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Compact black rectangular AC adapter with cable and barrel connector

usbroway

usbroway AC Adapter Charger for Dynabook Tecra A40-G-BTO, A40-E BTO, A30-E-BTO

SKU CH-CXVE-HK4ZK

A 65 W USB-C power supply delivering 19 V at 3.42 A with worldwide 100-240 V input and over-voltage, short-circuit and over-current protection

  • Battery typeLithium-Ion
  • Safeguards laptop against voltage errors with built-in protection circuits
  • Smart chip ensures 100% compatibility with listed Dynabook Tecra models
  • Worldwide 100-240V input suits international travel and local use
  • Delivers 19V 3.42A 65W output also compatible with 45W requirements
  • CE FCC RoHS certified meeting recognised safety and environmental standards

Replacement AC Adapter for Dynabook Tecra

This 65-watt charger replaces the original power supply for Dynabook Tecra A40-G-BTO, A40-E BTO and A30-E-BTO laptops. It delivers 19 volts at 3.42 amps and includes a smart chip that confirms full compatibility with the notebook’s charging circuit. The unit is brand new and carries CE, FCC and RoHS certification.

Upgrade from a 45-watt charger

The adapter also works where a 45-watt brick was originally supplied, giving extra headroom for simultaneous charging and heavy workloads. Built-in safeguards protect against incorrect voltage, short circuit and internal overheating. It accepts worldwide input from 100 to 240 volts at 50 or 60 hertz, so no separate travel converter is needed.

Steady output during long sessions

Over-voltage, short-circuit and over-current protection circuits keep the power flow stable even when the laptop draws maximum current for extended periods. The charger maintains its rated 19-volt output without thermal throttling thanks to the internal safety design. It is a third-party replacement, not an original Dynabook product, manufactured to match OEM specifications.

How it compares

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

Price $23.99
Cheaper than about 64% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium-Ion

Questions about this item

Does the adapter barrel plug fit the Dynabook Tecra A40-G-BTO charging port?

The adapter is 100% compatible with the original charger for the Dynabook Tecra A40-G-BTO, A40-E BTO, and A30-E-BTO models.

How do I install the adapter, and what mistake should I avoid?

Plug the AC cable into a 100-240VAC 50-60Hz outlet, then connect the barrel tip to the laptop; do not force the connector if the polarity does not match.

When will the adapter need replacement, and what should I check?

Replace the unit if the 19V 3.42A 65W output becomes unstable or if the over-voltage, short-circuit, or over-current protections activate repeatedly.

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