / X series of PD fast charge for emergency users provides a very good solution. Not only in a short time to solve the user's electricity needs, and conservative programs also minimize battery losses. However, the super heat of individuals is only recommended for use in emergency situations. Currently on the market cottage C52 chip data line has been able to buy, too original wire too expensive friends can consider buying this stuff to play.


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