A MagSafe charger uses magnets to snap your phone into the right position for wireless charging
MagSafe is a charging system that combines magnets with wireless power transfer. Instead of plugging a cable into your phone, you hold the charger near the back of your device and it snaps into place magnetically. The magnets align the charging coil inside your phone with the charging coil in the charger, so power transfers wirelessly. Apple introduced MagSafe with the iPhone 12 in 2020, and other phone makers have since created their own magnetic charging systems.
The magnets serve one specific job: they position the charger correctly so the two coils line up. Without that alignment, wireless charging either does not work or works slowly. MagSafe chargers typically deliver 15 watts of power to an iPhone, compared to 5 to 10 watts from older wireless chargers that required you to place your phone in the exact right spot by hand.
Key Takeaways
- MagSafe uses magnets to snap a charger into place, which aligns the charging coils and makes wireless charging faster and more reliable than older methods.
- Apple's MagSafe works with iPhone 12 and newer models, and delivers 15 watts of power when you use an Apple charger or a certified third-party charger.
- You can still use older wireless chargers with MagSafe phones, but they will charge more slowly and you have to position the phone by hand.
- MagSafe chargers come as wall plugs, car mounts, battery packs, and charging stands, so you can choose the form that fits how you actually charge your phone.
- The magnets in MagSafe are strong enough to hold your phone but weak enough that they do not damage credit cards or other devices nearby.
How the magnets and charging coils work together
Inside a MagSafe charger are two things: a ring of magnets around the outside edge, and a charging coil in the center. Your phone has matching magnets embedded in the back and a charging coil aligned with them. When you bring the charger close to your phone, the magnets pull the charger and phone together and hold them in the exact position needed for the coils to transfer power.
The magnets are arranged in a specific pattern so they attract only when the charger is oriented the right way. You cannot accidentally snap the charger on backwards or at an angle. This automatic alignment is what makes MagSafe faster than older wireless chargers, where you had to center your phone by eye and it would slow down or stop charging if you moved it even slightly.
Which phones and chargers support MagSafe
Apple's MagSafe works with iPhone 12, iPhone 13, iPhone 14, iPhone 15, and all newer models. It does not work with iPhone 11 or earlier. If you have an older iPhone, you can still use a regular wireless charger, but it will not have the magnetic snap-on feature.
MagSafe chargers come from Apple and from third-party makers like Anker, Belkin, and others. Not all third-party chargers deliver the full 15 watts — some deliver 7.5 watts or less. Check the wattage when you buy so you know how fast it will charge. Some third-party chargers are also certified by Apple, which means Apple has tested them and confirmed they work safely with MagSafe phones.
Android phones from Samsung, Google, and others have started using magnetic charging systems too, but they are not compatible with Apple's MagSafe. A Samsung MagSafe charger will not work with an iPhone, and vice versa. Each system uses its own magnet pattern and charging standard.
MagSafe chargers in different forms
MagSafe chargers are not just wall plugs. You can buy them as car mounts that stick to your dashboard or air vent, as battery packs that charge your phone while you carry them, as charging stands that prop your phone up while it charges, and as puck-shaped chargers you lay flat on a desk. Some chargers combine MagSafe with other features — for example, a charging stand might have a MagSafe ring on top and a spot for your Apple Watch below it.
The form you choose depends on where and how you charge. If you charge mostly at your desk, a stand keeps your phone visible and at eye level. If you charge in your car, a mount holds your phone in place for navigation. If you travel, a battery pack lets you charge on the go. All of them use the same magnetic connection, so any MagSafe charger works with any compatible phone.
How fast MagSafe charges compared to other methods
A MagSafe charger delivers 15 watts of wireless power to an iPhone when you use an Apple charger or a certified third-party charger. That is faster than older wireless chargers, which typically delivered 5 to 10 watts. However, it is slower than wired charging — a wired charger can deliver 20 to 30 watts or more, depending on the iPhone model and the charger you use.
The difference in real time is noticeable. With a 15-watt MagSafe charger, an iPhone 15 takes roughly 2 to 3 hours to charge from empty to full. With a 20-watt wired charger, the same phone charges in about 1.5 to 2 hours. If you charge overnight or while you work, the difference does not matter much. If you need your phone charged quickly, wired charging is still faster.
Whether MagSafe damages cards or other devices
The magnets in MagSafe are strong enough to hold your phone but weak enough that they do not erase credit cards, hotel key cards, or other magnetic-stripe cards. Apple has tested MagSafe chargers and confirmed they meet safety standards for magnetic exposure. You can safely carry a MagSafe charger in your pocket or bag next to your wallet.
However, if you have a medical device like a pacemaker or insulin pump, check with your doctor or device manufacturer before using MagSafe. Some medical devices are sensitive to magnets, and you may need to keep MagSafe chargers at a safe distance. This is a precaution specific to medical devices, not a general safety issue.
Using a MagSafe charger with an older wireless charger
If you have a MagSafe phone but only an older wireless charger, your phone will still charge. The charging coil in a MagSafe phone is compatible with regular wireless charging. However, you lose the benefits of MagSafe: the charger will not snap into place, you have to position your phone by hand, and charging will be slower because the coils may not align perfectly.
You can also add a MagSafe ring to an older phone that does not have built-in MagSafe. These are thin metal rings that stick to the back of your phone and attach to a MagSafe charger. They work, but they add thickness to your phone and may interfere with some phone cases. Most people find it simpler to just use a regular wireless charger if their phone does not have MagSafe built in.
Frequently Asked Questions
Can I use a MagSafe charger with a phone case on?
Yes. MagSafe works through most phone cases, including leather, silicone, and plastic cases. The magnets are strong enough to pull through a typical case thickness. However, very thick cases or cases with metal components may interfere with the connection. If your phone does not snap to the charger, try removing the case to see if that fixes it.
Do I need to buy an Apple charger or can I use a third-party one?
Third-party chargers work fine as long as they are certified or clearly state they deliver 15 watts of MagSafe power. Uncertified chargers may deliver less power or charge more slowly. If you are not sure, check the product description or ask the seller before you buy.
Will MagSafe chargers work with future iPhone models?
Apple has used MagSafe since iPhone 12 and has not announced plans to change it. However, Apple could redesign or replace MagSafe in future models. If you buy a MagSafe charger now, it will work with your current phone and likely with the next few iPhone models, but there is no may provide it will work forever.
Is MagSafe charging bad for my battery?
No. Wireless charging, including MagSafe, does not damage your battery any more than wired charging does. Your phone manages the charging speed automatically to protect the battery. You can leave your phone on a MagSafe charger overnight without harming it.
Can I charge two devices at once with MagSafe?
Some MagSafe chargers are designed to charge multiple devices — for example, a charging stand with a MagSafe ring for your phone and a separate coil for your Apple Watch. A basic MagSafe puck charges only your phone. Check the product description to see how many devices a charger supports.