Display

The Anker SOLIX C1000 has the stronger user experience straight away because it is a full-featured power station with a proper status display, app monitoring, and more detailed visibility into input/output, battery percentage, and charging state. That matters when you are managing loads during a power cut or trying to optimise solar charging on a balcony or in a garden. The Powkey is much more basic: it typically offers a simpler readout, which is fine for charging a phone or lantern, but not ideal when you need confidence about remaining runtime. Winner: Anker SOLIX C1000.

Performance

This is not a close contest. The Anker delivers 1800W continuous output with a 2400W peak, which means it can handle far more demanding devices such as kettles within reason, laptops, routers, CPAP machines, small heaters only with caution, and many kitchen appliances. Its 1056Wh LiFePO4 battery gives it real usable capacity for outages and extended camping. The Powkey is rated at 100W with a 99Wh battery, which is essentially a large pocket-sized backup pack rather than a true power station. It can charge phones, tablets, cameras, and maybe run very low-draw DC/USB devices, but it is nowhere near capable of supporting household appliances. Winner: Anker SOLIX C1000 by a massive margin.

Build quality and design

Anker again feels like the premium product. The SOLIX C1000 uses LiFePO4 chemistry, which is the right choice for longevity, thermal stability, and frequent cycling; this is important if you plan to use it regularly for home backup or solar self-consumption. Anker’s design is also more robust and more suited to serious use, with sensible port selection, better thermal management, and a reputation for stronger engineering. Powkey’s orange 99Wh unit is lightweight and easy to carry, which is a plus for travel and fishing trips, but it is clearly built to a cost and lacks the heavy-duty feel of the Anker. For anything beyond casual use, the Anker’s construction is in a different league. Winner: Anker SOLIX C1000.

Battery life

Battery life here should be judged in watt-hours, not marketing claims. The Anker’s 1056Wh capacity is over ten times larger than the Powkey’s 99Wh pack, so it can power devices for dramatically longer periods. As a rough practical example, the Anker can keep a 50W load going for many hours, whereas the Powkey is better thought of as a short-term top-up source for small electronics. The Powkey’s 99Wh size is also airline-friendly in many cases, which is useful for travel, but that same compactness is exactly why it cannot compete on runtime. If you want to survive a meaningful outage or run a campsite setup for more than a few hours, the Anker wins easily. Winner: Anker SOLIX C1000.

Price and value for money

This is the one area where the Powkey has a clear advantage. At £80.99, it is far cheaper than the Anker’s £599 price, and for users who only need to charge phones, earbuds, a tablet, or a small lamp, it may be perfectly adequate. However, value is about what you get for the money, not just the lowest sticker price. The Anker costs £518.01 more, but it also delivers vastly more capacity, far higher output, LiFePO4 longevity, and genuine home-backup usefulness. If you need a true power station, the Anker is better value despite the higher price. If your needs are tiny, the Powkey is the cheaper fit. Winner: Tie, depending on use case, but Anker for serious users and Powkey for minimalists.

Game library/features

Interpreting this as features and versatility, the Anker wins decisively. It offers a much broader practical feature set: high AC output, multiple charging paths, likely app-based monitoring, solar input compatibility, and enough power to support several devices at once. It is the sort of unit that can be integrated into a sensible home emergency plan or used as a proper off-grid companion. The Powkey has the basics: AC/DC/USB/Type C outlets and solar charging support in a compact body, which is useful, but its feature set is limited by the tiny battery and low output ceiling. In real-world terms, the Anker does more jobs and does them better. Winner: Anker SOLIX C1000.

Overall user experience

For UK renters and flat-dwellers, the best product is the one that solves a real problem without becoming a burden. The Anker SOLIX C1000 is the clear choice if you want a legitimate backup for outages, a strong camping companion, or a way to make use of optional solar panels with meaningful returns. It feels like a premium appliance rather than a gadget. The Powkey is more of an emergency accessory: handy in a bag, easy to store, and cheap enough to buy on impulse, but too limited to be a serious power solution. If you want one device that can actually replace mains power for a while, the Anker is the obvious winner. If you only want a small battery for phones and lights, the Powkey is acceptable, but it is not in the same class.

Overall summary: The Anker SOLIX C1000 wins this comparison overwhelmingly because it offers real power, real capacity, and real backup utility. The Powkey 100W is only the better buy if your needs are extremely modest and your budget is tight. For most people comparing these two, the Anker is the definitive recommendation.