Update: The Mokin GP140B charges a laptop at up to 140W from a single USB-C port and powers four devices at once, with a live display showing every watt. I’ve added Mokin’s per-port output chart, a worked charging-time example, what a 140W cable needs, and a travel kit comparison.
I travel quite a bit, and one thing that always seems to pile up in my backpack is charging gear. Between my MacBook, my work laptop, my phone, my iPad Mini, and other electronics, I usually end up carrying multiple chargers and cables.
After using the Mokin 140W 4-Port GaN USB-C Charger, it’s become the one charger I reach for most often.
In this Mokin 140W charger review, I’ll cover the specs, what I charged with it, the built-in display, how it works for travel, the pros and cons, and who it’s for.
Products Used in My Mokin Charger Video
👉 Mokin 140W 4-Port GaN USB-C Charger
For business inquiries and collaborations: luisangel@aemind.com
Affiliate Disclosure: I was sent this product by the manufacturer to review. If you purchase an item through the links provided, I may receive a commission, at no additional cost to you. Thank you for supporting the channel.
What Is the Mokin 140W Charger?
The Mokin 140W Charger (model GP140B) is a compact GaN wall charger with four ports: three USB-C and one USB-A. It supports PD 3.1 fast charging up to 140W and has a built-in color display that shows charging status, per-port power, and temperature.
Key Specs and Features
- 140W PD 3.1 fast charging
- 4 ports: 3 USB-C and 1 USB-A
- Charge up to 4 devices at the same time
- Built-in display with real-time power monitoring
- Temperature monitoring
- Compact GaN design (about 287 g, per the listing)
- Includes a 140W USB-C to USB-C cable
- 1-year warranty
Mokin 140W (GP140B) Port Output Chart
Mokin publishes these output profiles for the GP140B:
| Port | Max output | Voltage profiles |
|---|---|---|
| USB-C1 | 140W | 5V/9V/12V/15V 3A, 20V 5A (100W), 28V 5A (140W); PPS 5–21V up to 100W |
| USB-C2 | 140W | Same as USB-C1 |
| USB-C3 | 30W | 5V 3A, 9V 3A, 12V 2.5A, 15V 2A, 20V 1.5A; PPS 5–11V |
| USB-A | 22.5W | 5V 3A, 9V 2A, 10V 2.25A, 12V 1.5A |
| Total | 140W | Shared automatically across active ports |
| Input | — | 100–240V AC, 50/60 Hz, 2.5A max |
The takeaway: plug your laptop into USB-C1 or USB-C2, your phone or tablet into USB-C3, and earbuds or a watch into USB-A.
How I Used It: One Charger for Everything
In my testing, I charged my MacBook, my work laptop, my iPad Mini, my phone, and even a powered screwdriver with this charger. Instead of packing several charging bricks, I was able to consolidate everything into a single charger.
What 140W Charging Needs: PD 3.1 and the Right Cable
USB Power Delivery 3.1 added Extended Power Range (EPR), which raises USB-C charging above 100W using a 28V profile. At 28V × 5A, that’s the 140W the Mokin delivers on its top ports. To get it, three things need to line up:
- A device that accepts 140W over USB-C, such as a 16-inch MacBook Pro that supports 140W fast charging.
- A 5A, EPR-rated USB-C cable. The included 140W cable is the one to use; a basic 60W cable caps you at 60W.
- The laptop on USB-C1 or USB-C2, ideally with other ports lightly loaded.
The display makes this easy to confirm. If it reads close to 140W on your laptop port, you’re fast charging. If it reads 60W, swap the cable.
The Built-In Display
One feature I really like is the built-in display. It shows real-time power use and lets you see how much power each connected device is drawing. In the video, I switch through the different display screens and show the power draw for each port.
That’s more useful than it sounds. You can see whether your laptop is actually fast charging, and you get a quick sense of how the 140W is being shared between devices.
Worked Example: How Fast Does It Charge a MacBook?
