The Anker Solix C1000 Gen 2 is the stronger unit on raw specifications: it charges faster (about 49 minutes versus 80), outputs more power (2,000W versus 1,800W), takes more solar (600W versus 500W), and has a quicker sub-10ms UPS. The EcoFlow Delta 2 wins on value and flexibility: it’s usually the cheaper of the two, expands to 3,040Wh, and carries 13 ports. Most UK buyers should pick the Anker for performance, or the Delta 2 to spend less and grow later.
Specifications Compared
| Specification | EcoFlow Delta 2 | Anker SOLIX C1000 Gen 2 Portable Power Station |
|---|---|---|
| Price | Check price on Amazon UK | Check price on Amazon UK |
| Capacity | 1,024Wh LiFePO4 | 1,024Wh LFP |
| AC output (continuous) | 1,800W | 2,000W Higher |
| Surge | 2,700W | 3,000W Higher |
| Full mains charge | ~50 min | ~49 min Faster |
| Max solar input | 500W | 600W Higher |
| UPS switchover | ~30ms | ~10ms Faster |
| AC outlets (UK) | 4 × UK three-pin | Multiple UK three-pin |
| USB-C (max) | 100W | 140W |
| Total ports | 13 More | 9 |
| 12V car charging | 126W | 120W |
| Expandable | Yes, to 3,040Wh | No |
| Weight | 12 kg | 11 kg Lighter |
| App control | Wi-Fi + Bluetooth | Wi-Fi + Bluetooth |
| Warranty (UK) | 5 years UK | 5 years UK |
Who Should Choose Each?
Choose the EcoFlow Delta 2 if:
- You want to spend less. It’s usually the cheaper of the two.
- You might need more capacity later. It expands from 1,024Wh to 3,040Wh with extra batteries.
- You run lots of devices at once. Its 13 ports include four UK three-pin sockets and two 100W USB-C ports.
- You want X-Boost to run a 2,200W-rated appliance off an 1,800W unit.
- Best for: camping, home backup, and van life, especially buyers who want value and room to expand.
Best for: camping, home backup, and van life, especially buyers who want value and room to expand.
Choose the Anker Solix C1000 Gen 2 if:
- You want the fastest recharge. It refills from flat in about 49 minutes.
- You need more output. Its 2,000W continuous beats the Delta 2’s 1,800W.
- You charge from solar. Its 600W input is higher than the Delta 2’s 500W.
- You want to buy or return in person at Argos, Currys, or Costco.
Best for: solar charging, campervans, and camping, especially buyers who want the fastest charge and highest output.
Charging Speed
How fast does each unit charge from the mains?
The Anker Solix C1000 Gen 2 refills from flat to full in about 49 minutes, while the EcoFlow Delta 2 needs roughly 80 minutes for a full charge (and 50 minutes to reach 80%). Both use high-current AC input, but Anker’s UltraFast mode pulls up to 1,600W from the wall against EcoFlow’s 1,200W. For a quick turnaround, the Anker is clearly faster.
Anker leans hard on this. It even holds a Guinness World Record for the fastest-recharging 1kWh power station, verified at 43 minutes 48 seconds under controlled conditions, and independent testing by The Solar Lab landed near 47 minutes in normal use. EcoFlow’s X-Stream system, by contrast, hits 80% in 50 minutes then tapers, which is still quick for the class but not in the same bracket for a full fill.
There is a practical catch on both units. Fast charging spins the cooling fans up, so a full-speed top-up is audible. Both apps let you cap the input (down to around 400W to 600W) to keep things quiet overnight. You trade a little speed for a lot less noise.
The Anker wins. A 49-minute full charge is genuinely faster than the Delta 2’s 80 minutes, and it matters most when you’re topping up before a trip or between power cuts.
Power Output and X-Boost
Which unit powers more demanding appliances?
The Anker has the higher native output at 2,000W continuous with a 3,000W surge, against 1,800W and 2,700W on the Delta 2. EcoFlow narrows the gap with X-Boost, which runs resistive appliances rated up to 2,200W by trimming their draw. For most high-wattage gear the Anker is more capable, but X-Boost gives the Delta 2 useful headroom it would not otherwise have.
