1. Introduction
The Anker Nano Power Bank (Model A1665) is an ultra-slim, Qi2 certified portable charger designed for magnetic wireless charging. With a 5,000mAh capacity, it provides reliable power for your compatible devices, including iPhone Air, iPhone 17, and iPhone 16 series. Its ergonomic design and advanced safety features ensure efficient and secure charging on the go.

Figure 1: Anker Nano Power Bank (A1665) attached to a smartphone.
2. Package Contents
Ensure all items are present in the package:
- Anker Nano Power Bank (5K, MagGo, Slim)
- USB-C to USB-C charging cable
- Welcome Guide
3. Setup
3.1 Charging the Power Bank
Before initial use, fully charge your Anker Nano Power Bank. Connect the provided USB-C to USB-C cable to the power bank's USB-C port and to a compatible wall charger (not included). The LED indicators on the power bank will show the charging status.

Figure 2: Charging the Anker Nano Power Bank (A1665) using a USB-C cable.
3.2 Attaching to a Device
For magnetic wireless charging, ensure your device is MagSafe-compatible. Simply align the power bank with the back of your device. The strong magnetic hold will secure it in place, and charging will begin automatically.

Figure 3: Magnetic attachment and wireless charging initiation.
4. Operating Instructions
4.1 Wireless Charging
The Anker Nano Power Bank supports 15W Max Qi2-certified fast wireless charging. Once magnetically attached to a compatible device, charging will commence. For optimal performance, ensure no cases thicker than 2.5 mm are used, as this may interfere with the magnetic connection and charging efficiency.

Figure 4: Fast wireless charging capabilities.
4.2 Wired Charging
The power bank features a USB-C port that provides up to 20W Max output for wired charging. Use the provided USB-C to USB-C cable to connect your device to the power bank for faster charging. This port can also be used to charge the power bank itself.

Figure 5: Wired charging and recharging scenarios.
4.3 Battery Level Indicators
The power bank is equipped with LED indicators to display the remaining battery level. Press the small button on the side of the power bank to activate the indicators.
4.4 Ergonomic Design and Portability
At just 0.3 inches thin and weighing 3.84 ounces, the Anker Nano Power Bank is designed for ultra-portability. Its curved edges and skin-friendly back panel ensure a comfortable grip, making it ideal for daily carry.

Figure 6: Slim profile and lightweight design of the power bank.
5. Maintenance
To ensure the longevity and optimal performance of your Anker Nano Power Bank, follow these maintenance guidelines:
- Store in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid dropping or subjecting the power bank to strong impacts.
- Clean the surface with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Do not disassemble or attempt to repair the device yourself.
6. Troubleshooting
6.1 Charging Stops at 80%?
Your iPhone may stop charging at 80% to protect the battery. This can happen if it gets too warm during charging as part of iOS 17's thermal control strategy. Charging will resume once the device cools down. Moving your iPhone to a cooler area may help.

Figure 7: iPhone notification regarding charging stopping at 80%.
6.2 Device Not Charging
- Ensure the power bank is sufficiently charged.
- Verify that the USB-C cable is securely connected to both the power bank and your device.
- For wireless charging, ensure proper alignment of the power bank with your device's MagSafe area.
- Remove any thick cases that might obstruct the magnetic connection or wireless charging.
6.3 Overheating Concerns
The Anker Nano Power Bank is designed with graphene cooling, dual NTC chips, and smart heat control to keep the device below 104°F (40°C), which is 14 degrees cooler than the industry standard. If you experience excessive heat, discontinue use and allow the device to cool down.

Figure 8: Advanced temperature control features.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | A1665 |
| Battery Capacity | 5000 Milliamp Hours |
| Wireless Charging Output | 15W Max (Qi2 Certified) |
| USB-C Output | 20W Max |
| Product Dimensions | 4.02 x 2.77 x 0.33 inches |
| Item Weight | 3.84 ounces |
| Special Features | Wireless Charging, Magnetic Attachment, Temperature Protection |
8. Warranty and Support
The Anker Nano Power Bank (Model A1665) comes with a 24-month warranty. For customer service and support, please refer to the contact information provided in your Welcome Guide or visit the official Anker website.







