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Square yellow-tip laptop AC adapter, black rectangular brick

BASEUS

BASEUS 300W 20V 15A Square Yellow Tip Laptop AC Adapter

SKU CH-J054-5A9RQ

Delivers up to 300 W at 20 V 15 A with a square yellow tip for Legion, ThinkPad, IdeaPad and Yoga models

  • Product typeAC Adapters
  • Delivers 300 W for demanding workloads
  • 20 V 15 A output matches high-power laptops
  • Works worldwide on 100-240 V mains
  • Square yellow tip fits listed Legion models
  • Compatible with ThinkPad P73 and IdeaPad Pro series

300 W Square Yellow Tip Adapter

This 300 W AC adapter delivers 20 V at 15 A through a square yellow tip connector. It accepts 100-240 V input at 50-60 Hz for worldwide use. The unit is compatible with 230 W 20 V 11.5 A requirements as well. It is a new replacement charger for compatible laptops.

High-power Legion and ThinkPad owners

Buyers with supported Legion 5, 7, 9, Pro, LOQ, ThinkPad P and X1 Extreme models, plus select Yoga AIO and IdeaPad units, can use this adapter. It suits users who need the full 300 W output for demanding workloads. Laptops that require a different connector shape, lower voltage, or a proprietary pin layout cannot use this unit.

300 W 20 V 15 A output rating

The single specification that decides fit is the 300 W 20 V 15 A output combined with the square yellow tip. Match both the wattage and the connector to the laptop’s original charger before ordering.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $54.99
Pricier than about 85% of the 27,790 comparable items (median $30.99).

Specifications

Product
Product typeAC Adapters

Questions about this item

How do I connect the square yellow tip to my laptop and what is the common mistake?

Align the square yellow tip with the laptop's power port and insert it straight until it seats firmly; the common mistake is forcing it at an angle which can bend the connector pins.

What maintenance or replacement will this 300W 20V 15A adapter need over time?

The AC cable and connector tip wear with repeated plugging; replace the unit if the cable frays, the tip becomes loose, or output voltage drops below 20V under load.

What is the first limit reached when running this adapter at full 300W output continuously?

Sustained 300W 20V 15A output will hit thermal limits first; the enclosure temperature rises until internal protection reduces power or shuts the adapter down.

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