The Anker Nano Charger (45W, Smart Display, 180° Foldable, model A121D) is a single USB-C wall charger with a small screen that reports charging wattage in real time. On certain iPhone and iPad models it also shows the device model and battery percentage. The charger does not include a cable, and its 45W rating is a ceiling: the connected device decides how much power it actually draws.
This is a specification-based read. It draws on Anker’s published product pages for the US, EU and UK, plus the battery-care and temperature figures Anker publishes from its own testing. No independent hands-on testing is included.
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What the screen actually tells you
Anker says the screen “shows real-time charging wattage.” That number is the power flowing to the device at that moment. It is not a guarantee of the fastest speed the phone can accept. Anker says lower displayed wattage is normal, and that output can fall as the battery fills or as temperature and usage change.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →The device-specific readout is narrower. Anker says the charger identifies the model and battery percentage only for the devices listed below. Compatibility wording is set by the manufacturer and can change, so check Anker’s current product page for the up-to-date device list before buying.
#1 Best Overall
- The Only Charger You Need: Say goodbye to your old power bricks. Anker 715 Charger (Nano II 65W) has the power you need to fast charge your phone, tablet, and USB-C notebook from a single tiny charger.
- High-Speed Charging: Charge a 2020 MacBook Air in less than 2 hours, a MacBook Pro 13ʺ at full speed, an iPhone 13 up to 3× faster than with an original 5W charger, and charge the latest Samsung phones at full speed with Samsung Super Fast Charging.
- Downsized Design: At 58% smaller than an original 61W USB-C charger, and with a foldable plug, Anker Nano II takes up less space while giving you just as much power.
- Powered by GaN II Technology: With a 100% increase in operating frequency, an innovative stacked design, and an upgraded circuit board structure, GaN II technology makes our latest charger smaller without sacrificing a drop of power.
- What You Get: Anker 715 Charger (Nano II 65W) / Anker Nano II 65W, welcome guide, our worry-free 18-month warranty, and friendly customer service (cable not included).
| Device | Model and battery percentage shown on the charger |
|---|---|
| iPhone 15, 16 and 17 series (models Anker lists) | Yes |
| iPhone 17e | No; Anker notes it as an exclusion |
| iPad (10th generation or later) | Yes |
| Samsung and Google Pixel phones | No; Anker says these charge normally but do not receive the recognition display feature |
In practice, a Galaxy or Pixel owner gets the charging power but not the device readout.
Power specifications and what the numbers mean
| Attribute | Anker’s stated value (US listing unless noted) |
|---|---|
| USB-C ports | One |
| Maximum total output | 45W |
| USB Power Delivery | Up to 45W |
| PPS | Up to 3A; 5A PPS not supported |
| Input | 100–240V AC, 50/60Hz, up to 1.5A |
| Output profiles | 5V/3A, 9V/3A, 15V/3A, or 20V/2.25A |
| Dimensions | 1.34 × 1.40 × 1.57 in (34 × 35.5 × 40 mm) |
| Weight | 2.65 oz (75 g) |
The output profiles explain the wattage a phone can see. Multiplying voltage by current gives 15W at 5V/3A, 27W at 9V/3A, 45W at 15V/3A, and 45W at 20V/2.25A. A phone that negotiates the 9V profile therefore draws at most 27W from this charger, even though the unit is rated for 45W.
Rank #2
- Power Your MacBook at True 70W Speed: Each USB-C port delivers 70W max of power—enough to charge a 14-inch MacBook Pro (2024) from 0 to 50% in 35 minutes. Compared to a standard 65W charger, it offers faster performance and better compatibility with the latest M4 models.
- Mini Size and Travel-Friendly: At just 2.09 × 1.68 × 1.24 inches, the charger is 41% smaller than a standard 70W USB-C charger—making it effortlessly portable. Slip it into a pocket, handbag, or travel pouch without taking up valuable space, so you can stay powered up wherever you go.
- Fast Charging That Stays Cool: With TÜV Rheinland certification and ActiveShield 4.0 thermal monitoring, surface temperatures measure up to 50°F (10°C) lower than international safety benchmarks for charging devices.
- Elegance in Every Charge: A textured shell, glossy finish, and premium metal frame create a clean, modern look that blends seamlessly with your workspace or travel setup.
- What You Get: Anker Nano Charger (70W, 3 Ports), 4.9 ft USB-C to USB-C Cable, welcome guide, 18-month warranty, and our friendly customer service.
Dimensions and weight come from Anker’s US listing. Regional versions may differ, so check the listing for your market.
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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 minutePhone-specific limits
- Anker says certain Galaxy models are limited to 27W.
- Anker says the Galaxy S25 series supports full-speed fast charging with this charger.
- Anker says output is set by the connected device, so an iPhone or Galaxy with a lower charging ceiling will simply draw less than 45W.
