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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🔋 Power Up Your Life with Anker!

ALL DAY ENERGY - Stay powered up with a robust 5,000mAh capacity for uninterrupted device use.
COMPLETE PACKAGE - Includes a 2 ft USB-C cable, user manual, and a 24-month worry-free warranty.
CHARGE LIKE A PRO - Experience lightning-fast charging with 22.5W output and dual USB-C ports.
POCKET SIZED POWER - Designed to fit seamlessly into your pocket or purse for on-the-go charging.
TANGLE FREE CONVENIENCE - Enjoy a foldable USB-C connector that eliminates cable chaos.

The Anker iPhone 15 Portable Charger is a sleek, high-capacity power bank featuring a built-in USB-C connector and dual ports for fast charging. With a 5,000mAh capacity and a compact design, it’s perfect for keeping your devices charged on the go. Ideal for iPhone 15, Samsung S22/23, and more, it comes with a 2 ft USB-C cable and a 24-month warranty.

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€ 44.80

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Product Dimensions	7.7 x 3.68 x 2.49 cm; 99.22 g
Batteries	1 Lithium Ion batteries required. (included)
Item model number	A1653
Special features	Built In Connector
Colour	Ice Lake Blue
Manufacturer	Anker Innovations Limited
Country of Origin	China
Item Weight	99 g

Anker Nano Power Bank, Mini Portable Charger with Built-in Foldable USB-C Connector, 5,000mAh Battery Pack 22.5W, for iPhone 16/15 Series, Samsung, Huawei, iPad, AirPods, Xiaomi, Oppo and More (Blue)

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