170W 20V 8.5A Laptop Charger Replacement for Lenovo ThinkPad

In this review the reviewer looks at the 170W 20V 8.5A replacement charger designed for a broad range of Lenovo ThinkPad models. The bottom line is simple: it is a practical, budget-friendly replacement adapter for users who need a highpower charger with the common square yellow tip, and it delivers full 170W output for demanding laptops. It is best for owners who need compatibility across P and T series machines and who accept an OEM unit rather than an original factory charger.

Key Features

• Output Power: The 170W 20V 8.5A rating supplies enough power for highperformance mobile workstations and also fits some 135W units, so it handles both charging and heavy workloads.
• Wide Input Range: The 100-240V input allows use worldwide with the correct plug, making it convenient for travel or multiregion users.
• Connector Type: The square yellow tip matches many ThinkPad power ports, ensuring a snug physical connection for compatible models.
• Safety Certifications: CE, FCC and RoHS listings indicate basic compliance with common safety and environmental standards for aftermarket adapters.
• OEM Alternative: Sold as an OEM replacement, it is a lowercost option compared with original manufacturer units for users prioritizing price and immediate availability.

Who It's For

This charger is a sensible choice for professionals and students using Lenovo ThinkPad P and T series laptops such as P50 through P73, T540P and newer P1 or P15 lines who need a highwattage power supply and want a lowercost OEM replacement. It suits users who already know their device uses the square yellow tip and those who often work plugged in while running CPU or GPU intensive tasks.

Users who require guaranteed longterm reliability from the original equipment manufacturer or who want extended warranty support from the laptop maker should look elsewhere. Also, people with models that use a different connector style must confirm physical compatibility before purchasing.

Pros & Cons

Pros

• Provides full 170W 20V 8.5A output, adequate for performance ThinkPad models and heavy workloads.
• Wide 100-240V input makes it usable internationally with proper plug adapters.
• Certified by CE/FCC/RoHS, offering a baseline of safety compliance for an aftermarket adapter.
• Matches several Lenovo compatible part numbers, simplifying replacement matching.

Cons

• As an OEM aftermarket unit rather than a factory original, some customers report mixed longevity, so durability can vary.
• Compatibility is generally good but not universal; buyers must confirm model and connector before ordering.

Specifications

Output	170W 20V 8.5A (also fits 135W 20V 6.75A)
Input Voltage	100-240V
Connector Size	Square yellow tip
Certifications	CE / FCC / RoHS
Compatibility	Lenovo ThinkPad P1, P50, P51, P52, P53, P70, P71, P73, W540, W541, T540P, P15, P17, T15g, X1 Gen 1-4
Compatible Part Numbers	SA10R16886, 02DL140, ADL170SCC3A, ADL170NLC2A, ADL170NDC2A, ADL170NDC3A, ADL170NLC3A

Our Verdict

The 170W 20V 8.5A replacement is a practical value pick for ThinkPad owners who need a highpower OEM charger quickly and at lower cost; it covers a wide list of compatible models and includes basic safety certifications. Buyers who prioritize long service life or official manufacturer support should weigh that tradeoff, but for immediate, fullpower replacement it is a cost effective option.

Frequently Asked Questions

Will this adapter fit my ThinkPad?
It fits ThinkPad models that use the square yellow tip listed in the compatibility section; confirm your model and port type before buying.

Is this an original Lenovo charger?
No; this is sold as an OEM replacement, not an original factory unit, which can affect warranty and durability expectations.

Does it work worldwide?
Yes, the 100-240V input supports international voltage ranges, but you may need a local plug adapter for the outlet style.