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 5500mAh to 7000mAh to power devices.

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

To estimate charges, use this formula: (Power Bank Capacity × 0.7) ÷ Device Battery Capacity. For example, an iPhone 15 with a 3,877mAh battery can receive about 1.92 charges from a 10000mAh power bank (calculated as (10000mAh × 0.7) ÷ 3,877mAh).

How can I charge an iPhone 13 Pro Max with this power bank?

To charge iPhones prior to the iPhone 15 series, an additional USB-C to Lightning cable is required.

Is it normal for the power bank to get slightly warm during use?

Slight heating due to efficiency losses in the conversion circuit is normal. The temperature of this Anker Power Bank meets the temperature limits of the IEC62368 certification standard.

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Nano 3-in-1 Portable iPhone Charger, 10,000mAh Power Bank with Built-in USB-C Cable and Foldable Wall Plug, 30W Max Battery Pack, Travel Essentials for iPhone 17/16/15 Series, Galaxy, MacBook

Nano 3-in-1 Portable iPhone Charger, 10,000mAh Power Bank with Built-in USB-C Cable and Foldable Wall Plug, 30W Max Battery Pack, Travel Essentials for iPhone 17/16/15 Series, Galaxy, MacBook

Product ID: 627309095

Details

Battery Capacity
10000 Milliamp
Brand
Anker
Color
Black
Connector Type
C Cable*1
Special Feature
Fast Charging

⚡30W two-way fast charge

🔋10,000mAh powerhouse

🧳Compact travel-ready design

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VT20450

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In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

Secure transaction

Details

Battery Capacity
10000 Milliamp
Brand
Anker
Color
Black

Description

⚡ Stay charged, stay ahead — power that travels as fast as you do!

DUAL DEVICE CHARGING - Simultaneously power two devices, maximizing your productivity and staying connected.
ALL IN ONE CONVENIENCE - Built-in USB-C cable plus foldable wall plug means zero cable clutter and ultimate portability.
LIGHTNING FAST 30 W OUTPUT - Charge your iPhone 15 Pro to 50% in just 25 minutes with high-speed power delivery.
POWER UP ANYWHERE ANYTIME - 10,000mAh battery capacity fuels your devices multiple times on the go.
TRAVEL OPTIMIZED COMPACTNESS - Lightweight (8.82 oz) and pocket-friendly dimensions make it your perfect travel companion.

The Anker Nano 3-in-1 Portable iPhone Charger is a sleek, travel-friendly 10,000mAh power bank featuring a built-in USB-C cable and foldable wall plug. Delivering up to 30W two-way fast charging, it powers iPhone 15/16/17 series, Galaxy phones, and MacBooks efficiently. Compact and lightweight, it supports simultaneous charging of two devices, making it an essential tech companion for busy professionals on the move.

Specifications

ASIN	B0CX4992Z8
Antenna Location	Indoor/Outdoor
Battery Capacity	10000 Milliamp Hours
Battery Cell Type	Lithium Polymer
Battery Weight	144 Grams
Best Sellers Rank	#332 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #26 in Cell Phone Portable Power Banks
Brand	Anker
Color	Black
Compatible Cellular Phone Models	Apple iPhone 15, Apple iPhone 15 Pro, Samsung Galaxy S24
Compatible Devices	Smartphone
Compatible Phone Models	iPhone 16/15 Series, Galaxy, MacBook
Connector Type	USB-C1+Built-in C Cable1
Customer Reviews	4.6 out of 5 stars 2,738 Reviews
Global Trade Identification Number	00194644067458
Is Electric	No
Item Dimensions	4.25 x 1.22 x 1.97 inches
Item Dimensions L x W x Thickness	4.25"L x 1.22"W x 1.97"Th
Item Weight	8.82 Ounces
Manufacturer	Anker Innovations Limited
Mfr Part Number	A1637
Model Number	A1637
Number of Batteries	1 Lithium Ion batteries required.
Number of Items	1
Number of Ports	2
Other Special Features of the Product	Fast Charging
Portable	No
Power Source	Battery
Rapid Charging Performance	50% in 45 minutes
Reusability	Rechargeable
Special Feature	Fast Charging
UPC	194644067458
Unit Count	1.0 Count
Voltage	5 Volts
Warranty Description	18
Warranty Type	Limited

Reviews

F**R

24.02.2026

A**N

8.11.2025

M**Y

12.04.2026

M**Z

4.02.2026

L**Y

15.02.2026

P**O

6.04.2026

J**K

16.04.2026

S**R

2.04.2026

F**T

7.09.2025

S**O

3.01.2026

S**S

25.01.2025

Ó**R

13.03.2026

R**Y

5.03.2026

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VT20450

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Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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