AC Adapter Lenovo 45W 3-Prong W125671355 – 45W power supply for laptops

Lenovo AC Adapter W125671355 is a 45W mains power supply with a 3-prong input designed to provide stable power to compatible Lenovo laptops and portable devices. It delivers a consistent 45W output for charging and operation, allowing devices to run and recharge simultaneously. The adapter is intended as a replacement for original chargers that use the same connector type and wattage, and it supports continuous use at home, in the office, or on the move.

Advantages

This 45W Lenovo AC adapter provides steady power delivery and regulated output to protect battery charging cycles. The three-prong mains input improves grounding and reduces electrical noise compared with two-prong alternatives. Its compact rectangular housing and fixed cable make it easy to transport and connect, while standard safety features such as overcurrent and short-circuit protection help maintain reliable operation during regular use.

Suitable for

• Charging compatible Lenovo laptops and netbooks that require a 45W external adapter
• Providing mains power during stationary work in offices or at home
• Use while travelling when an equivalent-wattage replacement is needed
• Replacing a lost or damaged original adapter with the same connector and wattage

Key specifications

• Output power: 45 watts
• Input type: three-prong AC mains connector
• Output type: fixed DC output cable compatible with Lenovo laptop power input
• Protection features: overcurrent and short-circuit protection (built-in)
• Typical use: charging and powering laptops and portable devices

How to use

Connect the three-prong mains plug to a suitable AC outlet, then insert the DC plug into the laptop's power input socket until it seats securely. Verify the device indicates charging or mains power operation. When unplugging, first disconnect from the laptop, then remove the mains plug from the outlet. Use the adapter on a hard, flat surface and avoid covering the housing during extended operation to ensure adequate heat dissipation.

Recommendations

Use this adapter only with devices that accept a 45W external power source and the same connector type. Avoid exposing the adapter to liquids, extreme temperatures, or prolonged direct sunlight. Inspect the cable and connectors regularly for damage; discontinue use if insulation or connectors are cracked or frayed. For optimal battery health, follow the laptop manufacturer's charging guidelines.