AC Adapter Lenovo 20V 2.25A 45W Model 5A10J75117 for Lenovo laptops

AC Adapter Lenovo 20V 2.25A 45W Model 5A10J75117 for Lenovo laptops is a replacement power adapter that supplies 20 volts at 2.25 amps (45 watts) for compatible Lenovo notebook computers. Intended as a direct substitute for original chargers with matching voltage and connector type, this adapter provides continuous power for charging the internal battery and running the laptop during typical tasks at home, in the office, or on the move.

Advantages

This AC adapter delivers stable 20V output and up to 2.25A current to ensure consistent charging and device operation. It includes built-in protection against common electrical issues, helping to reduce the risk of overcurrent and short-circuit damage. The compact form factor and lightweight construction make it convenient to carry as a spare or replacement unit for travel. The power rating of 45W balances portability and sufficient power for mainstream laptop workloads.

Key specifications

• Output voltage: 20 V
• Output current: 2.25 A
• Rated power: 45 W
• Connector type: laptop DC plug compatible with specified Lenovo models
• Input: AC mains voltage (standard regional range)
• Safety features: overcurrent and short-circuit protection
• Form factor: compact, lightweight adapter brick with attached cable

How to use

Connect the adapter to an appropriate AC mains outlet using the supplied mains lead or a compatible regional power cord. Insert the DC plug firmly into the laptop’s power jack until it seats securely. When connected, the laptop should indicate charging via its battery/charging LED or on-screen battery icon. Disconnect the adapter by pulling the plug straight out; avoid yanking the cable. For storage, keep the adapter in a dry, cool place and avoid tightly coiling the cord to prolong cable life.

Recommendations

Use the adapter only with laptops that accept 20V at 2.25A and with a compatible connector to avoid damage. Verify voltage and connector compatibility before use and replace the adapter if you notice overheating, frayed cables, or intermittent charging. For best results, use on a stable mains supply and avoid exposing the adapter to moisture or extreme temperatures.