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Anker Nano Power Bank (10K, 45W, Built-In Retractable USB-C Cable), model A1638, is a compact, high-performance portable charger designed for fast charging on the go. It features a built-in retractable USB-C cable that eliminates the need to carry extra cords, making it ideal for travel, daily commutes, or emergencies.
Key Features and Specifications
- Capacity: 10,000mAh (rated around 37Wh, flight-approved for carry-on luggage).
- Output Power: Up to 45W max via the built-in retractable USB-C cable or the dedicated USB-C port (supports PD/PPS for fast charging compatible devices like iPhone 16/17 series, Samsung Galaxy, Google Pixel, iPads, and more). It can charge an iPhone 16 Pro to 50% in about 27 minutes or fully charge many phones 2–3 times.
- Ports:
- Built-in retractable USB-C cable (extends up to ~2.3 ft / 70cm, durable for over 20,000 bends/pulls).
- One additional USB-C port.
- One USB-A port (up to 22.5W max).
- Multi-Device Charging: When using multiple ports simultaneously, output is shared (e.g., max 22.5W total for two ports, or 7.5W each for all three).
- Input/Recharging: Up to 30W fast recharging (full charge in ~2 hours with a suitable charger) via the built-in cable or USB-C port.
- Additional Perks:
- Smart digital display showing real-time battery percentage and charging status.
- Pass-through charging support (charge devices while recharging the power bank).
- Compact and lightweight: ~3.21 × 1.99 × 1.42 inches (8.15 × 5.05 × 3.61 cm), weighs about 8.2 oz (231g)—16% smaller than many standard 10K power banks.
- Often includes a lanyard for easy carrying.
- Safety features like 24/7 battery protection.