Cable: not included
The box does not contain a cable. Anker identifies the connectors you need as USB-C to USB-C for USB-C devices and USB-C to Lightning for older iPhones. Choose a cable with the connector your device uses, and check that the cable’s rating supports the wattage you expect. A cable rated below the charger’s output will cap the speed regardless of the charger.
Rank #3
- Ultra-Compact USB C Charger: Experience the power of GaN technology with this 30W Anker 5Charger (Nano 3), delivering 70% smaller size than original chargers while maintaining high-speed charging for devices like iPhone 15/Pro/Pro Max/Pro/Pro Max, Galaxy, and iPad.
- Versatile USB C Charging Solution: Designed for various devices, this USB C charger can power up earbuds, phones, tablets, and even MacBook Air, making it a must-have accessory for all your charging needs.
- Fast and Efficient Charging: With 30W output, this USB C charger provides full-speed charging for iPhone Pro and Pro Max, charges iPad Air (5th Generation) to 50% in just 45 minutes, and supports Samsung Super Fast Charging (25W) for a seamless charging experience.
- Advanced Safety Features: Equipped with ActiveShield 2.0 technology, this USB C charger intelligently monitors temperature over 3 million times per day, offering twice the protection of ActiveShield 1.0 and ensuring the safety of your devices during charging.
- Comprehensive Package: The Anker 511 Charger (Nano 3, 30W) comes with a welcome guide, a worry-free 24-month warranty, and friendly customer service (cable not included), making it a reliable and convenient choice for all your USB C charging needs.
Care Mode and temperature claims
Anker advertises a Care Mode and temperature differences based on its own testing. The UK product page states up to 20°C cooler charger temperature and up to 5°C lower phone internal battery temperature in Care Mode. These are manufacturer figures. No independent thermal or battery-life result for the A121D is available, so treat them as Anker’s measurements, not as results you should expect in everyday use.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Size against a standard 30W charger
Anker’s EU product page says the unit is 47% smaller and 20% lighter than a standard 30W charger. That is a comparative claim. The page does not establish the reference charger’s exact dimensions or the full comparison method, so the percentages are useful as a direction rather than a precise measurement.
Quick Recap
Best Value
- Charge 2 Devices at Once: With 27W from one USB-C port, and 20W from the other, you can fast charge your iPhone and your iPad at the same time.
- High-Speed Charging: Utilize either USB-C port to provide up to 47W of power to charge a MacBook Air or other USB-C notebooks at impressive speeds, perfect for on-the-go professionals and students.
- Advanced Safety with ActiveShield 2.0: Anker's proprietary technology intelligently monitors temperature over 3 million times per day, providing twice the protection of ActiveShield 1.0 and ensuring the longevity of your devices.
- Compact and Powerful: Experience 47W of power in a charger that's roughly the same size as an original 20W charger, making it an ideal travel companion without sacrificing performance.
- Comprehensive Package: Receive the Anker 523 Charger (Nano 3, 47W), a welcome guide, an 18-month worry-free warranty, and friendly customer service (note: charging cable not included).
Rank #4
- Smart iPhone Recognition with Care Mode: Automatically recognizes supported iPhone models and adjusts charging for smarter, safer power delivery. Compatible only with iPhone 17 / 16 / 15 series, 11" iPad Pro (2024 / 2023 / 2021 / 2020), 12.9" iPad Pro (2022 / 2021 / 2020), and 13" iPad Pro (2024).Excluding iPhone 17e.
- 45W Max Fast Charging with Smart Power Adjustment: Delivers up to 45W of high-speed charging while adjusting output based on your battery level. Charge iPhone 17 Pro to 50% in just 20 minutes. (Note: Data based on internal lab testing. Actual performance may vary depending on usage conditions.)
- Smart Display Controls: Tap once to view real-time charging status, double-tap to switch between modes, and press for 2 seconds to rotate the screen. The display automatically turns off after a certain period of time. For more details, scan the QR code to view the user manual.
- Extends Battery Life: TÜV-certified Care Mode lowers charging temperature by up to 9°F compared to standard 45W chargers—ideal for overnight charging.
- Pocket-Sized with Dual Foldable Prongs: Approximately 47% smaller and 36% lighter than the original 30W charger. Features both 90° and 180° foldable prongs for easy use in tight spaces.
Who this charger suits
- Good fit: you want a single-port, compact 45W charger and you value seeing live output wattage, and your iPhone or iPad is on Anker’s recognition list.
- Weaker fit: you own a Samsung or Pixel phone and want the battery-percentage readout, or you expect a cable in the box.
- Wrong shape: you need to charge several devices at once, since this is a single-port unit.
- Check first: if you own a Galaxy, confirm your model against Anker’s 27W note, because the charger will not exceed that model’s ceiling.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
