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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Nano 3-in-1 Portable Charger,10,000mAh 30W Travel Power Bank | Battery Pack with Built-In USB-C Cable and Foldable Wall Plug, for iPhone 17 / 16 / 15 Series (Black)

Product ID: 627309095

Details

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

⚡30W two-way fast charging

👜Compact & travel-friendly size

🔋10,000mAh capacity

¥16780

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Description

⚡ Power your hustle, anywhere, anytime.

DUAL DEVICE CHARGING - Keep two devices juiced simultaneously—perfect for multitasking pros on the move.
TRUSTED ANKER RELIABILITY - Backed by an 18-month warranty and 4.6-star rating from over 3,000 users—power you can count on.
LIGHTWEIGHT POCKET READY - At just 8.82 oz and compact dimensions, it fits effortlessly in your bag or pocket.
ALL IN ONE TRAVEL ESSENTIAL - Built-in USB-C cable + foldable wall plug + power bank = zero clutter, maximum convenience.
POWER UP FAST STAY UNSTOPPABLE - 30W output charges your iPhone 15 Pro to 50% in just 25 minutes—because your time is money.

The Anker Nano 3-in-1 Portable Charger combines a 10,000mAh lithium polymer battery with a foldable wall plug and built-in USB-C cable, delivering 30W two-way fast charging. Compact and lightweight, it charges an iPhone 15 Pro nearly twice on a single charge and supports simultaneous charging of two devices. Designed for professionals on the go, it offers reliable, clutter-free power backed by an 18-month warranty.

Specifications

ASIN	B0CX4992Z8
Antenna Location	Indoor/Outdoor
Battery Capacity	10000 milliamp_hours
Battery Cell Type	Lithium Polymer
Battery Weight	144 g
Best Sellers Rank	#469 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #43 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 4.6 out of 5 stars (3,092)
Global Trade Identification Number	00194644067458
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 C batteries required.
Number of Items	1
Number of Ports	2
Other Special Features of the Product	Fast Charging
Output Wattage	30 watts
Power Source	Battery
Rapid Charging Performance	50% in 45 minutes
Reusability	Rechargeable
UPC	194644067458
Unit Count	1 Count
Voltage	5 volts
Warranty Description	18
Warranty Type	Limited

Common Questions

Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

¥16780

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews