November 28, 2020

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Apple’s MagSafe Charger In-Depth Review: Limited Fast Charging and Failing in Speed

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Recently I read “The Three-Body Problem”, in which there is a segment that attracts me very much: “It is just a wireless power supply, the power supply uses microwave or other forms of electromagnetic oscillation beam to transmit electrical energy, in a certain space to form a power supply field, any electrical equipment in this range can use antenna or magnetic resonance coil to receive electrical energy.” This is the science fiction writer’s ultimate vision of wireless charging.

Back to reality, since the new release of the iPhone 12, all series support wireless charging, and adopted the new wireless charging design, maximum charging power can be up to 15w, Apple also at the conference launched a MagSafe magnetic suction wireless charger, this is Apple’s first official mass production of mobile wireless charger, marked the iPhone officially entered the new era of wireless charging. Could this be an important step towards the ultimate charge? Let’s take a look!

First, display out of the box

The first is the unpacking part. The MagSafe Magnetic Wireless charger box is still a typical Apple design, white tone, square shape. The front of the box features the Apple logo, MagSafe Charger, and a rendering of the product’s appearance.

On the back is the product name, USB-C and use scenario diagram. The product has passed CE certification.

Parameters and other information are printed on the side, and excerpts are as follows:

Product name: MagSafe Charger

Manufacturer: This product is manufactured under license from Apple Inc

Distributor: Apple Computer Trading  Co., LTD. 

Model: A2140

Input: 5Vdc 3A or 9Vdc 2.2a

The other side is the company information in English, which will not be repeated.

The side sticker, which says compatible device information, works with MagSafe on the iPhone (with the latest version of iOS).

There is a hook on the top of the box, which is convenient for the products to be displayed and sold. Beside the hook, there is an easy to pull open strip, which is easy to open the package.

Open the packaging box and use cardboard to fix the wireless charge inside.

A paper groove is arranged on the right end of the cardboard to place the charging board, and the middle paper jam is used to fix the cable. The whole package is paper-based, which is a good reflection of Apple’s environmental action.

The way you pull it out doesn’t require any tools, it’s very simple. Firstly, take the magnetic charging plate module out of the carton.

Then open the one-time buckle of the wire rod to take out the wire rod.

Finally, pull out the USB-C end and you can use the MagSafe magnetic suction wireless charger.

An overview of everything inside the package, including the Apple MagSafe Charger, three packets of vouchers and instructions.

Second, MagSafe magnetic wireless charger appearance display

The Apple MagSafe Charger isn’t much of a surprise at first glance. It’s just a shrunken Apple-style wireless charging pad if you don’t understand its magnetic properties and the range of usage scenarios that come with them. But given the huge number of iPhones shipped each year, and Apple’s deep mass base, the new magnetic-powered wireless charging app on the flagship iPhone is bound to cause a change in user habits.

In terms of appearance, the top surface of charging board is made of plastic board, with smooth surface and skin-like handle, and strong unity. As Apple products have always been excellent in dust and water resistance, there are even some expectations for MagSafe chargers to be waterproof, which we will test later if conditions allow.

The bottom and the edge of the aluminum alloy shell design, delicate with a sense of technology. The feeling is also very good. The design of this case is common in Apple products, is a classic at hand.

From the side, with a line of arc is silver strewn at random, it seems very elegant.

The design also reminds me of the circular launch posters that have been the subject of a lot of speculation, suggesting early on that the big innovation will be a new way of wireless charging from the MagSafe Charger.

Apple is known for its love of salutes, and the MagSafe Charger bears some resemblance to the design of Apple Park, Apple’s spaceship headquarters.

Apple’s MagSafe charger comes with a USB-C input cable,

The cable and USB-C interface are bending resistant.

USB-C terminal position is normal,

Take a look inside the USB-C head with a macro lens. There are 14 pins.

Third, size and contrast

The length of the cable measured with a tape measure was about 3.2 feet.

The cable diameter is 0.1 inch.

The body diameter of the charging board is 2.19 inches.

The Apple MagSafe charger weighs 0.12 pound.

Comparing the ZMI Purple wireless charger with the Apple MagSafe Charger shows that the two are not of the same order of magnitude.

Fourth, magnetic absorption effect

Many friends are very concerned about magnetic effect, so we specially for you to make a vivid GIF, so that you can have a more intuitive understanding. After attaching the MagSafe charger to the iPhone 12, you can see the iPhone 12 shaking in the hand at a normal amplitude, and both are relatively stable in connection.

Others wondered how well the MagSafe charger hooked up to the previous iPhone. Here, on the iPhone 11, there’s still some suction, but it’s not as strong as the iPhone 12.

Lay the iPhone 11 flat and you can easily yank off the MagSafe charger

The small series tried to shake at a normal range like the iPhone 12, but the MagSafe charger easily fell off.

