ActiveShield safety system offers enhanced protection with a dynamic temperature sensor that actively monitors temperatures over a million times a day.
Purchase Tip
We offer two versions of this product: one with a Lightning connector and another with a USB-C connector. If you're using an iPhone 15 or 16, and purchased the Lightning version, no worries—just connect your device using a separate USB-C to USB-C cable from the power bank's USB-C port.
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.
Note1:Use the Lightning port to charge an iPhone14/13/12 and the USB-C port to recharge the power bank. Please note that simultaneous charging and recharging are not supported.
Note2:To ensure a stable connection, we recommend holding your phone while charging as the Lightning port is foldable.
Note3:Not compatible with phone cases thicker than 0.19 in (4.9 mm), such as OtterBox defender cases.
 Anker Lightning PowerBank |  Anker Nano Power Bank |  Anker Zolo Power Bank |  Anker Zolo Power Bank |  Anker MagGo Power Bank |  Anker 3-in-1 PowerBank |  Anker 3-in-1 PowerBank | |
|---|---|---|---|---|---|---|---|
Customer Reviews | — | — | — | — | — | — | — |
Price | — | — | — | — | — | — | — |
Main Feature | Built-in | Built-In | Wireless | Wireless | 10K 35W For Apple Watch | 3-in-1 Charger + Built-In | 3-in-1 Charger + Built-In |
Output Ports | Lightning*1+USB-C*1 | USB-C*2 | USB-C * 1 | USB-C * 2 | Built-in USB-C | Built-in C Cable + 1C | Built-in C Cable + 1C |
Recharging Time | ~2 Hours | ~2.4 Hours | / | / | / | ~3.5 Hours | ~2.83 Hours |
Size | 3.03 x 1.45 x 0.89 in | 3.03 x 1.45 x 0.89 in | 4.07 × 2.72 × 0.83 in | 4.15 × 2.72 × 0.81 in | 3.74 × 2.01 × 1.28 in | 4.25*1.97*1.22 in | 3.25*1.95*1.22 in |
Weight | 3.47 oz | 3.47oz | 7.87 oz | 8.46 oz | 8.64oz | 8.8oz | /7.04oz |
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.
ActiveShield safety system offers enhanced protection with a dynamic temperature sensor that actively monitors temperatures over a million times a day.
Purchase Tip
We offer two versions of this product: one with a Lightning connector and another with a USB-C connector. If you're using an iPhone 15 or 16, and purchased the Lightning version, no worries—just connect your device using a separate USB-C to USB-C cable from the power bank's USB-C port.
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.
Note1:Use the Lightning port to charge an iPhone14/13/12 and the USB-C port to recharge the power bank. Please note that simultaneous charging and recharging are not supported.
Note2:To ensure a stable connection, we recommend holding your phone while charging as the Lightning port is foldable.
Note3:Not compatible with phone cases thicker than 0.19 in (4.9 mm), such as OtterBox defender cases.
Anker Lightning PowerBank | Anker Nano Power Bank | Anker Zolo Power Bank | Anker Zolo Power Bank | Anker MagGo Power Bank | Anker 3-in-1 PowerBank | Anker 3-in-1 PowerBank |
|---|---|---|---|---|---|---|
| Customer Reviews | ||||||
| — | — | — | — | — | — | — |
| Price | ||||||
| — | — | — | — | — | — | — |
| Main Feature | ||||||
| Built-in | Built-In | Wireless | Wireless | 10K 35W For Apple Watch | 3-in-1 Charger + Built-In | 3-in-1 Charger + Built-In |
| Output Ports | ||||||
| Lightning*1+USB-C*1 | USB-C*2 | USB-C * 1 | USB-C * 2 | Built-in USB-C | Built-in C Cable + 1C | Built-in C Cable + 1C |
| Recharging Time | ||||||
| ~2 Hours | ~2.4 Hours | / | / | / | ~3.5 Hours | ~2.83 Hours |
| Size | ||||||
| 3.03 x 1.45 x 0.89 in | 3.03 x 1.45 x 0.89 in | 4.07 × 2.72 × 0.83 in | 4.15 × 2.72 × 0.81 in | 3.74 × 2.01 × 1.28 in | 4.25*1.97*1.22 in | 3.25*1.95*1.22 in |
| Weight | ||||||
| 3.47 oz | 3.47oz | 7.87 oz | 8.46 oz | 8.64oz | 8.8oz | /7.04oz |
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.
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