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Black rectangular AC adapter with yellow square tip and attached power cord

DELL

DED200085M 85W 20V AC adapter yellow square tip

SKU CH-8DX4-PWRF1 MPN DED200085M

20 V 85 W AC adapter with yellow square tip and short-circuit protection

  • Battery type96 W
  • Battery voltage rating20 V
  • Power adapter voltage20 V
  • Power adapter current11.8A
  • Power adapter wattage85 W
  • Key featuresShort Circuit Protection, Yellow Square Tip, Corded Electric
  • Delivers 85 W at 20 V for reliable laptop charging
  • Yellow square tip fits listed Lenovo ThinkPad and Legion models
  • Built-in short-circuit, over-current, over-voltage and over-temperature protection
  • Universal 100-240 V input works worldwide at 50-60 Hz
  • 8 A output current supports high-demand workloads

85 W Dell AC adapter with yellow square tip

This 85 W Dell power supply delivers 20 V at up to 11.8 A through a yellow square connector. It is built for users who need a replacement or spare charger for compatible Dell laptops that require this specific tip geometry and wattage.

Replaces worn or lost 85 W Dell chargers

The adapter steps in when an original 85 W unit fails, is misplaced or a second charger is wanted for travel. The jump is worth it when the laptop demands 20 V 85 W input and the yellow square tip matches the device jack; lower-wattage bricks will not supply enough power for full performance or charging under load.

Limited to devices accepting 20 V 85 W via yellow

The barrel connector and 85 W ceiling restrict use to laptops designed for this exact voltage, current and tip profile. Machines that require higher wattage, a different voltage or an alternative connector — such as USB-C Power Delivery or a larger barrel — cannot use this adapter safely or at all.

How it compares

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

Price $40.99
Pricier than about 72% of the 27,760 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model nameDED200085M
Part numberDED200085M
Power
Battery type96 W
Battery voltage rating20 V
Power adapter voltage20 V
Power adapter current11.8A
Power adapter wattage85 W

Questions about this item

Does the yellow square tip fit the Lenovo ThinkPad P70, P71, P72 and P73 models?

Yes, the slim square tip is compatible with ThinkPad P70, P71, P72, P73 and other listed models.

What is the correct order to connect the AC adapter to avoid a power-on fault?

Plug the AC cord into the adapter first, then into the wall outlet, and finally insert the yellow square tip into the laptop.

When should the AC adapter be replaced if the output drops below 85W?

Replace the unit if it no longer delivers 20V at 8.5A or if the cable shows fraying near the square tip.

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