In real UK use, neither unit will boil a standard kettle (2,500W to 3,000W), run an electric shower, or power an oven. Those exceed both units’ limits. Where the difference shows is in the middle ground: a 2,000W heater, a high-draw microwave, or several tools at once sit more comfortably on the Anker’s 2,000W ceiling than on the Delta 2’s native 1,800W.
X-Boost is still worth understanding, because it’s EcoFlow’s clever workaround rather than raw power. It works well for simple heating loads and most camping appliances, but it’s not suited to devices with tight voltage needs, such as some medical or precision equipment. For those, the steady 2,000W of the Anker is the safer bet.
The Anker edges it. Higher continuous output and a bigger surge make it the more capable unit, though EcoFlow’s X-Boost keeps the Delta 2 in the game for typical loads.
Home Backup and UPS
Which is better for power-cut protection in the UK?
Both units offer UPS-style switchover. The Anker Solix C1000 Gen 2 switches to battery in under 10 milliseconds, with all AC ports supporting UPS, while the EcoFlow Delta 2’s EPS mode switches in about 30 milliseconds. For raw switchover speed, the Anker is actually quicker.
That difference is small but real. In independent testing, the Anker’s sub-10ms changeover kept a Wi-Fi router from blinking at all, whereas the Delta 2’s 30ms caused a brief router hiccup. For most homes, 30ms is still fine for routers, NAS drives, and desktops, but if you run anything that dislikes even a short gap, the Anker has the edge.
So why might the Delta 2 still suit home backup better for some people? Two reasons, and neither is switchover speed. First, it expands to 3,040Wh, so it can cover a longer outage. Second, its 13 ports let you run more household items at once. If your worry is a multi-hour cut rather than a millisecond gap, the EcoFlow’s flexibility counts. Read our home backup buying guide for how to size for a real outage.
Closer than it looks. The Anker wins on switchover speed (under 10ms versus 30ms); the EcoFlow wins on capacity headroom thanks to expansion. Pick on which matters more to you.
Solar Charging in the UK
How much solar can each take, and does it matter here?
The Anker accepts up to 600W of solar through a single input, against 500W on the Delta 2, also single input. In strong UK summer sun the Anker can refill in roughly 1.8 hours; the Delta 2 takes three to four hours from a 500W array. In typical overcast UK weather, both take considerably longer, so treat solar as a top-up rather than your only source.
Neither unit is a solar powerhouse. Both have a single solar port, so you can’t split panels across two strings the way you can on the Jackery Explorer 1000 v2 (dual input) or push the higher wattage of the Bluetti Elite 100 V2, which takes up to 1,000W. Between these two, though, the Anker’s 100W of extra headroom means it captures a bit more from a larger array on a bright day.
For UK conditions specifically, the realistic picture is modest. A pair of 200W panels in good summer light will trickle either unit back up over a day of camping, enough to keep lights and a fridge going into the evening. Through a cloudy week, plan to charge from the mains and treat solar as a bonus. Our UK solar charging guide sets realistic expectations for British weather, and our best solar generators for the UK roundup covers solar-first units.
The Anker wins narrowly on input (600W versus 500W). For serious solar harvest, though, neither is the right tool; look at the Bluetti Elite 100 V2 instead.
Weight, Size and Noise
Which is easier to live with day to day?
The Anker is lighter at 11.3kg against the Delta 2’s 12kg, and slightly more compact, which helps when you’re loading a car boot or a caravan locker solo. Both are two-handed carries rather than backpack items. On noise, both run near-silent at light load and both get audibly loud (around 45dB on the Anker) when charging fast or under heavy draw.
The weight gap is small, under a kilogram, so it’s not a deciding factor on its own. Where it adds up is repeated lifting: in and out of a vehicle several times a weekend, the lighter Anker is a touch kinder. Neither is meant for carrying any real distance.
Noise behaves the same way on both. The fans are the price of fast charging, since pushing high wattage into the cells makes heat that has to be cleared. The fix is identical too: cap the charging input in the app before bed and you keep the peace. For day-to-day running of a fridge or laptop, you’ll barely hear either one.
