REVIEW - If you're tired of juggling multiple wall bricks and cords, a single GaN charger that handles a laptop, phone, earbuds, and more sounds ideal. I spent time testing the MFISH E-Rhino 4-in-1 140W GaN charger to see whether it can realistically replace the handful of adapters I usually keep plugged in at my office and in my travel bag.
Price: $54.99
Where to buy: MFISH
What is the MFISH E-Rhino?
The MFISH E-Rhino is a compact 140W GaN charger with four ports: three USB-C and one USB-A. Its top USB-C port is rated up to 140W, the second USB-C up to 100W, the third USB-C 20W, and the USB-A is 22.5W. The max output of the charger is 140W. The unit uses GaN technology to keep size and heat down while delivering high power.
What's in the box (and the optional accessories that I tested)
MFISH E-Rhino travel charger
Manual
MFISH also sent me two of their USB cables: the Armored Dragon 3 140W Y-style cable with a small built-in display and the end of each connector that reports real-time wattage, and a 240W single cable. The Y cable is handy because it can feed two devices from one port, and the display makes it easy to confirm what the charger is delivering.
The Y ends of the cable are USB-C while the connector that plugs into the E-Rhino charger can be converted from USB-A to USB-C (this makes more sense if you watch the video below where I demonstrate the features and performance of the charger and cables).
MFISH also sent me their Gemini Dragon 3 240W cable which features convertable ends. One end converts from USB-A to USB-C and the opposite end converts from Lightning to USB-C.
Specs at a glance
Max output: 140W (total)
Ports: 3× USB-C (140W / 100W / 20W max per port), 1× USB-A (22.5W)
Technology: GaN (Gallium Nitride)
Travel friendly: Foldable prongs
Real-world testing: laptop, phone, and more
I tested the charger with a MacBook Pro, an iPhone 16 Pro Max, AirPods Pro, and a OnePlus 15 Android phone. Tests focused on charging speed, simultaneous charging behavior using the Y cable, and whether the charger got uncomfortably warm.
MacBook Pro (single-device test)
Starting with the MacBook Pro at 40%, I used the 2-in-1 display cable and plugged the charger into a wall outlet. The cable showed 79–81W while charging. After 15 minutes the MacBook reached 68% (up 28%), and at 30 minutes it was 85% That's about a 45% increase in half an hour. The charger temperature hovered around the mid-90s °F (about 96.5°F after the test), warm to the touch but not hot at all.
Simultaneous charging: laptop + Android phone
Next I used the Y cable to charge my MacBook and the OnePlus 15 at the same time from the 140W port. After 30 minutes the phone went from 56% to 73% and the laptop reached 96%. The charger temperature remained modest (around 94.5°F after unplugging). This is where the GaN charger shines: high power density and efficient delivery even when splitting output between devices.
iPhone 16 Pro Max fast charge test
With the iPhone at 23%, I plugged it into the charger and checked the results at 10 and 30 minutes. At 10 minutes it hit 55%. A very quick top-up and at 30 minutes it was 69%. During this test the charger stayed cool-ish, rising only to about 87.5°F. For small devices the 140W GaN charger supplies plenty of headroom for fast-charging profiles without overheating.
Replacing multiple adapters: how practical is it?
The short answer: yes, but I needed one extra cable in order to charge four devices. I replaced four separate adapters (for laptop, phone, AirPods, etc.) with the single E-Rhino plus two MFISH cables and one additional cable for my AirPods Pro earbuds. That meant one wall outlet used instead of four, fewer cables, and less bulk to carry.
The weight surprised me because the combined weight of my original adapters and cables versus the single MFISH GaN charger and cables was nearly the same. However, the GaN charger is far less bulky and far more convenient. Requiring just one outlet is a practical win in hotels, airports, and crowded power strips.
See it in action
What I like about the MFISH E-Rhino travel charger
High power output in a compact GaN charger form factor.
Useful port distribution (140W top port + two secondary ports + USB-A).
Y cable with a built-in display is convenient for monitoring real-time wattage.
Foldable prongs and reduced bulk make it travel-friendly.
Reasonable thermals under load. Warm but not hot.
What could be improved
The unit’s graphics are subjective; some may prefer a less flashy finish.
Final thoughts
The MFISH E-Rhino 140W GaN charger is an excellent single-adapter solution for people who carry multiple devices. It charged a MacBook Pro or any USB-C laptop and other devices simultaneously with fast results, delivered impressively fast top-ups to an iPhone, Android phone and remained only mildly warm thanks to GaN efficiency. If you want to reduce outlet clutter and travel with less bulk, a 140W GaN charger like the MFISH E-Rhino is definitely worth considering.
Price: $54.99
Where to buy: MFISH
Source: The sample for this review was provided by MFISH. They did not have a final say on the review and did not preview the review before it was published.