Mokin says the GP140B charges a 16-inch MacBook Pro to 50% in about 25 minutes. Here’s the math behind a claim like that, using Apple’s 100Wh battery rating for the 16-inch MacBook Pro:
| Step | Math | Result |
|---|---|---|
| Energy for 0–50% | 100Wh × 0.5 | 50Wh |
| Delivered at an average of ~120W | 50Wh ÷ 120W | ~25 minutes |
| Laptop on a 65W charger instead | 50Wh ÷ 60W | ~50 minutes |
That’s the real benefit of a 140W brick: the first half of the battery comes back during a coffee break. Smaller devices finish fast too. A phone on the 30W USB-C3 port hits its own fast-charge limit long before the charger does.
Great for Travel
For travel, this has been especially useful because it cuts down on clutter in my backpack while still giving me enough power for multiple devices at once. Even with up to 140W of output, the charger stays compact enough to throw into a laptop bag or carry-on.
One Charger vs My Old Travel Kit
| Device | Old setup | With the Mokin |
|---|---|---|
| MacBook | Laptop brick | USB-C1, up to 140W |
| Work laptop | Second laptop brick | USB-C2 (shares the 140W total) |
| iPad Mini | Small USB-C charger | USB-C3, up to 30W |
| Phone | Phone charger | USB-C3 or USB-A |
| Earbuds or watch | Extra cable and charger | USB-A, up to 22.5W |
Four bricks become one, and the 100–240V input means it works on hotel power almost anywhere with just a plug adapter. My 110 vs 220 volt guide explains why chargers labeled 100–240V travel so easily.
What’s in the Box
According to the listing, you get the 140W 4-port GaN charger, a 140W USB-C to USB-C cable, and a user manual.
Mokin 140W Charger Pros and Cons
Pros
- Replaced several chargers in my travel bag
- 140W PD 3.1 with four ports
- Live display shows per-port power and temperature
- Compact GaN design
- Includes a 140W USB-C cable
Cons
- The 140W total is shared when several devices are plugged in
- 1-year warranty
- Wall charger only, so you’ll still need a car charger or power bank on the road
Pairing It With a Power Bank or Power Station
A wall charger covers hotel rooms and airport lounges. For long flights, trains and outdoor days, pair it with a battery. My Anker SOLIX C200 DC review covers a 192Wh pack with a 140W two-way USB-C port, and the Mokin can recharge it at full speed overnight. For phones only, see my LOVELEDI 15,000mAh power bank review.
Who Is It For?
I think the Mokin 140W Charger is a great fit for:
- Frequent travelers carrying a laptop, tablet, and phone
- MacBook users who want fast charging and extra ports
- Remote workers juggling a work laptop and a personal laptop
- Anyone who wants to see exactly how much power each device draws
Frequently Asked Questions
How many devices can the Mokin 140W charger charge at once?
Up to four, using its three USB-C ports and one USB-A port.
Can it charge a MacBook?
Yes. I charged my MacBook with it, and it supports PD 3.1 up to 140W.
What does the display show?
Real-time charging status, power output for each port, and temperature.
Does it come with a cable?
Yes, a 140W USB-C to USB-C cable is included.
What is the Mokin 140W charger model number?
GP140B.
Which Mokin ports deliver 140W?
USB-C1 and USB-C2, up to 140W each when used alone. USB-C3 is 30W and USB-A is 22.5W.
Do I need a special cable for 140W?
Yes. Use a 5A, 240W/EPR-rated USB-C cable, like the included 140W cable.
Does the Mokin work outside the US?
Its input is rated 100–240V, 50/60 Hz, so it works worldwide with the right plug adapter.
Final Verdict
If you’re constantly traveling with multiple devices and want to simplify your charging setup, the Mokin 140W 4-Port GaN USB-C Charger does a great job replacing several charging bricks with one compact unit. The live display is the feature that sets it apart.
Watch My Mokin 140W Charger Review
In my video, I charge my MacBook, work laptop, iPad Mini, and phone with the Mokin 140W Charger and walk through the display. You can watch the full video on my YouTube channel, Ryzzun Reviews:
▶ Mokin 140w Charger Review (Replaced My Entire Travel Charging Macbook Kit)
👉 Mokin 140W 4-Port GaN USB-C Charger
For business inquiries and collaborations: luisangel@aemind.com
I was sent this product by the manufacturer to review. If you purchase an item through the links provided, I may receive a commission. Thank you for supporting the channel.
Sources: Mokin GP140B product listings; USB-IF USB Power Delivery 3.1 specification; Apple MacBook Pro tech specs (accessed Oct 2026).