Anker vs UGREEN Charging: The GaN Brick Worth Carrying

A decade ago, a charger capable of pushing 100W to a laptop was the size of a small brick and generated enough heat to feel genuinely warm through a jacket pocket. Today, both Anker and UGREEN sell 100W chargers smaller than a stack of playing cards, and the reason is one material change: gallium nitride, or GaN, replacing the silicon that’s done this job since the mains adapter was invented. Both brands have built entire flagship charger ranges around that one component swap — Anker’s Prime and Nano series, UGREEN’s Nexode line — and the marketing from both sounds nearly identical. Worth working out what, if anything, actually separates them once the shared GaN story is set aside.

The promise, and the real material behind it

Silicon-based power transistors, the switching components inside every charger that convert mains AC into the DC a device wants, have a hard physical ceiling on how fast they can switch and how hot they run doing it. Gallium nitride is a wide-bandgap semiconductor that switches faster and wastes less energy as heat at the same power level, which means the transformer and heatsink around it can shrink dramatically for the same wattage. That’s a real, independently verifiable materials fact, not a marketing invention — GaN’s switching efficiency advantage over silicon is well established in power electronics research and is the same underlying reason GaN has also taken over in electric vehicle charging and data centre power supplies, not just phone chargers.

Both Anker and UGREEN are selling that same physics. The promise is identical on both boxes: a charger small enough to live permanently in a bag, powerful enough to charge a laptop and a phone simultaneously without either slowing down, and cool enough to trust jammed into a pocket next to other things. Where the two brands diverge is in what they build around that shared transistor technology.

Where Anker’s range differentiates

Anker’s flagship Prime series pairs its GaN transistors with what the brand calls GaNPrime — an active power-distribution system that dynamically reallocates wattage between however many ports are in use, rather than fixing a static maximum per port. Plug in only a phone and it gets a larger share of the total budget; add a laptop demanding more, and the charger’s firmware renegotiates the split in real time. The higher-wattage Prime models (100W and 140W multi-port chargers) also carry a small display — a genuinely unusual inclusion for a charger — showing live wattage draw per port, which is a legitimately useful diagnostic rather than a gimmick: it’s the only way to actually see whether a cable, port or connected device is the bottleneck in a given charging session, something that’s otherwise invisible on any charger.

Anker’s build quality on this range leans toward a slightly warmer, matte-finish shell with rounded edges, and the brand publishes real cycle and thermal-safety certifications for the series consistent with its long track record — Anker has been building battery and charging hardware since 2011 and its failure-rate reputation in independent teardown and safety-testing circles is generally strong for the higher-end lines specifically, less so for its oldest budget models from years back, which used less rigorously specified cells and switching components.

Where UGREEN’s range differentiates

UGREEN’s Nexode series takes a more purely engineering-led approach to the same problem: rather than a display, the differentiation is aggressive miniaturisation and, on several models, foldable prongs as standard even on the higher-wattage units — a genuinely useful detail for anyone actually carrying the thing daily, since a fixed metal prong is the single most common reason a “compact” charger still doesn’t sit flat in a bag pocket. UGREEN’s multi-port models use their own dynamic power-sharing logic, functionally similar in outcome to Anker’s GaNPrime even though UGREEN doesn’t brand it with the same marketing weight, splitting the wattage budget across active ports rather than hard-capping each one.

UGREEN is the newer entrant to premium charging specifically — the brand built its early reputation on cables and simpler accessories before investing seriously in the GaN charger category — and its build quality on the Nexode line has closed that gap convincingly according to independent teardown and safety-testing coverage, though it carries a shorter track record simply by virtue of having fewer years and fewer units in the field than Anker’s charging division. That’s not a defect, just a genuinely different amount of accumulated field data behind each brand’s reliability claims.

The teardown story: where both cut corners, and where neither does

Independent teardowns of both brands’ top-tier multi-port GaN chargers have found broadly comparable component quality where it matters most for safety: proper isolation between the mains side and the low-voltage output side, adequate creepage distances on the PCB, and real over-current, over-voltage and thermal protection circuitry rather than the bare minimum needed to pass a compliance test cheaply. This is worth stating plainly because it’s the one area where a genuinely dangerous corner-cut would matter far more than any feature difference — a mains-isolated charger from either brand’s flagship range is not the place either has chosen to cut costs, and that shows in both continuing to earn UL, CE and equivalent safety certifications without the recalls that have periodically hit cheaper unbranded GaN chargers sold on marketplaces with no real safety testing behind them at all.

