A 100W GaN charger is the sweet spot for powering a laptop, tablet and phone from a single, pocketable brick. This guide rounds up three strong picks for UK buyers, two 100W bricks plus a 140W step-up for hungrier laptops, comparing ports, single-port output and everyday practicality so you can pick the right one for your kit.
Top picks
1. Anker 100W USB C Charger (3-Port GaN, Smart Display) - Best Overall
SPP Score: 8.0 / 10 - 100W output, 3-port layout, compact GaN build. Our all-round pick.
Capability 9/10 - Versatility 5/10 - Build 10/10 - Value 8/10
The Anker 100W is our standout because it pairs serious single-port output with genuine real-world usefulness. The built-in smart display shows live wattage so you can see exactly how power is being split across the two USB-C ports and one USB-A port, and GaN internals keep the whole thing compact enough to live in a bag. For most people charging a laptop plus a couple of accessories, this hits the right balance of power, ports and footprint.
Pros
- ✓ Delivers up to 100W from a single USB-C port, enough for most USB-C laptops
- ✓ Smart display shows live output, so you can confirm fast charging at a glance
- ✓ Three ports (2x USB-C, 1x USB-A) cover laptop, phone and a legacy device together
Cons
- ✗ The smart display adds a little bulk versus a bare three-port brick
- ✗ A USB-C cable rated for full output may need to be supplied separately
Who it's for: Anyone who wants one charger to handle a laptop and accessories with clear feedback on what's being delivered. Who it's not for: Minimalists who only ever charge a single phone and don't need the display or extra ports.
2. UGREEN Nexode 100W USB C Charger 4-Port GaN - Best Budget
SPP Score: 8.1 / 10 - 100W output, 4-port layout, compact GaN build. Our value pick.
Capability 9/10 - Versatility 6/10 - Build 9/10 - Value 8/10
The UGREEN Nexode 100W wins this trio on port count, and that's exactly the point of it. With four ports (three USB-C plus one USB-A) and a foldable UK plug, it is built for travelling light while still keeping a full set of devices topped up. GaN technology keeps it compact, and the single port can still push up to 100W when you need maximum speed for a laptop.
Pros
- ✓ Four ports (3x USB-C, 1x USB-A) charge more devices at once than most rivals
- ✓ Foldable UK plug makes it tidy and travel-friendly
- ✓ Up to 100W from a single port covers demanding USB-C laptops
Cons
- ✗ Full 100W is shared once several ports are in use, so per-device speed drops
- ✗ No live display to show how power is being distributed
Who it's for: Households or travellers who need to charge several devices from one wall socket. Who it's not for: Buyers who want a power readout or only ever charge one device at a time.
3. Anker 140W 4-Port GaN Charger (Smart Display) - Best Premium
SPP Score: 8.4 / 10 - 140W PD 3.1 output, 4-port layout, smart display. Our pick for maximum capability.
Capability 10/10 - Versatility 6/10 - Build 9/10 - Value 8/10
This is the step past the 100W class. The Anker 140W can push its full output through a single USB-C port using PD 3.1, which is what a 16-inch MacBook Pro needs to charge at the speed its own brick manages. You get four ports (three USB-C plus one USB-A) against the overall pick's three, and the smart-display idea grows into a small touchscreen with touch controls showing live output. If your laptop is the hungry kind, this is the one brick in the guide that never holds it back.
Pros
- ✓ 140W single-port output (PD 3.1) charges laptops the 100W class can't feed at full speed
- ✓ Four ports (3x USB-C, 1x USB-A) run a whole desk's devices from one socket
- ✓ Touchscreen with touch controls shows live output, so you can see where the power is going
Cons
- ✗ Full 140W only flows when a single high-draw laptop has the output to itself
- ✗ Overkill if nothing you own charges above 100W - the overall pick does that job for less
Who it's for: Owners of 140W-class laptops, and multi-device desks that want headroom a 100W brick can't give. Who it's not for: Anyone whose biggest device tops out at or below 100W.
Quick verdict
For most people the Anker 100W USB C Charger (3-Port GaN, Smart Display) is the one to get, blending 100W single-port output, a useful live display and a compact three-port layout. If you want to cover more devices at once with a travel-friendly foldable plug, the UGREEN Nexode 100W USB C Charger 4-Port GaN is the sensible-value choice. If your laptop can draw more than 100W, or you want a fourth port and real headroom, step up to the Anker 140W 4-Port GaN Charger (Smart Display). Buying for a Mac specifically? Our MacBook Pro charger guide matches wattage to each model.
How we chose
The 100W class is crowded, so we compared what actually separates these three: real single-port wattage (up to 140W on the premium pick), the number and mix of USB-C and USB-A ports, the efficiency and compactness that GaN technology brings, and practical UK details like a foldable plug. We weighed everyday usefulness and overall value rather than headline numbers alone. Each one links to its Amazon UK listing, where you can check the current price and confirm the port mix suits your kit.
FAQ
Q: What does GaN mean and why does it matter? A: GaN (gallium nitride) lets chargers run cooler and smaller than older silicon designs, so a 100W brick stays compact enough to carry every day without sacrificing output.
Q: Can a 100W GaN charger charge my laptop? A: Most USB-C laptops charge fine from a 100W single port, but check your laptop's required wattage first, as a few high-performance machines ask for more than 100W - which is exactly the job our 140W premium pick exists for.
Q: Do I need a special cable to get the full 100W? A: Yes, you need a USB-C to USB-C cable rated for 100W (5A) with the right standards; a thin or low-rated cable will cap your charging speed regardless of the charger.
Affiliate disclosure: This page contains affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. See our disclosure page for details.