YTech 170W 20V 8.5A ThinkPad Slim-Tip Charger

YTech 170W 20V 8.5A replacement charger is a high-power AC adapter made to reliably charge compatible Lenovo ThinkPad and select Legion laptops using the yellow rectangular slim-tip connector.

This YTech replacement adapter delivers the same 20V, 8.5A, 170W output specification used by many Lenovo factory chargers so you can power workstations and high-performance notebooks without carrying the original brick. Designed for broad compatibility, it works with numerous ThinkPad and IdeaPad models as well as some Legion systems that use the 11×5 mm slim-tip (yellow rectangle) connector. The unit accepts 100–240V AC input, includes built-in protections, and is sized to be a direct replacement for part numbers like ADL170NLC2A, 01FR043, 45N0370, and similar OEM references.

Which laptop models will this YTech adapter power?

This adapter supports many Lenovo ThinkPad, IdeaPad and Legion systems that require a 170W, 20V supply with the yellow rectangular slim-tip. Check your original adapter label or laptop documentation to confirm the voltage and connector type before ordering.

• ThinkPad series: T540P, P50/P51/P52/P53, P70/P71/P73, P15/P17/P15v/P15g/P15p, P1, X1 and similar models.
• ThinkPad E and W series: E440, W540, W550s and other systems listed on the product compatibility list.
• Legion and IdeaPad models that specify ADL170NLC2A / ADL170NLC3A or DP/N 01FR043, 45N0370, 45N0369.
• Always verify connector size: yellow rectangle slim tip (11 x 5.0 mm) is required.

How does the YTech adapter protect my laptop while charging?

The adapter incorporates standard electrical safeguards to reduce the risk of overcurrent, overvoltage, and short circuits. These protections help maintain consistent output under typical usage and prevent damage from common power irregularities.

• Input range 100–240V supports international use with appropriate plug adapters.
• Built-in overcurrent and overvoltage protection helps protect the laptop’s power circuit.
• Stable 20V 8.5A output minimizes voltage fluctuation during high-load tasks.

What connector and specifications should I double-check before buying?

Match three key details from your original charger before purchasing: output voltage and current, physical connector type and OEM part numbers. If any of these differ, the adapter may not fit or supply correct power.

• Output: 20V, 8.5A (170W). Do not use if your laptop requires different voltage or wattage.
• Connector: yellow rectangular slim tip (11×5.0 mm). Verify shape and dimensions visually.
• Compatible part numbers: ADL170NLC2A, ADL170NLC3A, ADL170NDC2A, DP/N 01FR043, 45N0370, 45N0369 and similar.

Will this adapter charge at full speed during heavy use like gaming or rendering?

With the rated 170W output, this adapter supplies the power expected for heavy workloads on supported models, allowing the laptop to charge while running demanding applications. Performance depends on the system’s internal power draw and battery state, but the adapter’s wattage aligns with factory replacements for high-performance ThinkPad and Legion models.

• 170W rating supports charging and system power under substantial load in most compatible models.
• If a laptop draws more than 170W under extreme overclocking, battery depletion can still occur.
• Using the correct connector and OEM-equivalent adapter avoids throttling or compatibility issues.

Who is this for: The YTech 170W 20V 8.5A charger is intended for owners of compatible Lenovo ThinkPad, IdeaPad and select Legion laptops who need a direct replacement or spare power adapter that matches OEM specifications. It’s well suited for professionals, students, and gamers who require a high-wattage adapter with the yellow rectangle slim-tip, and for anyone replacing lost or damaged factory bricks while keeping full charging capability and protective features.