Anker A1638 Nano Power Bank, 10,000mAh 45W with Retractable USB-C Cable
Product description
If you need a portable way to top up a phone while away from an outlet, the Anker Nano Power Bank combines a 10,000mAh capacity with a built-in retractable USB-C cable.
Its 45W maximum single-port output supports fast charging for compatible devices, while a smart display gives you a readout as you use the power bank.
The compact design and integrated cable make it easy to carry for commutes, travel, and everyday errands without packing a separate charging cable.
Fit and sizing
Measuring 3.21 × 1.99 × 1.42 inches, this black power bank is made for a bag, backpack, or pocket where a larger-format charger may be less convenient. The retractable cable pulls out when you need to connect a device and tucks away again for storage, helping keep your carry setup neat.
Choose it for portable phone charging with a cable built into the unit. Its listed compatible devices include the iPhone 17, 16, and 15 series, as well as smartphones, the product listing also names iPad, Galaxy, and Pixel devices. Charging speed depends on the connected device and its charging capabilities.
Benefits
The built-in USB-C cable is ready for a compatible device without needing to bring a separate cable. For charging another way, the power bank also has USB-C and USB-A connections. A single USB-C output can deliver up to 45W, and the 30W maximum input supports replenishing the power bank. Pass-through charging lets you charge a device while the power bank itself is being recharged.
A smart display makes charging status easier to check, and Anker’s ActiveShield protection and 24/7 battery protection are designed to support safer charging. The retractable cable is described as tested for more than 20,000 bends, a useful detail for a cable intended for frequent carry and use.
Buyers often highlight the compact size, portability, and convenience of the built-in cable. Feedback on battery life and perceived weight is mixed, so individual impressions vary. The 10,000mAh rating describes battery capacity, energy conversion means the usable power delivered to a device is lower.
Product specs
- Type: Portable power bank
- Capacity: 10,000mAh
- Maximum output: 45W from one port
- Maximum input: 30W
- Connections: Built-in USB-C cable, USB-C port, and USB-A port
- Dimensions: 3.21 × 1.99 × 1.42 inches
- Color: Black
- Model: A1638
Questions before you buy
Can it charge more than one device at a time? Yes. When using two ports, the maximum output is 15W, with three ports in use, output is limited to 7.5W per port. The available charging speed also depends on the connected devices.
Can it charge a laptop? Anker recommends this power bank for phones and other portable devices rather than laptop charging. Its capacity and heat during high-power output make it unsuitable for sustained 45W laptop charging.
Can you charge a device while recharging the power bank? Yes. Pass-through technology supports charging a connected device while the power bank is plugged in for recharging.
Should you buy it?
This power bank is a practical fit for people who want portable phone charging without carrying a separate USB-C cable. Its compact dimensions, retractable lead, and 45W maximum single-port output suit everyday carry and travel, especially when a quick, organized phone top-up matters more than choosing a larger-format charger.