Why is my power bank providing fewer charges than expected?

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 estimate the number of charges for my device?

To estimate charges, use this formula: (Power Bank Capacity × 0.65) ÷ Device Battery Capacity. For example, an iPhone 15 (3,877mAh) can receive about 0.8 charges, and an iPhone 15 Pro Max (4852mAh) about 0.64 charges from a 5,000mAh power bank.

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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🔋 Charge smarter, not harder — power that fits your hustle.

TANGLE FREE TECH - Innovative foldable USB-C connector eliminates cable clutter and protects your charger on the go.
POWER UP IN A FLASH - Dual USB-C ports with PowerIQ 3.0 deliver blazing 22.5W output for rapid device charging.
ALL DAY ENERGY BOOST - 5,000mAh battery capacity ensures your iPhone, Samsung, or AirPods stay powered through busy days.
PEACE OF MIND INCLUDED - Backed by a 24-month warranty and friendly customer support for worry-free charging anywhere.
POCKET SIZED POWERHOUSE - Compact 7.7 x 3.68 x 2.49 cm design slips effortlessly into your bag or pocket—style meets convenience.

The Anker Nano Power Bank is a sleek, ultra-portable 5,000mAh charger featuring dual USB-C ports with 22.5W fast charging and a built-in foldable USB-C connector. Designed for professionals on the move, it offers reliable, tangle-free power for a wide range of devices including the latest iPhone and Android models, all backed by a 24-month warranty.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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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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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 USB-C Connector, Short Circuit Protection, Slim, Over Charging Protection, Fast Charging, Travel, USB-C1/C2: 5V⎓3A/9V⎓2.22/10V⎓2.25A Total output: 5V⎓3.6A max （MAX 18W）, USB-C1/C2：5V⎓3A/9V⎓2A
Other display features	Wireless
Color	white
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, Vivo, Oppo and More

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