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Black rectangular power brick with voltage selector knob, 15 interchangeable DC tips and a polarity converter cable

BASEUS

BASEUS 30W Universal AC/DC Adapter 3-12V 2A 15 Tips Polarity Converter

SKU CH-YSY9-V1982

Adjustable 30 W AC-to-DC supply covers 3 V to 12 V at up to 2 A with fifteen tips and a polarity converter

  • TypeAC Adapters
  • Adjustable 3 V to 12 V output covers 90 % of low-voltage devices
  • 30 W maximum power supports 2 A at 12 V for demanding electronics
  • 15 interchangeable DC tips plus Type-C and Micro-USB fit most connectors
  • Built-in polarity converter enables centre-negative gear like pedals and keyboards
  • Wide AC 100 V to 240 V input works on 50 Hz or 60 Hz mains worldwide

Universal AC/DC Adapter 30W

This 30-watt universal adapter converts AC 100-240V input to adjustable DC output between 3V and 12V at up to 2A. It ships with fifteen interchangeable DC plugs and a polarity converter for centre-positive or centre-negative devices. The unit suits household and office electronics that require selectable low-voltage power. A built-in rotary switch lets you set the required voltage step.

Suits multi-device homes; not for high-draw gear

The adapter works well for users who power several 3-12V items such as Bluetooth receivers, toys, radios, chargers, LED strips, GPS units, cameras, USB hubs, coolers and similar accessories. The polarity converter extends compatibility to devices with reversed barrel polarity. Buyers needing more than 30W or voltages above 12V should look at a higher-capacity supply.

Covers 3-12V loads up to 2A

At 3V the adapter can deliver 2A, while at 12V the current limit falls to 1.5A to stay within the 30W ceiling. It comfortably runs typical 5V and 9V peripherals such as USB hubs, webcams and 5V 12V LED strips. Loads that demand sustained current above the rated 2A at lower voltages or above 1.5A at 12V will exceed the headroom.

Highlights

  • Adjustable 3 V to 12 V output covers 90 % of low-voltage devices
  • 30 W maximum power supports 2 A at 12 V for demanding electronics
  • 15 interchangeable DC tips plus Type-C and Micro-USB fit most connectors
  • Built-in polarity converter enables centre-negative gear like pedals and keyboards
  • Wide AC 100 V to 240 V input works on 50 Hz or 60 Hz mains worldwide

Specifications

TypeAC Adapters

Questions about this item

What mains voltage range does the BASEUS 30W adapter accept?

The adapter accepts AC 100–240 V at 50/60 Hz, so it works on standard household mains worldwide without a separate voltage converter.

Which of the 15 included tips matches a 5.5 × 2.1 mm barrel jack on my older device?

One of the 15 supplied tips is a 5.5 × 2.1 mm barrel connector; select that tip and set the voltage dial to the value printed on the device label.

How can I confirm the adapter is delivering the correct voltage after I set the dial?

Measure the output with a multimeter set to DC volts; the reading should match the selected voltage (3 V, 4.5 V, 6 V, 9 V or 12 V) within normal tolerance.

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