Fifth, MagSafe charger compatibility test

Many friends are interested in what chargers can be paired with MagSafe chargers for quick charging, so we specifically tested this. The test was tough on the environment, especially the temperature. Before each charger was tested, we used an ice-covered heat sink to cool the charger and the iPhone 12, while keeping the battery power of the phone below 20%. Here are the results.

Use Apple 18W PD Charger A1695 with MagSafe charger to charge iPhone 12 with voltage 9.06V, current 1.61A and power 14.68W.

Use apple’s 20W PD Charger A2244 with MagSafe charger to charge the iPhone 12 with voltage of 8.93V, current of 2.05A and power of 18.38W.

Use apple 30W PD charger A1882 with MagSafe charger to charge iPhone 12 with voltage of 8.95V, current of 2.05A and power of 18.42W.

Apple 61W PD charger A1947 with MagSafe Charger for iPhone 12 charging, voltage 8.96V, current 2.05A, power 18.45W.

Apple 96W PD charger A2166 with MagSafe charger is used to charge iPhone 12 with voltage 9.06V, current 2.01A and power 18.29W.

Use Anker 30W PD Charger A2615 with MagSafe charger to charge iPhone 12 with voltage 9.02V, current 1.35A and power 12.19W.

Use Anker Anker 30W PD Charger A2014 with MagSafe charger to charge iPhone 12 with voltage 9.09V, current 1.32A and power 12.07W.

Use Anker Anker PD Charger A2616 with MagSafe charger to charge iPhone 12 with voltage 9.02V, current 1.33A and power 12.08W.

Use Anker 20W PD Charger A2633 with MagSafe charger to charge iPhone 12 with voltage of 8.85V, current of 2.03A and power of 18.01W.

Baseus 65W PD charger BS-C915 with MagSafe Charger is used to charge iPhone 12 with voltage 9.17V, current 1.96A and power 18.03W.

Baseus 20W PD charger CCCJGCC with MagSafe Charger is used to charge iPhone 12 with voltage 9.03V, current 2.02a and power 18.32W.

Use ELECJET 65W 2C1A Gallium nitride charger X21 with MagSafe charger to charge iPhone 12 with voltage 9.09V, current 1.99A and power 18.15W.

JSAUX 20W PD charger JS-CH-2001 is used with MagSafe charger to charge iPhone 12 with voltage 9.02V, current 2.02a and power 18.29W.

The 20W Huacron PD Charger HKL-USB66S is used with MagSafe charger to charge iPhone 12 with voltage 9.05V, current 2.00A and power 18.15W.

Use Lenovo 65W PD Charger LC-658 65W with MagSafe Charger to charge iPhone 12 with voltage 9.12V, current 2.00A and power 18.28W.

Use Macdodo 20W PD charger CH831 2.0 with MagSafe charger to charge iPhone 12 with voltage of 8.99V, current of 2.03A and power of 18.25W.

Use MI 65W Gallium nitride Charger AD65G with MagSafe Charger for iPhone 12 charging, voltage 8.93V, current 2.04A, power 18.31W.

Use MI 65W Charger AD651P with MagSafe charger to charge iPhone 12 with voltage of 8.89V, current of 2.03A and power of 18.12W.

The Mophie 20W PD charger, CHG-Wall-PD-20W-BLk-CN, and the MagSafe charger work together to charge the iPhone 12 with A voltage of 8.91V, current of 2.03A and power of 18.14W.

The Nubia Candy 65W Gallium nitride charger PA0203 and MagSafe charger are used to charge the iPhone 12 with voltage of 8.81V, current of 2.05A and power of 18.12W.

Charge the iPhone 12 using the Original Charger of OnePlus 8T with MagSafe charger, with voltage of 8.93V, current of 2.04A and power of 18.27W.

Use RAGAU 18W PD charger R9202 with MagSafe Charger to charge iPhone 12 with voltage 9.25V, current 1.29A and power 11.99W.

Use RAVPower 90W 2C charger RP-CPCN001 and MagSafe charger to charge iPhone 12 with voltage of 8.94V, current of 2.04A and power of 18.26W.

Use RAVPower30W PD charger RP-PC120 with MagSafe charger to charge iPhone 12 with voltage of 9.18V, current of 1.98A and power of 18.22W.

Use SHARGE flash 65W 2C1A Gallium nitride Charger S90 with MagSafe Charger for iPhone 12 charging, voltage 9.09V, current 2.01a, power 18.31W.

Use UIBI pomelo to charge iPhone 12 with voltage 9.18V, current 1.31A and power 12.10W in combination with MagSafe charger than 30W PD charger G30.

Use the little black 18W PD charger CDRA3Q with MagSafe charger to charge the iPhone 12 with voltage 9.08V, current 1.33A and power 12.15W.

