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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.

How it compares

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

Price $36.99
Pricier than about 66% of the 27,790 comparable items (median $30.99).

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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