Power Bank, 40,000mAh 65W Portable Laptop Charger with USB C Fast Charging, External Battery Pack Compatible with MacBook Pro/Air, Dell XPS, iPad, iPhone 15, Samsung, Tablet, Steam Deck

Power Bank, 40,000mAh 65W Portable Laptop Charger with USB C Fast Charging, External Battery Pack Compatible with MacBook Pro/Air, Dell XPS, iPad, iPhone 15, Samsung, Tablet, Steam Deck

Q: 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 Romoss Power Bank offers an estimated 2200mAh to 28000mAh to power devices.

Q: 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 Romoss Power Bank meets the temperature limits of the IEC62368 certification standard.

Q: Why does the battery drain so quickly?

When the Settings selection screen is always on, both the screen and MCU are working, so it is normal that the battery drains quickly.It uses 15% of the battery in about 24 hours. We recommend turning off the display screen when not in use.

Q: Why does charging stop at 80%?

Your iPhone may automatically stop charging at 80% to protect its battery from overheating, as part of iOS 17's thermal management strategy. Charging will resume once the device cools down. Moving it to a cooler spot can help speed up this process.

Q: How can I keep my power bank in the best possible condition?

Charge your power bank regularly. Even if you don't use the power bank for a long time, remember to charge it every six months to keep the battery level around 50%. This is because power banks can discharge even when not in use.

4.3/5

Product ID: 663612677

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Details

Connector type
USB Type C
Brand
ROMOSS
Battery capacity
40000 Milliamp
Colour
Black
Special feature
Digital Auto

⚡65W ultra-fast USB-C charging

🔋Massive 40,000mAh capacity

🔌3 outputs + 3 inputs for multi-device power

Frequently Bought Together

ROMOSS Power Bank, 40,000mAh 65W Portable Laptop Charger with USB C Fast Charging, External Battery Pack Compatible with MacBook Pro/Air, Dell XPS, iPad, iPhone 15, Samsung, Tablet, Steam Deck

ROMOSS Power Bank, 30,000mAh Portable Phone Charger with USB C 3 Outputs & 3 Inputs, External Battery Pack PD 18W with iPhone 15/14/13/12, iPad, Samsung Galaxy and More

Hermitshell Hard Travel Case for ROMOSS 30000mAh / ROMOSS 40000mAh / 26800mAh 18W Fast Charger Sense 8+ / Sense 8P+ / SW30PS+ Portable Charger

Description

🔋 Stay powered, stay unstoppable — never miss a beat!

POWER UP IN A FLASH - Charge your MacBook Pro to 41% in just 30 minutes with blazing 65W USB-C fast charging.
SAFETY FIRST ALWAYS - Rigorous safety certifications ensure your devices stay protected while you stay connected.
UNIVERSAL COMPATIBILITY - Seamlessly charge laptops, smartphones, tablets, and even your Steam Deck—one power bank to rule them all.
ENDLESS ENERGY ON THE GO - Massive 40,000mAh capacity means no more hunting for outlets during work, travel, or play.
TRIPLE THREAT CONNECTIVITY - Simultaneously power up to three devices with versatile USB-C and USB-A outputs plus three input ports.

This 40,000mAh power bank delivers ultra-fast 65W USB-C charging, compatible with laptops like MacBook Pro/Air and Dell XPS, plus smartphones and tablets. Featuring three output and three input ports, it supports simultaneous multi-device charging with comprehensive safety certifications, making it the ultimate portable power solution for professionals on the move.

Specifications

Unit Count	1.0 Count
Item Dimensions L x W x Thickness	6.67"L x 3.21"W x 1.73"Th
Item Weight	952 Grams
Battery Cell Type	Lithium Polymer
Color	Black - 65W
Warranty Type	12 Months Worry Free Warranty
Recommended Uses For Product	Laptop
Charging Time	16 Hours
Is Product Cordless	No
Output Current	3 Amps
Number of Outlets	5
Compatible Devices	Laptop, Iphone, Samsung, macbook, Ipad, Nintendo Switch, Tablet, Smartphone
Is Electric	Yes
Portable	Yes
Voltage	15 Volts
Power Source	Corded Electric
Amperage	3 Amps
Number of Ports	5
Connector Type Used on Cable	USB Type C, Micro USB, USB Type A
Battery Capacity	40000 Milliamp Hours
Additional Features	Digital Display, Auto Shut-Off, 65W Fast Charge

Have a Question? See What Others Asked

Why is my power bank providing fewer charges than expected?

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

Why does the battery drain so quickly?

Why does charging stop at 80%?

How can I keep my power bank in the best possible condition?

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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AED 444

Duties & taxes incl.

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Secure Transaction

12 interest-free installments with tabby

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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