AC Adapter Lenovo 90W 20V 4.5A for ThinkPad X1 Carbon (model 01FR052)

AC Adapter Lenovo 90W 20V 4.5A for ThinkPad X1 Carbon (model 01FR052) is a mains power supply designed to deliver stable 90-watt output to compatible Lenovo ThinkPad X1 Carbon laptops. The adapter provides a regulated 20V DC output at up to 4.5A through an integrated cable and connector that matches the laptop charging port. It includes a standard removable mains lead and compact brick-style housing intended for desktop, travel, and mobile use.

Advantages

The adapter offers consistent voltage regulation and overcurrent protection to maintain reliable charging and protect the laptop battery and internal circuits. Its 90W power rating supports charging during typical office workloads and light multimedia use while supplying enough power for battery charging and system operation. The integrated output cable simplifies connection to the laptop without additional adapters, and the compact form factor supports portability for frequent travellers.

Suitable for

• Powering and charging Lenovo ThinkPad X1 Carbon notebooks compatible with 20V 4.5A input.
• Replacement or spare adapter for home, office, and travel use.
• Use with docking stations or workstations that accept external AC adapters of similar specifications.

Key specifications

• Output power: 90 W
• Output voltage: 20 V DC
• Output current: 4.5 A
• Input: AC mains (standard detachable mains lead)
• Connector type: integrated laptop charging cable compatible with ThinkPad X1 Carbon series
• Protections: over-voltage, over-current and short-circuit protection
• Form factor: compact brick with attached output cable for portability

How to use

Connect the detachable mains lead to the adapter and plug the other end into a suitable AC outlet. Insert the adapter's output connector into the laptop charging port until it seats securely. When connected, the laptop should indicate battery charging via its LED or on-screen battery icon. Disconnect the adapter by first unplugging from the laptop and then from the mains outlet when charging is complete or before transporting the device.

Recommendations

Use the adapter with compatible Lenovo ThinkPad X1 Carbon models that accept a 20V, 4.5A input. Avoid exposing the adapter to moisture, extreme temperatures, or prolonged direct sunlight. For reliable operation, use the supplied mains lead and inspect cables regularly for damage; replace the adapter if the cable insulation or connector shows wear or overheating signs.