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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Anker Nano 3-in-1 Portable Charger,10,000mAh 30W Travel Power Bank

Anker Nano 3-in-1 Portable Charger,10,000mAh 30W Travel Power Bank

Product ID: 628203651

Details

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

⚡30W two-way fast charge

👜Compact & travel-ready

🔋10,000mAh powerhouse

$110.83

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In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power Up Anywhere, Anytime — Because Your Hustle Never Stops

ALL IN ONE POWERHOUSE - Seamlessly combines power bank, foldable charger & built-in USB-C cable for ultimate convenience on the go.
DUAL DEVICE EFFICIENCY - Charge two devices simultaneously and stay ahead in your busy, tech-driven lifestyle.
LIGHTNING FAST CHARGING - 30W output fuels your iPhone 15 Pro from 0 to 50% in just 25 minutes—because every minute counts.
TRAVEL LIGHT CHARGE HEAVY - Slim 4.25" x 2.01" x 1.22" design weighing under 9 oz fits perfectly in your bag or pocket.
TRUSTED DURABILITY SUPPORT - Backed by an 18-month warranty and Anker’s renowned customer service for worry-free power.

The Anker Nano 3-in-1 Portable Charger is a sleek, travel-optimized 10,000mAh power bank with a foldable wall plug and built-in USB-C cable. Delivering 30W two-way fast charging, it powers smartphones like the iPhone 15 Pro up to nearly twice on a single charge and supports simultaneous charging of two devices. Compact and lightweight, it’s designed for professionals on the move who demand reliable, rapid power with minimal bulk.

Specifications

ASIN	B0CX4BK8CX
Antenna Location	Indoor/Outdoor
Battery Capacity	10000 milliamp_hours
Battery Cell Type	Lithium Polymer
Battery Weight	144 g
Best Sellers Rank	#933 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #82 in Cell Phone Portable Power Banks
Brand	Anker
Color	White
Compatible Devices	Smartphone
Connector Type	USB-C1+Built-in C Cable1
Customer Reviews	4.6 4.6 out of 5 stars (3,055)
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. (included)
Number of Items	1
Number of Ports	2
Other Special Features of the Product	Fast Charging
Power Source	Battery
Reusability	Rechargeable
UPC	194644067465
Unit Count	1 Count
Voltage	5 volts
Warranty Description	18

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$110.83

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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