Use the Opich 20W PD Charger HN228B with the MagSafe Charger to charge the iPhone 12 with voltage of 8.95V, current of 1.79A and power of 16.06W.

Charge the iPhone 12 with A voltage of 9.18V, A current of 1.98A and A power of 18.18W using The New Sprint 20W PD charger PN205C and MagSafe charger.

Use Steck 20W PD Charger P39-1C-20W with MagSafe Charger to charge iPhone 12 with voltage of 9.05V, current of 2.00A and power of 18.16W.

ZMI purple meter 30W PD charger HA722 and MagSafe charger are used to charge iPhone 12, with voltage of 8.97V, current of 2.04A and power of 18.36W.

ZMI Purple meter 65W PD charger, HA712, and MagSafe charger are used to charge iPhone 12, with voltage 9.08V, current 2.01A and power 18.33W.

Use the Zendure 65W Gallium nitride charger ZD3P65PD with the MagSafe Charger to charge the iPhone 12 with A voltage of 9.15V, current of 1.98A and power of 18.14W.

Use the Zendure 20W PD charger ZD1P20PD paired with the MagSafe charger to charge the iPhone 12 with A voltage of 8.97V, current of 2.02a and power of 18.18W.

Summary of MagSafe charger compatibility tests

First of all, apple charger 20W, 30W, 61W, 96W can give 18W power; Second, in addition to the newly launched 9v2.22A 20W charger, most of the chargers with PPS can also give 18W power. The final trigger mechanism must also be low power, and the phone must be very cold, especially if the iPhone 12’s internal components are ice.

Sixth, wireless charging phone compatibility test

We used the 20W charger that comes with the iPad Air4 to power the Apple MagSafe charger, which is 8.98V 0.04A 0.37W without the phone.

Put the iPhone 11 Pro Max on the MagSafe charger, which powers 8.99V 0.58A 5.24W.

Put the iPhone XS on the MagSafe charger, which powers 8.99V 0.57A 5.18W.

Put the iPhone SE2 on the MagSafe charger, which powers 8.99V 0.58A 5.27W.

Put the iPhone 11 Pro on the MagSafe charger, which powers 8.99V 0.57A 5.18W.

Put the iPhone 11 on the MagSafe charger, which powers 8.99V 0.56A 5.09W.

Put the iPhone XS on the MagSafe charger, which powers 8.99V 0.56A 5.10W.

Put the iPhone 12 on the MagSafe charger, which powers 8.96V 2.05A 18.44W.

Summary of wireless charging mobile phone compatibility test

As you can see, using MagSafe to charge the iPhone12’s pre-iphone models is generally around 5W, regardless of temperature or other factors. It should be noted that this is only at the output power of the charger, and the actual power charged into the phone is lower, so it is not recommended that you use MagSafe to charge the iPhone12 before the model. Although it can be charged, it is not only slow, but also there is no magnetic coil at the end of the phone, and the placement is not very stable.

Seventh, charge measurement

  1. IPhone 12 without case test

Use Apple MagSafe charger to charge the iPhone 12 without a case, and the input end starts with A brief climb to shake hands in 9V 1.5A gear. After about 20 minutes, the current will stabilize around 1A. The fluctuation range of the whole process voltage is small, and the intermediate current from 1 hour 30 to 3 hours has a large periodic fluctuation. After about 3 hours, the current gradually drops until the end of charging, and the maximum power at the input end of wireless charging is 8.92V 2.02A 18.09W.

  1. MagSafe silicone protective case test for iPhone 12 | 12 Pro with 60 dollars

Apple MagSafe charger is used to charge the iPhone 12 with the special MagSafe silicone case of iPhone 12 | 12 Pro with 60 dollars. After A short climb at the beginning of the input end, 9V 1.5A gear is used to shake hands. After about 15 minutes, the current will stabilize around 1A. The fluctuation range of the whole process voltage is small, and the intermediate current from 1 hour 35 to 3 hours has a large periodic fluctuation. After about 3 hours, the current gradually drops until the end of charging. The maximum power of the wireless charging input terminal is 8.91V 1.97A 17.60W.

  1. Test the Transparent shell of iPhone 12 DE Bonks (without magnetic absorption function)

Apple MagSafe charger is used to charge the iPhone 12 with transparent shell (without magnetic suction). At the beginning of the input end, after a short climb to shake hands at 9V gear, the current briefly breaks through 2A, and the current is always around 1A. The voltage fluctuation of the whole process is small, and the intermediate current from 1 hour 35 to 3 hours 20 minutes has a large periodic fluctuation. After about 3 hours and 20 minutes, the current gradually drops until the end of charging. The maximum power of the wireless charging input terminal is 8.91V 2.09A 18.70W.

Judging from the maximum power during charging, iPhone12 has no significant influence on the maximum power of charging whether it is wearing a case or not, and whether the mobile phone case has magnetic absorption function.

