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Compact black AC adapter brick with barrel connector and detachable mains lead

myVolts

myVolts AC Adapter 65W 19V 3.42A for Samsung Galaxy Book Flex Alpha NP730QCJ

SKU CH-4JMK-4VRJR

A 65W 19V 3.42A AC adapter with 100-240V input and built-in safeguards for Samsung Galaxy Book Flex Alpha NP730QCJ models

  • Delivers 65W at 19V 3.42A for reliable charging
  • Auto-adjusting output matches the original Samsung adapter specifications
  • Worldwide 100-240VAC input works on 50-60Hz mains anywhere
  • Built-in over-voltage, short-circuit and over-current protection safeguards the laptop
  • CE, FCC and RoHS certified for safety and compliance

Compatible 65W replacement adapter

This 65-watt AC adapter is built as a direct replacement for the Samsung Galaxy Book Flex Alpha NP730QCJ series. It delivers a fixed 19-volt output at 3.42 amps through a smart-chip interface that identifies the laptop automatically. The unit is designed for owners who need a spare or replacement charger without changing their power routine.

Worldwide 100-240V input with 65W ceiling

The adapter accepts any mains supply from 100 to 240 volts at 50 or 60 hertz, so it works on international travel without a voltage converter. Its 65-watt ceiling matches the original specification, meaning it will sustain full-speed charging while the system runs typical workloads. Demanding tasks that draw more than 65 watts will drain the battery despite the adapter being connected.

Built-in safeguards and one-year coverage

Over-voltage, over-current and short-circuit protection circuits cut power instantly if a fault is detected, protecting both the laptop and the adapter itself. The package includes only the power brick and detachable mains lead; no extra cables, docking tips or software utilities are supplied. A one-year manufacturer warranty covers defects in materials and workmanship.

Highlights

  • Delivers 65W at 19V 3.42A for reliable charging
  • Auto-adjusting output matches the original Samsung adapter specifications
  • Worldwide 100-240VAC input works on 50-60Hz mains anywhere
  • Built-in over-voltage, short-circuit and over-current protection safeguards the laptop
  • CE, FCC and RoHS certified for safety and compliance

Specifications

No published specifications for this item yet.

Questions about this item

Will this 19V 3.42A 65W adapter run my Galaxy Book Flex Alpha NP730QCJ alongside an older charger I keep as a spare?

The adapter auto-adjusts to 19V 3.42A 65W and includes over-voltage, short-circuit and over-current protection, so it safely powers the NP730QCJ without interfering with another supply.

How can I confirm the adapter is working as intended after I plug it in?

The unit delivers 19V at 3.42A up to 65W; when connected the laptop should show charging status and operate normally across the 100-240VAC 50-60Hz input range.

What comes in the box and what must I buy separately?

The package contains the 65W AC adapter with integrated cable; no additional parts are included, and the notebook's original power cord is not required.

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