Introduction
Recently, issues such as "iPhone 15 heat generation" and "iPhone 15 wireless charging efficiency is poor" have been attracting attention online. In fact, it seems that the cause is the smartphone case... What is the biggest factor that affects wireless charging? Also, is there an ideal iPhone case that is compatible with Magsafe? What are its features?
Let's take a look at the answer right away! ↓
Clickable Table of Contents
Why iPhone wireless charging is inefficient
- How iPhone wireless charging works
- Magsafe Wireless Charging Principle
- Heat generation due to poor Magsafe (wireless) charging
- Summary | Reasons for poor Magsafe (wireless) charging efficiency
- Check out how to keep your iPhone from overheating
Characteristics of an ideal Magsafe case
Frequently asked questions about "Wireless"
Why iPhone wireless charging is inefficient
How iPhone wireless charging works
- Mag = Magnet
- safe = safe (charging)
By incorporating MagSafe into your iPhone, chargers and cases can attach firmly to your iPhone using built-in magnets , enabling wireless charging.
Magsafe Wireless Charging Principle
Why can it be charged without a cable? Wireless charging (magnetic wireless charging) is based on the same principle as "electromagnetic induction" that generates electricity.
Taking the iPhone 12 as an example, as shown in the image, the iPhone with MagSafe function has a circular metal wire inside. A circular bundle of metal wires is called a "coil," and when a magnet is brought close to the center of this "coil," electricity flows inside the coil. This phenomenon is called "electromagnetic induction."
The generated magnetic field interacts with a "coil" in the receiving device, generating electricity and charging the battery.
Also, if the magnet is stopped moving, there is no change in the magnetic field lines received by the "coil", so the current stops.
To ensure proper charging, it's important that the charging contacts are magnetically attached and that your iPhone and wireless charger are not too far apart.
In other words, the reason why iPhone wireless charging is inefficient is likely because the connection is not tight or the distance between the iPhone and the wireless charger is too far.
NIMASO Fun Facts: Image: lab-brains.as-1 In fact, electromagnetic induction is used in many places, such as power generation facilities, wireless chargers, and IC cards, where it is most commonly used. In order to strengthen the induced current (current generated by electromagnetic induction), Increasing the number of turns in the coil Move the magnet quickly Strengthen the magnetic force of the magnet
Heat generated by Magsafe (wireless) charging
Things you should know about electricity generation: It is true that electromagnetic induction generates more heat than traditional wired charging.
Things you should know about wireless charging: When you use wireless charging, the temperature of both the smartphone and the wireless charger can be kept within a safe range (reducing the current).
Relationship between heat generation and charging efficiency:
Left: usb-c wired charging; Right: Apple magsafe wireless charging
The above is the change in iPhone battery charge over the same 30-minute period.
The bottom line: less heat is more efficient
Truth: It generates heat because it is inefficient. However, it can also be said that deliberately making it less efficient keeps the smartphone temperature within a safe range.
Explanation of the comparison images:
During the first 0-6 minutes, the temperature of both wired and wireless charging rises sharply, but between 6-30 minutes, differences emerge: the temperature of wireless charging continues to rise, whereas the temperature of wired charging peaks 6 minutes into charging and then continues to drop.
Overall, wireless charging generates more heat than wired charging, making it less efficient than wired charging. By reducing the temperature of heat generation as much as possible, charging efficiency can be improved to some extent.
When using wireless charging, we recommend removing your iPhone case or choosing a case that allows for easy heat dissipation.
Summary | Reasons for poor Magsafe (wireless) charging efficiency
- ① Contact misalignment
- ② Heat generation or insufficient heat dissipation
- 3) Contact distance is too far and foreign matter is attached or magnetic force is applied
Check out how to keep your iPhone from overheating
①Be careful where you place your charger!
Do not place the charger near places that are prone to high temperatures.
②Remove smartphone accessories such as thick cases and back pockets of your smartphone‼
If you have any smartphone accessories attached, it may become hotter while charging, so be sure to remove them beforehand.
③Avoid using your iPhone for long periods of time while it is charging‼
Whether or not your smartphone is charging, it can become hot if you use it for an extended period of time.
Characteristics of an ideal Magsafe case
- With magnet: The iPhone magnet stays firmly attached without coming off
- Thin and breathable: Reduces heat and increases charging speed
- Flat, scratch-resistant back: The magnetic force is strong and the back of the case is easily scratched.
- Another ideal feature: A highly convenient case with a stand that doesn't affect the ring.
NIMASO recommended cases:
Thin and easy to dissipate heat; N52 magnets fit snugly; Convenient with stand; Long-lasting clarity
[The Mechanical Magsafe Case, this option takes into consideration the situation in which it is used...]
For details on the NIMASO Kikou Clear Case, click here →
About the NIMASO lottery event
To celebrate the release of the iPhone 16, NIMASO will be holding a prize draw event from August 29th to September 30th. We have prepared luxurious prizes and will hold three draws. Join now to win new Apple products such as the iPhone 2024 and AirPods 2024!
Link: https://go.nimaso.co.jp/article
Q&A | Frequently asked questions about wireless
Q: Does the card affect wireless charging?
A: Yes. Bringing a strong magnetic object close to the watch may cause magnetic failure.
Magnetic data on cash cards, credit cards, telephone cards, floppy disks, etc. may be lost.
Q: What precautions should I take when wireless charging?
A: Remove everything except your smartphone and its case while wireless charging.
Foreign objects such as coins, credit cards, and other metal objects pick up power from the generated magnetic field and dissipate it in the form of heat, which can cause damage to both the device and the user.
Q: What are the benefits of MagSafe batteries?
A: Charging without cables is innovative and convenient.
Related articles:
- When will the 4th generation iPhone SE be released? A summary of the latest information including release date, design, camera, and more!
- You should leave your iPhone 15 behind and buy Magsafe related products as soon as possible! Here are three reasons why!
- A collection of recommended iPhone 15 cases!
- Actual images of iPhone cases released!
Related videos:
The above are the causes that affect wireless charging and the ideal Magsafe compatible iPhone case.
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