Yes—if you have an iPhone 15 or later. Connect an Apple Watch magnetic charging cable with a USB-C connector directly to the iPhone, then attach the watch to the magnetic charging puck. Apple says compatible iPhones can provide up to 4.5 watts to an Apple Watch, making this a useful emergency option—not a replacement for a wall charger.
What you need
- An iPhone 15 or later with a USB-C port
- An Apple Watch
- An Apple Watch Magnetic Fast Charger to USB-C Cable, preferably Apple-made or Made for Apple Watch certified
- Enough battery remaining on the iPhone to share power
Apple documents this method in its iPhone USB-C charging guidance.
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How to charge the Apple Watch from an iPhone
- Remove the Apple Watch from your wrist.
- Plug the USB-C end of the Apple Watch magnetic charging cable into the iPhone’s USB-C port.
- Place the back of the Apple Watch against the magnetic charging puck.
- Allow the puck to center and snap into position.
- Wait for the charging symbol to appear on the watch.
You can press the Apple Watch side button to check its battery percentage. If the watch is paired and connected, its battery level may also appear in the iPhone’s Batteries widget. Apple’s normal charging instructions cover the correct alignment and charging icon in more detail here.
Which iPhones support this?
| iPhone | Directly supported by Apple’s documented method? |
|---|---|
| iPhone 15 and later | Yes, through USB-C |
| iPhone 14 and earlier | No direct documented method through the phone’s Lightning port |
The important cutoff is the USB-C generation. An iPhone that can charge normally is not necessarily able to charge an Apple Watch. Apple’s documented method applies to iPhone 15 and later.
#1 Best Overall
- Compatible with all Apple Watch: Our wireless charger is compatible with iWatch series 12 11 10 9 8 7 6 SE3 SE2 SE 5 4 3 2 1 Ultra4 Ultra3 Ultra2 including 38 mm 40 mm 41 mm 42 mm 44 mm 45 mm 49mm Version. Also compatible with Airpods 4 AirPods Pro 3 AirPods Pro 2
- Efficient Smart Charging: Our watch charger provides safe charging mode, it takes 2 hours to fully charge your S12-S4. Please note: Charging Ultra 4 3 2 1 will take less than 4 hours. We suggest that you purchase our store's 5W fast charging version for your Ultra series
- Multiple Protection: Built-in advanced chip with over-current, over-voltage, short-circuit, over-charge and over-temperature protection and other safety features. Protect your watch battery against damage
- Strong Magnetic Adsorption: The Watch Charger with built-in magnet has strong adsorption perfectly snaps and centers to the charging coil on the back of your watch, stable and will not fall off, resulting in a wonderful charging experience
- Travel Essentials: This 3.3FT 1M Watch charging cable is portable to carry around, especially for traveling and is suitable as a backup charger for your watch
Which cable works?
Best option: USB-C Apple Watch charging cable
The Apple Watch Magnetic Fast Charger to USB-C Cable has the required magnetic charging puck on one end and a USB-C plug on the other. It connects directly to an iPhone 15 or later and can also be used with a USB-C wall adapter, laptop, vehicle port, or power bank.
Older USB-A charging cable
If your Apple Watch cable has a USB-A connector, it cannot plug directly into an iPhone 15 or later. Apple says a standard Apple Watch Magnetic Charging Cable can be connected using an appropriate Apple USB-C to USB Adapter. This works as an adapter-based fallback, but a native USB-C watch cable is simpler and more compact.
Rank #2
- 【Safe and Fast Wireless Watch Charging】- Our wireless charger provides a safer and faster charging mode,for a more convenient charging experience,Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
- 【Wide Compatible】- Our wireless batteries charger is compatible with iWatch series Ultra2/Ultra/12/11/10/9/8/7/6/SE2/SE/5/4/3/2 (including the 38 mm/40 mm/41 mm/42 mm/44 mm/45 mm Version).Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
- 【Portable design】- This 3.3Ft charging cable for apple watch is convenient to carry around, especially for traveling，and is suitable as a backup charger for your watch.Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
- 【Advanced Safety】- Built-in protection device with safety functions such as overcurrent,overvoltage,short circuit and overtemperature protection. Protect your watch battery from overcharging damage.pls note:this is support usb c port,so pls use a usb c PD adapter,and 20w-30w is the best to use.Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
- 【12-Month Quality Assurance 】- As a responsible brand seller, you will receive xiwxi's 12-month Quality assurance and friendly customer service.Please take off the watch case and use a 5V/1A adapter or original adapter（ETL/UL Certified）.
A normal USB-C cable
The USB-C cable included with an iPhone cannot charge an Apple Watch by itself. It has no magnetic Apple Watch charging puck. You need a complete Apple Watch charging cable or a compatible certified charger.
Recommended Free Tools
Apple recommends an Apple-made charger or a third-party charger with Made for Apple Watch certification. Certification does not guarantee identical speed or build quality, but it is preferable to a generic magnetic charger with unclear specifications. See Apple’s charger guidance.
Rank #3
- ⚡【Compatible with Apple Watch Series】:The Apple Watch Charger Cable is compatible with Apple Watch Series 9, Series 8, Series7, Series SE, Series 6, Series 5, Series 4, Series 3, Series 2, Series 1, and compatible with Apple Watch Ultra, Apple Watch Sports, Apple Watch Herm~s and Apple Watch Edition. It can support all watch sizes, including all 38mm, 40mm, 41mm, 42mm, 44mm and 45mm versions.
- ⚡【USB C Fast Charger】 Our Apple watch charger comes with USB C charger adapter, up to 3X faster than the 5W original charger speed. To get better experience, your Apple watch charger series 7 is fully charged in about 2 hours and the phone is fully charged in about 2.5 hours.
