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 A1610 Battery (PowerCore 5K) offers an estimated 2,750mAh~3,250mAh to power devices.

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

To estimate charging cycles, use these formula:

Why does charging stop at 80%?

Your iPhone may automatically stop charging at 80% to protect its battery from overheating, as part of iOS 17's thermal management strategy. Charging will resume once the device cools down. Moving it to a cooler spot can help speed up this process.

Why is my phone overheating?

It's normal for the power bank to reach temperatures between 98-118°F when the ambient temperature is 77°F. Rest assured, this device meets international safety standards for safe operation.

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Anker Power Bank, 621 Magnetic Battery (MagGo), 5000mAh Magnetic Wireless Portable Charger with USB-C Cable, Only Compatible with iPhone 16/16 Plus/16 Pro/16 Pro Max, iPhone 15/14/13/12 Series

Anker Power Bank, 621 Magnetic Battery (MagGo), 5000mAh Magnetic Wireless Portable Charger with USB-C Cable, Only Compatible with iPhone 16/16 Plus/16 Pro/16 Pro Max, iPhone 15/14/13/12 Series

Product ID: 491240719

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Details

Connector type
USB Type C
Brand
Anker
Battery capacity
5000 Milliamp
Colour
Green
Special feature
Magnetic

⚡Fast, reliable wireless charging

🔋5000mAh high-capacity power

🧲Ultra-strong magnetic attachment

Description

🧲 Snap. Charge. Go. Power that sticks with you.

ECO CONSCIOUS CHARGE - ClimatePartner certified, combining power with sustainability for the mindful professional.
SEAMLESS COMPATIBILITY - Optimized exclusively for iPhone 12 through 16 series for flawless wireless charging.
MAGNETIC SNAP PRECISION - Ultra-strong magnets ensure perfect alignment—no more frustrating disconnections.
POCKET SIZED POWERHOUSE - Slim, lightweight design fits seamlessly with your iPhone for on-the-go charging.
MINI CELL TECH EFFICIENCY - Advanced tech delivers full power with fewer components, making it smaller than ever.

The Anker 621 Magnetic Battery (MagGo) is a compact 5000mAh wireless charger designed exclusively for iPhone 12 to 16 series. Featuring Anker’s MiniCell technology and ultra-strong magnets, it offers fast, reliable charging with perfect alignment in a sleek, pocket-friendly form factor. ClimatePartner certified, it blends cutting-edge tech with eco-conscious design.

Specifications

Unit Count	1.0 Count
Item Dimensions L x W x Thickness	4.13"L x 2.62"W x 0.45"Th
Item Weight	0.31 Pounds
Battery Cell Type	Lithium Polymer
Color	green
Warranty Type	Limited
Recommended Uses For Product	Outdoor
Charging Time	2 Hours
Compatible Devices	iPhone 16/ 15/15 Plus/15 Pro/15 Pro Max/14/14 pro/13 Series, iPad, Samsung
Portable	Yes
Voltage	5 Volts
Power Source	Battery
Connector Type Used on Cable	USB Type C
Battery Capacity	5000 Milliamp Hours
Additional Features	Wireless Charging

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Great price for an authentic product. Fast international shipping too!

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

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Anker Power Bank, 621 Magnetic Battery (MagGo), 5000mAh Magnetic Wireless Portable Charger with USB-C Cable, Only Compatible with iPhone 16/16 Plus/16 Pro/16 Pro Max, iPhone 15/14/13/12 Series

Details

Description

Specifications

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