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A coiled black internal power cable with a square connector tip

Revitol

Revitol 135W 20V 6.75A internal power cable for Lenovo ThinkPad T440p T530 T540p W540

SKU CH-B0EC-526VW

Supplies 135 W at 20 V 6.75 A to compatible ThinkPad models including T440p, T530, T540p and W540

  • Delivers 135W at 20V 6.75A for compatible ThinkPad models
  • Accepts 100 to 240V AC input for worldwide use
  • Operates on 50 to 60Hz mains frequency
  • Features square USB square tip connector
  • Supports T440p T530 T540p W540 laptops

Compatible laptops

This Revitol internal power cable fits Lenovo ThinkPad models T440p, T530, T540p and W540 that require a 135 W, 20 V, 6.75 A adapter. It uses a square USB-style tip and accepts a three-prong or two-prong AC plug for worldwide mains input.

Thermals noise and power draw

The adapter operates from 100 to 240 V AC at 50 to 60 Hz with an input current of 1.0 to 0.6 A, delivering a steady 20 V at 6.75 A for 135 W output. No fan is present so operation is silent and heat remains limited to the brick itself during normal charging.

Sustained load behaviour

Under continuous load the unit maintains its rated 135 W output at 20 V and 6.75 A without throttling, keeping the connected ThinkPad powered and the battery charging. The wide input range ensures stable performance across different regional mains supplies during extended sessions.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $37.99
Pricier than about 77% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How is the square USB square tip connector seated in the ThinkPad T440p, and what step do people get wrong?

Align the square tip with the port on the T440p and press straight in until it clicks; the common error is forcing it at an angle which can bend the connector pins.

What maintenance or replacement will the 135W 20V 6.75A adapter need later?

The adapter itself has no user-serviceable parts; replace the unit if the output drops below 20V 6.75A or the cable insulation shows wear.

What limit appears first when the adapter runs at 135W continuously?

Sustained 135W output at 20V 6.75A will hit the thermal limit of the sealed enclosure before any electrical limit is reached.

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