Price: $25.99
(as of Apr 03, 2024 08:34:30 UTC – Details)

Product Description




A1645_RC4A1645_RC4 Upgraded Protection with ActiveShield

ActiveShield safety system offers enhanced protection with a dynamic temperature sensor that actively monitors temperatures over a million times a day.


Model Number: A1645

Anker 621 Power Bank (Built-In Lightning Connector, 12W)

Unfold. Charge. Go Further.

Compact Design, Big Power

In addition to its compact and scratch-free portable design, the power bank also features a built-in Lightning connector that can be folded away when not in use.

Made for Your Apple Devices

You can trust the power bank to work safely and effectively with your Apple devices, thanks to its MFi certification.

Charge with Confidence

ActiveShield safety system features advanced temperature monitoring and power output control to help protect your device while it’s fast charging.


Use the Lightning port to charge an iPhone and the USB-C port to recharge the power bank. Please note that simultaneous charging and recharging are not supported.To ensure a stable connection, we recommend holding your phone while charging as the Lightning port is foldable.Not compatible with phone cases thicker than 0.19 in (4.9 mm), such as OtterBox defender cases.

Why is my power bank providing fewer charges than expected?

The capacity reduction during charging is due to a 30% to 45% energy loss in the battery cells and conversion circuitry. Therefore, a fully charged Anker Nano Power Bank offers an estimated 2,750mAh to 3,500mAh to power devices.

How can I estimate the number of charges for my device?

To estimate charging cycles, use this formula:

(Power Bank Capacity × 0.65) ÷ Device Battery Capacity ≈ Number of Charges.

For instance, charging a 3,000mAh device using a 5,000mAh power bank would offer approximately 1.08 charges.

Pocket-Sized Power: Equipped with a built-in Lightning connector, making it easy to charge your Apple devices without having to carry an extra cable.
12W Fast Charging: Power your device quickly and efficiently with the 12W output, so you’ll be up and running in no time.
MFi Certified: The power bank is made specifically for Apple devices like iPhones, iPads, and iPods—trust it to work safely and effectively with your devices.
The Ultimate Power Boost: Get up to 20 hours of additional video playtime for your iPhone 14 Pro Max with a 5,000mAh capacity—enough to keep you entertained for an entire journey.
What You Get: Anker 621 Power Bank (Built-In Lightning Connector, 12W), 1.9 ft (60 cm) USB-C to USB-C cable, welcome guide, worry-free 18-month warranty, and our friendly customer service.

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