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White rectangular power brick with T-shaped magnetic connector and LED indicator, 70 inch cable

TROPRO

TROPRO 85W MagSafe 2 T-tip AC adapter 15 17 inch

SKU CH-2NCQ-VXZ46

An 85 W MagSafe 2 T-tip adapter delivering 20 V at 4.25 A for 13, 15 and 17 inch MacBook Pro models from 2012 to 2015 with a 70 inch cord

  • TypeAC Adapter
  • Battery Voltage20V
  • AC Adapter Voltage100 V - 240 V
  • AC Adapter Current4.25A
  • AC Adapter Output Power85W
  • FunctionNotebook

Type 85W

  • Charges MacBook Pro 15 and 17 inch models with MagSafe 2 T-tip connector
  • Delivers 85W at 20V 4.25A for stable fast charging across 100-240V input range
  • LED indicator shows power status at a glance
  • 70 inch cord length gives flexible desk or bedside placement
  • Compatible with MacBook Pro 13, 15, 17 inch Retina models from 2012 to 2015

Replacement charger for MacBook Pro 15 & 17 inch

This 85W AC adapter replaces the original MagSafe 2 T-tip charger for MacBook Pro 15 inch and 17 inch models from 2012 through 2015. It supplies 20V at 4.25A from a 100-240V input, matching the factory power specification. A green LED on the connector shows charging status at a glance. The 70 inch cable reaches wall outlets without strain.

Thermals and power draw in normal use

The unit accepts AC 100-240V at 1.5A across 50-60Hz mains and delivers a steady 85W DC output. The supplier notes that the adapter should be kept ventilated so heat can dissipate during charging. No fan or active cooling is present; the enclosure relies on passive airflow. Under typical office loads the brick runs warm but within normal limits for a compact 85W supply.

Behaviour under sustained load

When the connected notebook draws the full 85W continuously, the adapter maintains its 20V 4.25A output without voltage sag. The magnetic T-tip stays firmly seated, preventing intermittent contact during long sessions. Heat rises gradually and stabilises once thermal equilibrium is reached. Users who need more than 85W or a USB-C Power Delivery interface should look elsewhere.

Highlights

  • Charges MacBook Pro 15 and 17 inch models with MagSafe 2 T-tip connector
  • Delivers 85W at 20V 4.25A for stable fast charging across 100-240V input range
  • LED indicator shows power status at a glance
  • 70 inch cord length gives flexible desk or bedside placement
  • Compatible with MacBook Pro 13, 15, 17 inch Retina models from 2012 to 2015

Specifications

BrandTROPRO
TypeAC Adapter
Battery Voltage20V
AC Adapter Voltage100 V - 240 V
AC Adapter Current4.25A
AC Adapter Output Power85W
FunctionNotebook

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Questions about this item

How do I connect the 70 inch cable and the MagSafe 2 T-tip to my MacBook Pro 15 inch, and what step do people often miss?

Plug the AC plug into a 100-240V outlet, then attach the magnetic T-tip to the MacBook Pro 15 inch charging port; the step often missed is keeping the adapter ventilated so heat can dissipate during charging.

Which parts of this 85W adapter will need replacement first with daily use?

The 70 inch DC cable and the MagSafe 2 T-tip connector endure repeated bending and magnetic mating, so they typically wear out before the internal AC-DC circuitry.

What limit appears first when this 85W adapter runs continuously at full 4.25A output?

Sustained 85W output at 20V 4.25A generates heat that the passive enclosure must shed; if ventilation is blocked, thermal protection will throttle or shut down the unit first.

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