Anker SOLIX C300 vs EcoFlow RIVER 2: which compact power station wins?

Display

Neither product is sold as a premium screen-first device, so this category is really about usability rather than display quality. The EcoFlow RIVER 2 has the more established app ecosystem and a straightforward front-panel interface, which makes it easy to check input, output, and battery status quickly. The Anker SOLIX C300 is also simple to read and use, but Anker’s newer interface tends to feel a little more polished and modern. Winner: Anker SOLIX C300, because the overall user interface and product presentation feel slightly more refined, even though both are perfectly functional.

Performance

This is where the EcoFlow RIVER 2 has the headline advantage. It offers up to 600W output, which is far higher than the Anker’s 300W continuous output (600W surge). That means the EcoFlow can run a wider range of small appliances and higher-draw devices, such as some laptop chargers, small kitchen gadgets, and certain portable tools, with more headroom. The Anker SOLIX C300 is still capable for phones, tablets, lights, cameras, routers, and most low-power camping kit, but its 300W ceiling is more restrictive. Winner: EcoFlow RIVER 2, clearly, for raw output capability.

Build quality and design

Both are built around LiFePO4 chemistry, which is the right choice for longevity, safety, and UK household use. LiFePO4 typically delivers more charge cycles and better thermal stability than NMC batteries, so both products should age better than older lithium-ion designs. The Anker has the advantage in battery capacity at 288Wh versus 256Wh, and that extra reserve gives it a small practical edge for longer sessions between charges. Design-wise, Anker products often feel a bit more compact and thoughtfully packaged, while EcoFlow tends to prioritise performance and charging speed. Winner: Anker SOLIX C300, because it combines slightly higher capacity with a strong reputation for tidy, durable design.

Battery life

Battery life here is not just about chemistry, but usable capacity and efficiency. The Anker’s 288Wh battery gives it about 12.5% more stored energy than the EcoFlow’s 256Wh, which is enough to matter in real use. For example, if you are charging phones, running LED lights, or powering a Wi-Fi router during a short outage, that extra capacity can translate into more runtime or one more device charge. EcoFlow’s advantage is faster replenishment, with its 1-hour fast charging claim meaning it gets back into action more quickly. Winner: Anker SOLIX C300 for longer runtime per charge, EcoFlow RIVER 2 for faster turnaround. Overall winner: Anker, because capacity is fixed and extra Wh usually matter more than recharge speed for renters and campers.

Price and value for money

The price gap is tiny: the EcoFlow is £3.90 cheaper at £219.00 versus £222.90 for the Anker. That difference is too small to drive the decision on price alone. If you value higher output and faster recharge, EcoFlow offers excellent value. If you value a bit more battery capacity and a more rounded compact setup, the Anker is also strong value. Winner: tie, because the price difference is negligible and both are competitively priced.

Features and ecosystem

This is where the choice becomes more practical than technical. EcoFlow’s RIVER 2 line is well known for fast AC charging and a strong app experience, and the 600W output gives it broader compatibility with everyday devices. Anker’s SOLIX C300 stands out for its 140W two-way fast charging, which is a meaningful convenience feature if you want rapid top-ups and a more versatile charging workflow. For camping and travel, the Anker’s slightly higher capacity and efficient charging make it feel more self-contained, while EcoFlow’s higher output makes it better for users who want to power more demanding kit. Winner: tie, because each brand wins in a different way: Anker for charging flexibility, EcoFlow for output headroom.

Overall user experience

For most UK buyers, the real question is how you’ll use it. If you want a compact emergency battery for phones, laptops, lights, cameras, and occasional backup power, the Anker SOLIX C300 is the more balanced choice thanks to its 288Wh capacity and polished design. If you need the most power possible from a similarly sized unit and want to run more demanding devices, the EcoFlow RIVER 2 is the more capable performer. Both are sensible LiFePO4 choices, but the Anker feels better suited to general-purpose portability, while the EcoFlow is more output-focused.

Overall summary: the Anker SOLIX C300 is the better all-round buy for most people because it offers more battery capacity, excellent fast charging, and a slightly more refined compact-package experience for only £3.90 more. The EcoFlow RIVER 2 wins on maximum output and is the better pick if you specifically need the 600W ceiling. If you want the safest default recommendation, buy the Anker. If your priority is powering more demanding devices, buy the EcoFlow.