Why your power bank seems to drain quickly than expected?

Power banks lose energy during charging due to heat and voltage conversion, typically supplying 60%-70% of their power to other devices. Therefore, a fully charged Charmast 20,000mAh power bank can deliver about 12,000-14,000mAh to your devices.

Can this power bank be taken on airplanes?

Carry-on allowed. Do not pack in checked baggage.

Does it work with small devices?

Yes. Enable low-current mode for headphones, watches, etc.

Is it normal for the portable charger and phone to get warm while charging?

Yes. Some warmth is normal during charging and use due to energy conversion. If temperatures exceed 45°C (113°F), stop use immediately.

Is it compatible with laptops?

No. Use a 30W+ laptop charger instead.

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

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22.5W Fast Charging Power Bank, 4 Cables Portable Charger 20000mAh | USB C Battery Pack, 6 Outputs 4 Inputs Powerbank for Travel, Work, LED Display, Compatible with Smart Phones, Tablets

Product ID: 578503924

Details

Battery capacity
20000 Milliamp
Brand
charmast
Colour
Connector type
4 Built-in for
Special feature
Built In Cable

⚡22.5W super-fast charging

🔋20000mAh high-capacity battery

🔌4 built-in cables + 4 ports, 6 devices at once

¥9402

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.

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Description

⚡ Power up your hustle, anytime, anywhere!

SMART DIGITAL DISPLAY - Know your exact power level down to 1%—no more surprises, just seamless planning.
MASSIVE 20000 M AH CAPACITY - Power through days with up to 4 full iPhone 15 charges—never ration your battery life again.
LIGHTNING FAST 22 5 W OUTPUT - Get 50% charge in just 30 minutes—perfect for busy pros on the go.
SLEEK DURABLE TRAVEL READY - Slim, pocket-friendly design with tangle-free cables and a protective pouch—charge in style anywhere.
CHARGE 6 DEVICES SIMULTANEOUSLY - Ultimate all-in-one power solution with 4 built-in cables and 4 extra ports—ditch cable clutter forever.

The Charmast 22.5W Fast Charging Power Bank features a massive 20000mAh lithium polymer battery with 4 built-in cables and 4 additional ports, enabling simultaneous charging of up to 6 devices. It delivers rapid 22.5W output for quick top-ups, supports precise battery monitoring via a smart LED display, and is designed for portability with a slim profile and travel pouch. Ideal for professionals and travelers, it combines convenience, speed, and reliability in one sleek package.

Specifications

ASIN	B0CJBQBB7F
Amperage	3 Amps
Battery Capacity	20000 Milliamp Hours
Battery Cell Type	Lithium Polymer
Battery Weight	74 Grams
Best Sellers Rank	19 in Mobile Phone Portable Power Banks
Brand Name	charmast
Colour	Black-20000mAh
Compatible Devices	Smartphone, Smartwatch, Tablet
Connector Type	4 Built-in Cables:USB-C,for iPhone,Micro USB,USB-A, 4 Ports:USB-C1+USB-A 2+Micro USB *1
Country of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (4,871)
Included Components	Portable Charger1, Travel Pouch1, User Manual*1
Is Electric	Yes
Item Dimensions	16 x 7.3 x 1.9 centimetres
Item Dimensions L x W x Thickness	15.4L x 7.3W x 2.2Th centimetres
Item Weight	340 Grams
Manufacturer	Dong guan Utopia-Originality Technology Co., Ltd
Manufacturer Part Number	C2065
Maximum Output Power	22.5W
Model Number	C2065
Number of Batteries	2 Lithium Polymer batteries required. (included)
Number of Items	1
Number of Ports	6
Other Special Features of the Product	Built In Cable, Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection
Portable	Yes
Power Source	Corded Electric
Product Warranty	3-year warranty
Reusability	Rechargeable
Unit Count	1.0 count
Voltage	5 Volts

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