Top 10 Best usb to 9v adapter in 2026

Last Updated - 6/19/2026

🏆Best Choice

DROK

DROK USB to 9v, 5v to 12v Step Up, USB Cable DC 5V Boost to 9V 12V Voltage Converter 1A Step-up Volt Transformer Power Regulator Line with LED Display

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•DROK USB step up boost converter input voltage: DC 5V, output voltage: DC 12V/9V, max output current: 0.8A (12V) or 1A (9V).
•APPLICATION: the usb to DC 12V/9V cable can be used to power the router via power bank if power down. In addition, can also be applied to other device which is 5v power supply, such as small fan, desk lamp, solar panel, USB power pack, power adapter, speakers that requires for 12V/9V poewr and bluetooth audio etc.
•SWITCH & LED DISPLAY: our stepup regulator is designed with switch, you can choose the output DC 12V or 9V through it, and the LED display would tell the output voltage value.
•CONVENIENT USE: plug and play, you can still enjoy the WIFI during power cuts; design with small dimension, is very convenient to carry out.
•PACKAGE INCLUDING: 1x 5v to 9v 12v USB converter; 1x 3.5*1.35mm DC connector.

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$7.99

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KAABEE

USB to 9V Battery Connector Eliminator Replace 6F22 6LR61 USB Power Converter Kit Connect Cable 78IN 200CM

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Length: 200CM / 78INCH
•Input (USB Adapter): 5V / 2A
•Output 6F22: 9V / 0.7A
•Material: Plastic

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$15.99

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HiLetgo

HiLetgo USB Boost Converter Cable DC 5V to 9V 12V USB Step-up Cable USB to DC 5.5x2.1mm 3.5x1.35mm USB Power Supply Adapter UBS Power Voltage Boost Converter Max Power 18W

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•USB Boost Converter Cable DC 5V to 9V 12V
•Input Voltage: 5V; Output Voltage: 9V / 12V
•Max. Output Current: 9V 2A, 12V 1.5A
•USB to DC 5.5x2.1mm and 3.5x1.35mm
•Can be used to power the router via power bank if power off, can still enjoy the WIFI freely during power cuts.

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$7.49

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Hizsoaor

2 Pack USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft), (Tip Positive)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•USB input 5V, DC output 9V, max current 800mAh, cable length 4.9ft. 2 Pack sold.
•USB DC 5V to DC 9V volt cable with Jack 5.5 x 2.1mm, positive tip (refer to the second image). Please check if it fits in the power jack on your devices
•USB to 9V DC convert cable applicable equipment: Fan, Table Lamp, Piano Keyboard, Solar Panel, USB Power Pack, Power Adapter, Bluetooth Audio, Wireless Router, Speakers, also can be used to power the router via power bank if power down
•5V to 9V usb voltage adapter has built-in upgraded smart IC chip, which provides perfect overcurrent, overvoltage, overload or short circuit protection for your equipment, safe and reliable
•Alloy interface, tough, corrosion resistant, effectively extend the service life of the step-up line

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$9.99

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iGreely

iGreely DC 5V to DC 9V USB Voltage Step Up Converter Cable 3.3ft/1m Power Supply Adapter Cable with DC Jack 5.5 x 2.5mm or 5.5 x 2.1mm, for Fan, Led Light, Wireless Router, Speakers and More Devices

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Please Note: the cable will not work for devices current more than 0.8A.
•Please Note: the output port is 5.5mm * 2.1mm, also work with port 5.5mm * 2.5mm via the adpater coming in the package, don't work with devices with port 3.5mm x 1.35mm, 4.0mm * 1.7mm, 6.0mm * 4.4mm, 6.3mm * 3.0mm, 5.5mm * 1.7mm, 4.8mm * 1.7mm, please make sure before purchase.
•【USB 5V to DC 9V Cable】Because the USB input is 5V 2A male, please make sure the current is 2A or the device may not work. The DC output is 9.0V and the max current is 0.8A. Note: NOT suitable for high current equipment
•【Safe & Reliable】As built in upgraded intelligent IC circuit, our voltage adapter provides your devices perfect protecetion from over-current, over voltage, overload or short circuit
•【Widely Usage】 It is super convenient for different kinds of devices such as fan, table lamp, bluetooth audio, wireless router, speakers which requires for 9V power. Useful for powering the WiFi router via a power bank or other 5V power source during power outages. Can also be used with other devices that require a 9V power supply

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$7.99

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YiKaiEn

YiKaiEn USB to DC 9V 12V Charging Cable, Universal Power Cord for Toys,Watches,Speaker,Camera,Monitor,Table Lamp,Phones,LED Light Strip, Router, DC 5.5 x 2.1mm with 10 Connector 3.3FT

