AC adapter Lenovo 45W USB-C W125884594 compact design, 45W USB-C power delivery

Lenovo 45W USB-C AC adapter W125884594 is a compact power adapter that delivers up to 45 watts through a USB-C connector. Designed for charging compatible laptops and portable devices, it uses USB-C Power Delivery protocol to negotiate appropriate voltage and current for efficient and safe charging. The adapter's compact design and lightweight construction make it suitable for travel, office use, and everyday mobile workflows where reliable single-cable power is required.

Advantages

This adapter provides up to 45W of power via a USB-C port, enabling faster charging for supported laptops and steady charging for tablets and phones. The USB-C Power Delivery support allows automatic voltage/current negotiation for device protection and charging efficiency. Its compact footprint and low weight make it convenient to carry in bags or briefcases, while the standardized connector reduces the need for multiple chargers. The adapter is designed for stable output under typical operating conditions and convenient single-cable connectivity.

Suitable for

• Charging compatible Lenovo and third-party laptops with USB-C Power Delivery
• Powering tablets, smartphones and other USB-C portable devices
• Use as a travel charger due to compact size and light weight
• Replacing a compact or lost USB-C laptop charger

Key specifications

• Maximum output power: 45 W
• Connector type: USB-C (male)
• Charging protocol: USB Power Delivery (PD)
• Input: standard AC mains input (region-dependent)
• Form factor: compact, lightweight adapter housing

How to use

Connect the adapter to an appropriate AC mains outlet using the supplied or compatible region-specific power cord or plug. Insert the USB-C plug into the USB-C power port of the laptop or device. The adapter and the connected device will negotiate the required voltage and current via USB Power Delivery; charging will begin automatically once negotiation completes. Disconnect the adapter from the device and then from the mains when charging is finished or when transporting the adapter. Avoid using the adapter with devices that require higher than 45W unless the device supports negotiated lower-power charging.

Recommendations

Use the adapter with cables and devices that support USB-C Power Delivery. For optimal performance, use the original or certified USB-C cable rated for power delivery. Avoid exposure to extreme temperatures, liquids, and prolonged direct sunlight. If the adapter becomes unusually hot or emits odors or smoke, disconnect it immediately and stop use. Ensure the mains supply matches regional specifications and use a suitable plug or power cord where required.