- ⚡【6.6FT/2M Apple Watch Charger Cable】: This 6.6foot/2M Apple Watch Charger magnetic iwatch charging cable has a built-in magnetic charging module, which can easily identify your watch, with shock absorption and high temperature resistance.You can freely adjust the angle of the watch while charging.To avoid overheating,We recommend charging your watch without a case.
- ⚡【Safe Apple Watch Charger】: Our iwatch charger with the original MFi chip and integrated magnetic technology,ensures 100% original charging speed for your Apple devices.This Apple Watch charger cable is made of high quality ABS+PC and pure copper wire, the cable has been tested for 10000+ times of bending to avoid shortened lifespan due to aging and usage.
- ⚡【What You Will Get】 : Our package includes a Apple Watch Charger USB C/Type C Fast Charger Block and a 6.6ft Apple Watch charger Cable. If you have any question about the Apple Watch Charger, please feel free to contact us.
How fast will it charge?
Apple specifies up to 4.5 watts when an iPhone 15 or later charges an Apple Watch or another small USB Power Delivery device. That is a maximum power-delivery figure, not a guaranteed charging speed or a promise of a particular time to full.
Actual performance depends on the Apple Watch model, its battery level, the cable, the iPhone’s remaining battery, temperature, and how heavily the iPhone is being used. The phone may also limit output in some conditions.
Rank #4
- 【Wide Compatible】- Our wireless charger is compatible with iWatch series Ultra/10/9/8/7/6/SE2/SE/5/4/3/2/1 (including the 38 mm/40 mm/41 mm/42 mm/44 mm/45 mm Version)
- 【Portable design】-This 1.0M iWatch charging cable is convenient to carry around, especially for traveling，and is suitable as a backup charger for your watch.
- 【Advanced Safe & Rapid Charging】– Experience enhanced safety and speed with our wireless watch charger, delivering a 0% to 100% charge in under 3 hours.
- 【Smart Protection】 - Equipped with advanced safety mechanisms including over-current, over-voltage, short-circuit, and over-temperature protection. Automatically adjusts charging power to prevent overheating and overcharging, ensuring your premium watch battery remains healthy and extends its lifespan. Certified for safe, worry-free wireless charging day and night.
- 【12-Month Quality Assurance 】- As a responsible brand seller, you will receive xiwxi's 12-month Quality assurance and lifetime friendly customer service.
Do not assume that Apple’s published fast-charging times apply when the power source is an iPhone. Apple’s approximate 0–80% figures are based on a suitable USB-C power adapter and compatible charging equipment. For example, Apple lists approximately 30 minutes for Series 10 and later, approximately 45 minutes for Series 7, 8, and 9 and Apple Watch SE 3, approximately one hour for Apple Watch Ultra and Ultra 2, and approximately 45 minutes for Apple Watch Ultra 3. These are Apple’s adapter-based test figures, not guaranteed iPhone-powered results.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteIf the Apple Watch does not charge
- Reconnect everything. Unplug the cable from the iPhone and connect it again firmly.
- Confirm compatibility. Check that the phone is an iPhone 15 or later, not an iPhone 14 or older.
- Center the puck. The watch’s back should sit flat against the magnetic charger.
- Clean the contact surfaces. Remove dirt, moisture, or debris from the watch back and puck.
- Remove obstructions. Take off a case or accessory that prevents proper contact.
- Use a suitable charger. Try an Apple or Made for Apple Watch-certified cable.
- Check the iPhone battery. A nearly depleted iPhone may not have enough power to share.
- Wait briefly. A deeply discharged watch may take a little time before displaying its normal charging screen.
- Control temperature. Let the iPhone and watch return to a normal temperature if either device is unusually hot or cold.
What if the iPhone starts charging instead?
Check the cable arrangement and use the direct Apple Watch magnetic charging cable, with its USB-C end connected to the iPhone. A generic USB-C cable cannot attach to the watch, and an incorrectly recognized accessory may produce unexpected behavior.
Best Value
- Durable, woven cable with fast-charging capabilities for select Apple Watch models. Simply hold the connector near the back of the watch, where magnets cause it to snap into place automatically.
- Supports fast charging on Apple Watch Series 7 and later and Apple Watch Ultra models. Supports regular charge times on all other models.
- Compatible with all Apple Watch
- USB-C Cable Length: 1m or 3.2 feet
Is this wireless reverse charging?
No. The watch attaches to the puck magnetically, but power travels from the iPhone to the charger through a wired USB-C connection. Apple’s current documented instructions do not describe charging an Apple Watch by placing it on the back of an iPhone.
Should you use an iPhone or another power source?
- Use the iPhone when the watch is nearly dead, you have no outlet, and you only need enough charge for navigation, a workout, payments, or the rest of a trip.
- Use a wall adapter for the fastest and most predictable charging, especially overnight or when the iPhone is also low.
- Use a power bank if you travel frequently or want to preserve the iPhone’s battery while charging multiple devices.
- Use a laptop or vehicle USB-C port when those are available and a wall outlet is not.
- Use a multi-device travel charger when convenience matters more than emergency charging. Apple’s MagSafe Duo Charger can charge a compatible iPhone or AirPods and an Apple Watch simultaneously when connected to a suitable power adapter, but it is not an iPhone-powered charging mat.
Important limitations
Charging the watch consumes the iPhone’s battery. If the iPhone is your only means of contacting emergency services, navigating, or receiving important messages, preserving its battery may be more valuable than topping up the watch. The iPhone method is best treated as a backup.
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