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 the number of charges: (Power Bank Capacity × 0.65) ÷ Device Battery Capacity. For example, a 5,000mAh power bank gives an iPhone 15 (3,877mAh) about 0.8 charges, and an iPhone 15 Pro Max (4,852mAh) about 0.64 charges.

How can I charge an iPhone 14 Pro Max with this power bank?

To charge iPhones prior to the iPhone 15 series, an additional USB-C to Lightning cable is required (not included).

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🔋 Stay charged, stay unstoppable.

POWER UP IN A FLASH - Dual USB-C ports with PowerIQ 3.0 deliver rapid 22.5W charging to keep you ahead of the pack.
TANGLE FREE CHARGING - Innovative foldable USB-C connector means no more cable mess, just seamless power on the go.
PEACE OF MIND INCLUDED - Backed by a 24-month warranty and Anker’s trusted customer service for worry-free charging.
ALL DAY DEVICE LIFELINE - 5,000mAh capacity ensures your iPhone 15, Samsung S22/23, or AirPods stay energized through your busiest days.
POCKET SIZED POWERHOUSE - Compact 99g design slips effortlessly into your bag or pocket—style meets ultimate portability.

The Anker iPhone 15 Portable Charger is a sleek, lightweight 5,000mAh power bank featuring dual USB-C ports with 22.5W PowerIQ 3.0 fast charging and a foldable built-in USB-C connector. Designed for seamless portability and compatibility with iPhone 15, Samsung S22/23, iPad Pro/Air, and AirPods, it offers reliable all-day power backed by a 24-month warranty.

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€ 44.84

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Customer service was outstanding when I had questions about the product.

2 days ago

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Product Dimensions	13.11 x 10.11 x 3.61 cm; 99.22 g
Batteries	1 Lithium Polymer batteries required. (included)
Item model number	A1653
Special features	Built In Cable
Colour	Black Stone
Battery Power Rating	5000 Milliamp Hours
Manufacturer	Anker Innovations Limited
Country of Origin	China
Item Weight	99 g

Anker iPhone 15 Portable Charger, Nano Power Bank with Built-in USB C Connector,5,000mAh Portable Charger 22.5W,for iPhone 15 Series,Samsung S22/23 Series,iPad Pro/Air,AirPods,and More,Black

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