AC adapter Lenovo SA10M42529 20V 2.25A power supply for laptops and compatible devices

Lenovo SA10M42529 AC adapter delivers a regulated 20V DC output at 2.25A to power and charge laptops and other compatible devices. This compact mains-to-DC power supply is designed to replace or supplement original adapters for systems that require a 20V/2.25A input. The adapter converts household AC into a stable DC output and includes an integrated cable and connector suitable for compatible Lenovo laptops and select third-party devices.

Advantages

The adapter offers a stable 20V output with 2.25A current capability to ensure consistent device operation and charging. Its compact form factor and integrated cable make it convenient for everyday transport and desk use. Built-in protection features such as overcurrent and short-circuit prevention help maintain safe operation when used with devices that match the specified voltage and current. The design permits straightforward replacement of a lost or damaged original adapter.

Suitable for

• Powering and charging Lenovo laptops and notebooks that accept a 20V, 2.25A input
• Use as a spare or replacement adapter for travel, office, or home
• Providing stable power for compatible external devices that require 20V/2.25A DC

Key specifications

• Output voltage: 20V DC
• Output current: 2.25A
• Power rating: 45W (nominal)
• Input: mains AC (standard domestic voltage range)
• Connector: fixed cable with manufacturer-specific plug compatible with supported devices
• Form factor: compact external AC adapter
• Protection features: overcurrent and short-circuit protection (built-in)

How to use

Connect the adapter to a mains outlet using the integrated AC cable and plug it into the device's DC input connector that matches the adapter plug. Ensure the target device supports a 20V, 2.25A power input before connecting. When connected, the adapter will supply power and charge the device per the device's charging circuit. Disconnect the adapter from the mains when not in use or during thunderstorms, and avoid forcing the connector to prevent damage.

Recommendations

Confirm device compatibility with a 20V/2.25A adapter and inspect the connector fit before each use. Use the adapter in dry, ventilated environments and avoid covering the adapter during operation to prevent overheating. For best results, use the adapter as a direct replacement for units with matching electrical specifications.