45N0113 - 170W 20V 8.5A 7.9mm x. 5.5mm Round Tip AC Adapter Charger for ThinkPad W520 W530

170W 20V 8.5A 7.9mm x. 5.5mm Round Tip AC Adapter Charger for ThinkPad W520 W530

High-power 170W AC adapter with the classic round barrel 7.9x5.5mm tip with center pin. Built for workstation-class ThinkPads that require higher wattage. All listed FRU part numbers are fully interchangeable and belong to the same 170W round-tip family.

What’s Included: 170W AC adapter + 3-prong power cord

Technical Specifications

• Output Voltage: 20V DC
• Output Current: 8.5A
• Maximum Power: 170W
• Connector: Round barrel 7.9mm (OD) × 5.5mm (ID) with center pin
• Input Voltage: 100–240V AC, 50/60Hz (auto-switching)
• Protection: Over-current, over-voltage, and thermal safeguards

Important Compatibility Note

Please note that the following list is not exhaustive. Compatibility depends on your system’s connector and power requirements. This adapter is for ThinkPads that use the round-tip 7.9x5.5mm connector. It is not compatible with Slim Tip (rectangular) or USB-C adapters.

✅ Confirmed Compatibility

✔ ThinkPad W-Series: W520, W530

Interchangeable Part Numbers

45N0112, 45N0113, 45N0114, 45N0117, 45N0118, 45N0349, 45N0350, 45N0353, 45N0354