Eighth, the whole charging process

  1. iPhone 12 without casing test

The test data were tabular, and apple’s MagSafe charger was used to charge the iPhone 12 without a case, which charged 42% of the battery in an hour. Charge 63% battery in 2 hours; The journey takes about 3 hours and 21 minutes.

  1. MagSafe silicone protective case test for iPhone 12 | 12 Pro with 60 dollars

Apple MagSafe charger is used to charge the iPhone 12 with 60 dollars | 12 Pro special MagSafe silica gel case, which can charge 41% power within 1 hour. Charge 68% of the battery in 2 hours; The journey takes about 3 hours and 33 minutes.

  1. Test the Transparent shell of iPhone 12 DE Bonks (without magnetic absorption function)

Use Apple’s MagSafe Charger to charge the Bangkes-transparent (non-magnetic) case iPhone 12, charging 39% of the battery in an hour. Charge 60% of the battery in 2 hours; The journey takes about 4 hours and 20 minutes.

In tests, the iPhone 12 took about 50 minutes to recharge with MagSafe silicone case, which is not particularly fast, but apparently faster when wearing the magnetic-absorbing case.

Ninth, temperature test

Many readers are concerned about the heat generated by chargers, so we included a temperature rise test. The condition was to charge the iPhone 12 without a case for an hour using the MagSafe charger in a thermostat at about 25 ° C. The temperature of the charger and the mobile phone were tested respectively at the beginning, 15 minutes after charging, 30 minutes after charging, and 1 hour after charging.

The MagSafe charger had a maximum temperature of 27.9 ° C prior to the start of the test.

The maximum temperature of the iPhone 12 attached to the MagSafe charger was 29.9 ℃.

After 15 minutes, the current high temperature is 36.1 ℃, concentrated in the area where the phone is in contact with the MagSafe charger.

After 30 minutes, the current high temperature was 34.4 ° C, still concentrated in the area where the phone was in contact with the MagSafe charger.

Remove the phone and test the MagSafe charger separately at a maximum temperature of 35.2 ° C

An hour later, the current high temperature was 40.7 c, still concentrated in the area where the phone was in contact with the MagSafe charger.

Remove the phone and test the MagSafe charger separately at a maximum temperature of 39.4 ° C.

Summary of temperature test

In the past, we used to test the temperature of the charger with a full load of one hour. However, it is difficult to achieve this on Apple MagSafe charger, so we simulated the user’s usage to test the temperature. Although the time is strictly controlled in a 25℃ thermostat, the data are still not widely representative. However, as temperature is an important factor affecting charging, we still put the data in the paper for your reference only.

Summary of charging head network

Reviews of Apple’s MagSafe charger have been eventful, and initially we followed the normal testing process, with the article about to be completed. But one fan asked what charger would work with the Apple MagSafe? We also tested various chargers and found that MagSafe’s power was “normal” almost only if it was paired with the official 20W charger, which seems to defy normal usage logic. Then we realized that temperature is a key factor, so we found that temperature restricts the performance of MagSafe. Later, when the temperature of MagSafe and mobile phone is extremely low, the power can be “up”. The easiest way to do this is to throw it in the fridge, but it’s not easy to take pictures and test it, so use an ice pack. It works, freezing for a while before charging, and most of the chargers tested held up to 18W. So, after many twists and turns, this article and you can meet.

In terms of appearance, the top surface of charging board is made of plastic board, with smooth surface and skin-like handle, and strong unity. The bottom and the edge of the aluminum alloy shell design, delicate with a sense of technology, feel is also very good. The design of this case is common in Apple products, is a classic at hand.

In terms of compatibility, most PD chargers above 18W can be equipped with MagSafe charger for quick wireless charging of iPhone 12 at extremely low temperatures. The MagSafe charger can also be used to wirelessly charge previous iPhone 12 models, but not quickly.

In terms of performance, MagSafe charger is a perfect match for iPhone 12 series. The peak power can indeed reach more than 15W, but due to the influence of temperature, power and other factors, the duration is not long, and the total charging efficiency is really not high. Friends who want to use it while they’re doing it may not be as good as they think they are.

In short, Apple MagSafe chargers do offer new experience — to the user with the new way of charging, lovable wireless charging the appearance of the UI, the science and technology feeling extremely, smooth magnetic suction process these are the design of the Apple style – can no longer charging through the interface, but not increase the power, make MagSafe chargers, difficult to control the heat dissipation of more chicken ribs. Apple’s MagSafe magnetic charging will only win in the sense of ceremony and fail in the sense of speed, especially as domestic handset makers set their wireless charging ambitions on fire.

If there’s anything to look forward to with the next MagSafe charger, it’s going to be a power boost, a cooling solution, and finally a price that is reasonable.

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