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In-depth review

Tessan 100W GaN Universal Travel Adapter (TS-WTA04) Review (2027)

In-depth review of the Tessan 100W GaN travel adapter: full-speed laptop charging, five-device capacity, 200-plus country coverage, and limits.

TGBy TrueGear Research TeamIndependent editorial teamLast updated How we researchResearch-based assessment · Universal Travel Adapters (2027)
Specs verified against manufacturer docs
No paid placements
Independently funded by readers
Updated 2026-10-28
Tessan 100W GaN Universal Travel Adapter (TS-WTA04) Review (2027) featured graphic
Tessan 100W GaN Universal Travel Adapter (TS-WTA04)

Tessan 100W GaN Universal Travel Adapter (TS-WTA04)

A 100W GaN adapter that fast-charges a work laptop and four more devices in 200-plus countries.

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Our verdict

The Tessan 100W GaN is the business-travel end of the universal adapter category: enough USB-C power for a real work laptop, four more charging points for the rest of the kit, and plug sliders for 200-plus countries in a 0.62 lb body. Shared wattage and a single AC outlet are the honest trade-offs.

What we like

  • 100W total GaN output gives a work laptop full-speed charging from one USB-C port
  • Two USB-C and two USB-A ports plus a universal AC outlet charge five devices at once
  • Sliders cover Type C, G, A, and I plugs across 200-plus countries
  • Double fuse protection in a 0.62 lb body that lives in a laptop bag

What to watch out for

  • The 100W is shared when several ports are loaded at once
  • One AC outlet only, so plug-in gear competes for a single socket
  • Not a voltage converter; dual-voltage devices only on the AC outlet

What owners report: Tessan 100W GaN Universal Travel Adapter (TS-WTA04)

Synthesized from recurring themes in long-term owner feedback.

Most praised

  • Business travelers praise one adapter that fast-charges the laptop and still has ports for the phone and tablet
  • The sliders and sockets feel secure in worn hotel outlets, per frequent flyer feedback
  • GaN keeps the body compact for the wattage, so it stays in the carry-on permanently

Common complaints

  • Shared wattage means a laptop plus a fast-charging phone splits the headline 100W
  • The single AC outlet is spoken for quickly on gear-heavy trips
  • First-time users must remember it adapts plugs only and does not convert voltage

Who it is for

Business and laptop-first travelers who charge a full work kit from one hotel outlet, in several countries per trip.

Charging power

The GaN design delivers up to 100W from its USB-C ports, enough for full-speed charging on most work laptops, with two USB-C and two USB-A ports in total. Load several ports at once and the wattage is shared, which is normal for the class and worth planning around on heavy nights.

Coverage and build

Sliders present Type C, G, A, and I plugs covering 200-plus countries, and double fuse protection guards the electronics behind them. At 0.62 lb it is light for its output class, and the body is sized to live in a laptop bag rather than checked luggage.

The adapter caveat

Like every universal adapter, this unit changes plug shape, not voltage. The AC outlet passes through local voltage, so anything plugged into it must be dual-voltage. The USB ports, by contrast, output device-safe power anywhere in the world.

Key specifications

Total output
100W GaN
USB ports
2 USB-C, 2 USB-A at 18W
AC outlets
1 universal AC outlet
Coverage
Type C, G, A, I plugs, 200+ countries
Weight
0.62 lb
Model
TS-WTA04

Sources: Desertcart product listing, Retailer product listing

Also consider

Research-based assessment. TrueGear has not hands-on tested this product; this evaluation synthesizes manufacturer specifications, retailer documentation, and published expert reviews.

Questions, answered

Does the Tessan 100W convert voltage?

No. It adapts plug shapes and provides USB power; the AC outlet passes local voltage through, so only dual-voltage devices belong on it.

How many devices can it charge at once?

Five: two USB-C devices, two USB-A devices, and one device on the AC outlet, with the 100W shared across the USB ports.

Which countries does it cover?

Type C, G, A, and I sliders cover 200-plus countries, including Europe, the UK, the US, and Australia.

Every guide on Universal Travel Adapters (2027)14 pages