Laptop Power Adapter Energy4U CA33 — 45 W, 20 V, 2.25 A

The Energy4U CA33 laptop power adapter supplies 45 W of power at 20 V and 2.25 A to compatible notebooks and portable devices that accept an external AC/DC adapter. Designed to provide a stable, regulated output, this adapter supports continuous operation and battery charging for devices with matching voltage and current requirements. The compact external design makes it suitable for use at home, in the office, or while travelling where a reliable replacement or spare charger is needed.

Advantages

This adapter delivers a consistent 20 V output and up to 2.25 A current, ensuring predictable charging and operation for compatible laptops. Its 45 W power rating balances portability with sufficient capacity for many slim and mainstream notebook models. The external AC/DC format reduces internal heat load on the host device and simplifies replacement compared with built-in power supplies. The Energy4U CA33 is intended as a direct replacement when voltage and current specifications match, offering straightforward compatibility without extra configuration.

Suitable for

• Charging and powering notebooks that require 20 V and up to 2.25 A input
• Use as a travel or spare charger for office and home environments
• Replacing lost or damaged external laptop adapters with equivalent electrical specifications

Key specifications

• Output power: 45 W
• Output voltage: 20 V
• Output current: 2.25 A
• External AC/DC adapter form factor
• Regulated output for stable charging and operation

How to use

Confirm that the target laptop accepts a 20 V input and that its required current does not exceed 2.25 A before connecting this adapter. Connect the adapter to the mains supply via the included or appropriate mains lead, then plug the adapter output connector into the laptop’s power inlet. When connected correctly, the adapter provides power and charges the battery while the device is in use or standby. Disconnect the adapter from mains before unplugging from the laptop if required by local safety guidance.

Usage recommendations

Use the Energy4U CA33 only with devices that match the 20 V voltage and do not draw more than 2.25 A. Avoid exposing the adapter to moisture, extreme temperatures, or heavy mechanical stress. For optimal longevity, allow the adapter to ventilate while in use and disconnect it from mains when not required for extended periods.