Where the two brands’ cost genuinely goes differently is capacitor and inductor grade in the power- sharing circuitry that handles multiple simultaneous high-power ports — the part of the design that determines whether wattage actually holds steady under a full multi-device load rather than degrading gracefully or, in a poorly engineered budget design, tripping a protection circuit and cutting a port entirely. Both brands’ flagship multi-port models have been shown in independent combined-load reviews to hold their rated output close to spec under simultaneous multi-device charging; it’s the third-tier budget GaN chargers from smaller, less accountable brands — not Anker’s or UGREEN’s own entry ranges, which still carry real engineering behind them — where that corner most often gets cut.

The cable is half the charger, and neither brand can fix that for you

A genuine limitation that applies equally to both brands and rarely gets mentioned in the marketing for either: a GaN charger rated at 100W cannot deliver anything close to that figure through a cable that isn’t built for it. USB-C cables above 60W require an e-marker chip — a small identity chip embedded in the cable itself that negotiates the higher power contract with both ends — and a cable without one, however sturdy it looks, silently caps the connection at 60W or lower regardless of what the charger and device could otherwise agree to. Neither Anker nor UGREEN can put that fix inside their own charger; it lives in whichever cable actually ends up in the box or gets swapped in from a drawer of mismatched cables later. Both brands sell their own e-marked cables rated to match their top-tier chargers, and buying the charger without also checking the cable is the single most common way either brand’s 100W-plus hardware quietly underperforms in the real world — not because the charger failed to deliver, but because the cable was never asked to carry more than 60W in the first place.

Travel plugs and the UK-specific wrinkle

For a UK buyer specifically, it’s worth checking whether a given model ships with a native UK three-pin plug or a two-pin Europlug bundled with an adapter, since some of both brands’ ranges are sold primarily in EU or US plug configurations with the UK version as a separate SKU or a bundled adapter rather than a native fit. A charger with a folding or interchangeable plug system — increasingly common across both ranges’ higher-end models — sidesteps this entirely and is worth the small premium for anyone who travels for work, since it removes the adapter as one more thing to pack and one more point of failure at the wall.

Did either fix what the last generation got wrong?

The generation before GaN’s mainstream arrival — bulky silicon-based multi-port chargers from both brands circa the late 2010s — had two well-documented, genuine complaints: they ran hot enough under sustained multi-port load to be uncomfortable to touch, and fixed per-port wattage caps meant a laptop and a phone charging together often left the laptop charging slower than it would alone, even though the charger’s total rated wattage had headroom to spare. Both brands’ current GaN flagships directly address both complaints — dynamic power-sharing was built specifically to solve the second problem, and GaN’s efficiency directly solves the first. This is a case where “the newer generation” genuinely earns that description rather than just changing the badge, on both sides of this comparison.

The verdict

Buy either brand’s flagship multi-port GaN charger over anything from either brand’s older silicon-based range, or from an unbranded marketplace GaN charger with no independent safety testing behind it — the safety-certification gap there is the one that actually matters. Between Anker and UGREEN specifically, buy Anker’s Prime series if the live wattage display and the brand’s longer accumulated safety track record matter to you; buy UGREEN’s Nexode series if foldable prongs and the smallest possible footprint for the wattage matter more, since UGREEN’s miniaturisation is, model for model, usually the tighter package for the same power figure.

The price verdict: a genuine 100W-class GaN multi-port charger from either brand typically runs £50–£80, which is worth paying over a £15–£20 unbranded GaN charger specifically because of the safety-certification and combined-load-reliability gap documented above — this is one of the few gadget categories where the cheap option carries a real, not just theoretical, safety risk if sourced from an untested marketplace brand. It is not worth paying a further premium chasing 140W+ if your actual device roster tops out at a 65W laptop and a phone; buy to your device wattage, not the ceiling.

Who it’s for: anyone charging a laptop, a phone and possibly a tablet from one plug daily, whether at a desk or on the move, and anyone who has already been caught out by a bulky old silicon charger hogging a whole under-desk power strip. The GaN size and weight saving genuinely changes how willing you are to carry a charger at all rather than leaving devices to trickle-charge overnight, and that behavioural shift is arguably the more useful outcome than any spec on the box. Who should skip the premium tier: anyone charging only a phone, for whom a simple 20–30W single-port GaN charger from either brand does the whole job for a third of the price. For the hub half of the same desk-cable-reduction problem, see our look at USB-C hubs and the chipset lottery, and for what happens when a hub’s own power-passthrough circuitry is the weak link rather than the wall charger, see powered USB hubs and why yours keeps dropping devices.