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Compact black rectangular power adapter with magnetic connector and US plug prongs

NShi

NShi 36W 12V 2.58A Power Adapter for Surface Pro 3/4 US Plug

SKU CH-18E2-7ZYQ8

Replacement 36 W charger with magnetic connector and multi-voltage output for Surface Pro 3 and 4, US plug

  • 36 W output keeps Surface Pro 3 and 4 running at full speed
  • Magnetic connector snaps on securely for reliable charging every time
  • Dual 12 V 2.58 A and 5 V 1 A rails power the tablet and a USB device together
  • 100–240 V input works worldwide without a voltage converter
  • Built-in overcharge, short-circuit, overload and overheat protection guards your device

Replacement adapter for Surface Pro 3 and 4

This 36 W power adapter replaces the original charger for Microsoft Surface Pro 3 and Surface Pro 4 devices. It connects through the magnetic adsorption interface used by those models. The unit accepts AC input from 100 V to 240 V and delivers 12 V at 2.58 A plus a 5 V 1 A rail. Buyers needing a different connector or higher wattage should look elsewhere.

Thermals noise and power draw

The adapter draws up to 36 W from the wall and converts it to the two regulated output rails. Built-in protection circuits guard against overcharge, short circuit, overload and overheat conditions. No fan is present, so operation is silent. Surface temperature will vary with load and ambient conditions.

Protections and plug format

Overcharge, short-circuit, overload and overheat protection are integrated into the adapter itself, requiring no extra software or configuration. The package includes a US-style mains plug for direct connection to North American outlets. No additional cables or accessories are mentioned in the supplied data.

Highlights

  • 36 W output keeps Surface Pro 3 and 4 running at full speed
  • Magnetic connector snaps on securely for reliable charging every time
  • Dual 12 V 2.58 A and 5 V 1 A rails power the tablet and a USB device together
  • 100–240 V input works worldwide without a voltage converter
  • Built-in overcharge, short-circuit, overload and overheat protection guards your device

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the magnetic adsorption interface to my Surface Pro 3 or 4, and which orientation avoids a loose fit?

Align the magnetic connector with the device charging port; the magnets pull it straight in. The step people miss is seating it fully until the indicator light shows solid — a partial click still powers the LED but drops under load.

What part of this adapter is most likely to need replacement after extended daily use?

The detachable AC cord and the magnetic tip see the most mechanical stress. The cord can fray near the brick, and the tip’s spring-loaded pins wear down, causing intermittent charging before the internal 36W circuitry degrades.

At what point does the overheat protection engage during sustained maximum load?

When the brick reaches its internal thermal limit while delivering 12V at 2.58A continuously, the overheat circuit cuts output until the temperature drops, then resets automatically.

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