Power adapter QOLTEC 45W 19V 2.37A with 5.5x1.7 mm connector

QOLTEC 45W 19V 2.37A power adapter with a 5.5x1.7 mm connector is an external AC–DC adapter designed to provide stable 19 V output for compatible portable devices. It supplies up to 45 watts (2.37 A) and uses a common 5.5 x 1.7 mm barrel plug, making it suitable as a replacement or spare power source for laptops and other equipment that accept this connector size. The adapter’s compact rectangular form factor and integrated cable simplify installation and transport for home, office and travel use.

Advantages

This QOLTEC adapter delivers a steady 19 V output and a maximum current of 2.37 A to maintain device operation and battery charging. The standardized 5.5×1.7 mm barrel connector ensures compatibility with many devices that use this plug type. Its external design keeps the power supply outside the device chassis, reducing heat inside the laptop and allowing easy swapping without opening equipment. The adapter is lightweight and compact for convenient storage and transport.

Suitable for

• Replacement power adapter for laptops that accept a 5.5×1.7 mm barrel connector and 19 V input
• Spare adapter for home, office or travel charging
• Powering portable devices and peripherals requiring up to 45 W (19 V, 2.37 A)

Key specifications

• Output voltage: 19 V DC
• Maximum output current: 2.37 A
• Maximum output power: 45 W
• Connector type: barrel plug, 5.5 x 1.7 mm
• Form factor: external inline AC–DC adapter

How to use

Connect the adapter to an AC mains outlet using the supplied or compatible mains cable, then insert the 5.5×1.7 mm barrel connector into the device’s DC input jack. Ensure the device accepts 19 V input and does not require higher current than 2.37 A. When connected, the adapter will provide power and charge the device’s battery if supported by the device’s charging circuitry. Disconnect the adapter from the mains before unplugging from the device to avoid sparks or wear on the connector.

Recommendations

Use this adapter with devices that explicitly support 19 V input and a 5.5×1.7 mm connector. Avoid using the adapter with devices requiring different voltages or connector sizes. Keep the adapter ventilated during use, avoid exposure to moisture, and inspect the cable and connector regularly for damage. If the device draws more current than the adapter’s rating, consult the device manufacturer for a suitable power supply.