Handheld gaming has solved the problem of where we can play. Keeping those devices powered is another matter. The Baseus Blade 100W laptop power bank combines a 20,000mAh battery with a remarkably flat design, making it an interesting companion for Steam Deck, ROG Ally and Legion Go owners. But how much difference could it really make, and what should UK buyers check before spending their money?
Why portable power matters to PC gamers
Gaming handhelds are portable computers, and their power demands can be substantial. Screen brightness, frame rate, processor settings, wireless connections and the games themselves all influence battery endurance. A modest indie game may sip power, while a graphically demanding blockbuster can drain the battery far more quickly. An external power bank can extend a session without forcing players to sit beside a socket.
Baseus Blade: key specifications
- Battery: 20,000mAh, approximately 74Wh
- Maximum single-port USB-C output: 100W, subject to device negotiation and cable capability
- Connections: two USB-C and two USB-A
- USB-C input: up to 65W
- Original Blade dimensions: approximately 162 × 134 × 18mm
- Original Blade weight: 506g according to Baseus’s official product comparison (some third-party listings give approximately 490g)
- Display: battery level and charging information
These figures refer to the original 20,000mAh Blade 100W model. The Blade HD is a different, more compact version, so buyers should check the model number rather than assume every Blade listing is identical.
What 100W actually means
The headline 100W figure is a maximum output rating for a compatible USB-C connection, not a promise of 100W continuous charging to every device. USB Power Delivery negotiates an appropriate voltage and current between the power bank and the connected hardware. The original Blade lists a 20V/5A USB-C output profile. To access higher charging power, use a suitable 5A-rated USB-C cable and a device that supports the corresponding input.
Crucially, connecting several devices divides the available power. The original Blade’s documented two-USB-C configuration is rated at 65W plus 30W, rather than 100W on both ports simultaneously. Three-port configurations can divide power further. If you want to charge a handheld and phone together, check the specific port-sharing chart for your model.
Steam Deck compatibility
Valve’s Steam Deck uses a 45W USB-C power supply. On paper, a properly negotiated 100W USB-C PD bank offers ample headroom for the Deck’s charging needs. That does not mean the Deck will draw 100W; it draws what it is designed to accept. A bank with sufficient sustained output can power gameplay and replenish the internal battery when consumption allows.
ROG Ally and Lenovo Legion Go: check the details
Higher-powered Windows handhelds may have more demanding charging requirements, especially when using elevated performance profiles. The Blade’s single-port 100W rating is promising, but that alone cannot guarantee every manufacturer’s maximum performance mode or accessory configuration. Device firmware, USB-C PD profiles, connected docks and simultaneous charging can all matter. Consult the handheld manufacturer’s power-adapter guidance before relying on an external battery as your only charger.
How much extra gameplay does 20,000mAh provide?
The most useful number for comparing power banks is watt-hours, not milliamp-hours alone. The Blade’s 74Wh rating describes stored battery energy. The actual energy reaching a handheld is lower because conversion and charging create losses. As an illustration rather than a test result, if approximately 55–63Wh reaches the device, that energy corresponds to around 2.8–3.2 hours at a steady 20W draw, or 1.4–1.6 hours at 40W. Real results can differ substantially, and these estimates must not be mistaken for independently measured extra runtime. Internal battery charging, variable system load and charging inefficiencies complicate the calculation further.
That distinction is especially important when a product is marketed as a solution for demanding games. More stored energy helps, but it does not override the power consumption of the hardware.
Flat design versus pocketability
The Blade’s defining feature is its shape. At roughly 18mm thick, the original model is designed to lie flat in a backpack or laptop sleeve rather than form a bulky cylinder. That can be genuinely useful in a travel bag already carrying a handheld case, headphones and cables. It is not, however, a featherweight phone charger. At roughly half a kilogram, it is better thought of as luggage-friendly than trouser-pocket friendly.
Charging several devices
Two USB-C and two USB-A connections make the Blade useful beyond a single handheld. A phone, controller, wireless headset or compatible laptop could share the same battery, although every additional device reduces the available energy and may change port output limits. For gaming laptops that demand significantly more than 100W under load, a portable USB-C bank is generally a supplementary power source rather than a replacement for the original AC adapter.
Can you take it on a flight?
At approximately 74Wh, the Blade sits below the widely used 100Wh threshold for many passenger-airline lithium battery rules. That does not guarantee permission on every flight. Power banks generally belong in cabin baggage rather than checked luggage, and individual airlines may impose stricter limits or restrict onboard use. Check the operating airline’s latest rules before travelling.
UK price and value
IGN highlighted a US promotional price of $39.50 on 22 October 2026. That is a US deal, not a verified UK selling price, and promotional stock or discount terms may change. At the time of our research, UK price-comparison listings showed the original Blade from approximately £56.99, while a UK listing for the separate Blade HD showed £64.36. Prices and availability can move quickly, and imported products may carry different delivery charges or warranty terms.
At a competitive price, the Blade makes sense for someone who values a flat profile, four ports and strong single-port USB-C output. Before buying, compare the actual watt-hour capacity, supported charging profiles, port-sharing behaviour, warranty and dimensions against competing Anker and UGREEN models rather than judging by the advertised wattage alone.
Our verdict: a promising accessory, not a tested recommendation
The Baseus Blade has the specifications to be a genuinely useful travel accessory for PC handheld owners. Its slim shape is appealing, the 74Wh capacity is meaningful, and the 100W USB-C capability offers flexibility beyond basic phone charging. But it is not a magic solution to battery life, and a promotional headline should never replace careful compatibility checks.
Coloured Static Press has not received or independently tested this product. This is an editorial hardware overview based on published specifications and retailer information, not a hands-on review. We would particularly like to investigate sustained output, heat, real-world Steam Deck and ROG Ally endurance, and how performance changes when several ports are used.
Featured photograph: Nuno França / Unsplash. Illustrative image, not a photograph of the Baseus Blade.