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Product Function: Converts to 10 different charging ports via USB, supports a variety of devices. Converts USB 5V input to 9V/12V DC output (max 2A current), supporting devices rated for 9-12V/0.3A–2A. Ideal for low-power electronics. Features standard center-positive (inner + / outer -) DC plugs, ensuring safe compatibility with most 9-12V devices.
•Product details: USB to DC 5.5 x 2.1mm Plug, length: 3 FT (1 meter). Output: DC 9-12V, Maximum support 2A (Compatible 9-12V 2A, 1.75A, 1.5A, 1A, 0.7A, 0.5A, 0.3A etc.)
•10 Different Types of Connectors: Micro-USB, Type-C, Mini USB, LED Terminal, 2.5*0.7mm, 3.0*1.1mm, 3.5*1.35mm, 4.0*1.7mm, 4.8*1.7mm, 5.5*2.5mm.
•Universal Compatibility: Smartphones, Tablets, Wireless Chargers, Bluetooth Headphones, Bluetooth Speaker, Digital Cameras, MP3 players, MP4 players, Routers, Set-top Boxes, Cameras, Hard Disk Box, Sound Systems, Electronic toys, Scanner ,USB-HUB, LED Light Strip, Table Lamp, Mini fan, Power Bank, Recorder , DVR , DJ Controller and more 9-12V devices.
•User Guide: This product supports charging function and is equipped with ten plugs of different sizes, which can accommodate various household devices. Please select the appropriate plug size for your specific device.

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$9.99

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Sqrgreat

Sqrgreat USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•USB input 5V, DC output 9V, max current 800mAh, cable length 4.9ft
•USB DC 5V to DC 9V volt cable with Jack 5.5 x 2.1mm, positive (+) tip (refer to the second image), Please check if it fits in the power jack on your devices
•USB to 9V DC convert cable applicable equipment: Fan, Table Lamp, Piano Keyboard, Solar Panel, USB Power Pack, Power Adapter, Bluetooth Audio, Wireless Router, Speakers, also can be used to power the router via power bank if power down
•5V to 9V usb voltage adapter has built-in upgraded smart IC chip, which provides perfect overcurrent, overvoltage, overload or short circuit protection for your equipment, safe and reliable
•The alloy plug is effectively resistant to oxidation and corrosion, which can bring you a stable connection during use.

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$6.98

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Asobilor

Asobilor DC 5V to DC 9V USB Voltage Step Up Converter Cable, Power Supply Adapter Cable with DC Jack 5.5 x 2.1mm,Tip Negative(-) Design, for Fan, Led Light, Wireless Router, Speakers and More Devices

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Important Specifications: USB input 5V, DC output 9V, max current 1Ah, cable length 150cm. DC jack 5.5 x 2.1mm, Inner negative(-) polarity, Outside positive(+) polarity.
•Efficient Step-Up Conversion: This USB 5V to 9V step-up cable converts standard USB power into a stable 9V output, providing reliable power support for your devices.
•Versatile Compatibility: Perfect for a variety of devices including fans, table lamps, LED lights, piano keyboards, Bluetooth audio speakers, wireless routers, and more, catering to your diverse power needs.
•Safe and Durable Design: Made from high-quality materials, this cable is wear-resistant and heat-resistant, featuring overload protection to ensure the safe operation of your devices.
•Convenient Length: At 150cm, this cable offers flexibility for use in various settings, making it easy to connect in your home, office, or outdoor environments.
•Easy Connection: Equipped with a standard DC jack (5.5 x 2.1mm,Tip Negative(-) Design), this plug-and-play cable requires no complicated setup, making it user-friendly for everyone.

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$8.99

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DSD TECH

DSD TECH MagicConn SH-CP09A USB Type C PD to DC Power Cable-9V

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•DSD TECH: DSD TECH focuses on the development of communication connection devices such as USB/Serial/Wireless. We have served more than 100,000 customers in Europe, North America and Japan.
•MagicConn Series:High reliability, reuse, less waste of resources is the design philosophy of MagicConn. The DSD TECH team will develop over 100 different accessories for MagicConn over the next 10 years. We try to reduce the impact on the earth's environment from the perspective of product design to cope with global warming and increasingly serious pollution.
•PD Sink Chip: Built-in PD smart Sink chip, so that this PD cable can output 9V voltage stably, strong enough to support maximum 3A current, support USB PD fast charging. (Video and data transfer are not supported.)
•Compatibility: Support 100W 90W 60W 40W and other power supply PD fast charging, used to convert the PD power supply of the type-c interface into a general DC 5.5mm x 2.5mm interface.
•Customer Support: DSD TECH provides permanent technical support and 1 year product replacement service for this USB Type C PD to DC Power Cable.All questions will be answered within 1 working day.

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$9.99

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AITRIP

AITRIP 4pcs 5V to 9V USB Voltage Step Up Converter Cable Power Supply With 5.5x2.1mm DC Connect Male 1M for WiFi Router Mini Fan Speaker 3.2ft

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•USB Input voltage: DC 5V ； DC output voltage: DC 9V ； DC plug: 5.5*2.1mm ；Cable length: 1M
•USB input: 5V 2A male, Please Make Sure the current is 2A or the device may not work.Note: NOT Suitable for High Current Equipment.
•9v to usb voltage adapter has built-in upgraded smart IC chip, which provides perfect overcurrent, overvoltage, overload or short circuit protection for your equipment, safe and reliable
•It is widely used in 9V low-power equipment such as a wireless router, smart speaker, smart camera, light band, game console, table lamp, breast pump, mini fan, development board,etc.
•USB to 9V step up cable with DC jack 5.5 x 2.1mm, please check if it fits in the power jack on your devices.

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$9.99

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