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 (Power Bank Capacity × 0.5) ÷ Device Battery Capacity ≈ Number of Charges. For instance, charging a 3,000mAh device using a 5,000mAh Wireless power bank would offer approximately 0.83 charges.

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.

Why is wireless charging slower than wired charging?

Wireless charging uses coil coupling technology, which is less efficient under the same power conditions. For faster charging, use a wired connection. To improve wireless charging speeds, minimize phone usage and close high-power apps while charging.

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621 Magnetic Portable Charger (MagGo), 5,000mAh Wireless Power Bank with USB-C Cable, Magsafe-Compatible Battery Pack for iPhone 16/15/14/13/12 Series

Product ID: 464158830

Details

Battery Capacity
5000 Milliamp
Brand
Anker
Color
Black
Connector Type
USB Type C
Special Feature
Wireless

⚡2.5-hour fast USB-C recharge

🔋5,000mAh compact power

🧲Ultra-strong magnetic snap

$73.20

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Snap, Charge, Go — Power that sticks with you!

SAFE RELIABLE - Operates within international safety standards even under extended use.
FAST USB C RECHARGE - Recharges fully in just 2.5 hours, so you’re never left powerless.
POCKET SIZED POWERHOUSE - Fits effortlessly in your bag or pocket without weighing you down.
MAGNETIC SNAP ON CONVENIENCE - Securely attaches to your iPhone 12-16 series for seamless wireless charging on the go.
MINI CELL TECH MAXIMUM EFFICIENCY - Smaller, lighter design with no compromise on charging performance.

The Anker 621 Magnetic Portable Charger (MagGo) is a sleek, lightweight 5,000mAh wireless power bank designed for iPhone 12 through 16 series. Featuring ultra-strong magnets for secure attachment, fast 2.5-hour USB-C recharge, and Anker’s MiniCell technology, it delivers reliable, on-the-go power in a pocket-sized form factor with international safety certifications.

Specifications

ASIN	B099284SRR
Antenna Location	Outdoor
Battery Capacity	5000 Milliamp Hours
Battery Cell Type	Lithium Polymer
Battery Charge Time	2.5 Hours
Battery Weight	76 Grams
Best Sellers Rank	#147 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #11 in Cell Phone Portable Power Banks
Brand	Anker
Cable Length	0.45 Inches
Color	Black
Compatible Cellular Phone Models	Apple iPhone 16, Apple iPhone 16 Pro, Apple iPhone 16 Pro Max
Compatible Devices	iPhone 16/15 Plus/15 Pro/15 Pro Max/14/14 pro/13 Series, iPad,
Compatible Phone Models	iPhone
Connector Type	USB Type C
Customer Reviews	4.2 4.2 out of 5 stars (19,839)
Item Dimensions	4.13 x 2.62 x 0.45 inches
Item Dimensions L x W x Thickness	4.13"L x 2.62"W x 0.45"Th
Item Weight	4.96 ounces
Manufacturer	Anker
Mfr Part Number	A1610012
Model Number	A1610
Number of Batteries	1 C batteries required.
Number of Items	1
Number of Ports	1
Other Special Features of the Product	Wireless Charging
Portable	No
Power Source	Battery
Reusability	Rechargeable
UPC	194644086718 194644077624
Unit Count	1.0 Count
Voltage	3.85 Volts
Warranty Description	24-month warranty
Warranty Type	Limited
Wireless Charging Standard	MagSafe

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$73.20

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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