The Anker wins by a whisker on weight. Noise is a wash, and both are easily managed through their apps.
Ports, Expandability and Flexibility
Which unit is more versatile?
This is the EcoFlow Delta 2’s strongest territory. It carries 13 ports against the Anker’s 9, including four UK three-pin sockets, and it expands from 1,024Wh to 3,040Wh with extra batteries. The Anker has a fixed 1,024Wh and cannot grow, though it counters with a faster 140W USB-C port versus EcoFlow’s 100W.
For a busy household or a packed campervan, the port count matters. Four AC sockets plus multiple USB outputs means fewer adapters and splitters, and the Delta 2’s 13-port layout is one of the most complete at this capacity. The Anker keeps things leaner with a clean nine-port set, and its single 140W USB-C is the fastest laptop charger of the two.
Expandability is the bigger story. If there is any chance you’ll want more runtime later, for longer power cuts or full-time van life, the Delta 2 lets you bolt on capacity without buying a second unit. The Anker asks you to size correctly on day one. For buyers who value that growth path, it’s a genuine reason to favour the EcoFlow even though the Anker wins more spec lines. Not sure how much you need? Try our sizing calculator.
The EcoFlow wins clearly. More ports and true expandability to 3,040Wh give it a versatility the fixed Anker cannot match.
Warranty, Retail and Value
Which offers better value for UK buyers?
Both units carry a 5-year UK warranty, so cover is equal. The Anker usually costs more than the Delta 2, but it’s sold on the high street through Argos, Currys, Costco, and Machine Mart, whereas the EcoFlow is mainly online via EcoFlow.com and Amazon UK. The EcoFlow is the value pick; the Anker is the easier in-person buy. Check the current price on Amazon UK for both, as it shifts with bundles and sales.
Warranty is no longer a differentiator. Both brands now back their flagship 1kWh units for five years in the UK and handle claims directly, so this should not sway your choice. The Anker’s 4,000-cycle battery does edge the Delta 2’s 3,000+ on paper, which points to a slightly longer usable life, though both will comfortably outlast a decade of weekend use.
On price, the Delta 2 is the clear value play. You give up some charge speed, output, and solar input, but you save money and gain expandability. The Anker asks for a premium and largely justifies it with performance and high-street convenience. Which is “better value” comes down to whether raw speed and output, or a lower price and room to grow, matter more to you.
The EcoFlow wins on price and expandability; the Anker wins on retail convenience and battery longevity. Warranty is a tie.
Advantages at a Glance
EcoFlow Delta 2 Advantages
- Usually the cheaper of the two, the value pick
- Expandable from 1,024Wh to 3,040Wh
- 13 ports, the most in this pairing
- X-Boost runs 2,200W-rated appliances off an 1,800W unit
- Two 100W USB-C ports
- 5-year UK warranty
Anker Solix C1000 Gen 2 Advantages
- About a 49-minute full charge, fastest in the 1kWh class
- 2,000W continuous output with a 3,000W surge
- 600W solar input, higher than the Delta 2’s 500W
- Sub-10ms UPS, with all AC ports supported
- 140W USB-C and a 4,000-cycle battery
- Sold on the high street at Argos, Currys, Costco, and Machine Mart
- 5-year UK warranty
Overall Verdict
Which should most UK buyers choose in 2026?
For pure performance, the Anker Solix C1000 Gen 2 is the stronger 1kWh power station: faster charging, higher output, more solar, a quicker UPS, a 140W USB-C port, and a longer-life 4,000-cycle battery. For value and flexibility, the EcoFlow Delta 2 is the smarter buy: usually cheaper, expandable to 3,040Wh, and fitted with 13 ports. Both carry a 5-year UK warranty.
When the Anker Solix C1000 Gen 2 is the better buy
Choose the Anker if you want the fastest recharge in the class (about 49 minutes), need the higher 2,000W output for demanding gear, lean on solar (600W input), care about the quickest UPS switchover, or want to buy and return in person at Argos or Currys. It wins more head-to-head spec lines than the EcoFlow, and for performance-first buyers it’s the one to get.
When the EcoFlow Delta 2 is the better buy
Choose the Delta 2 if budget matters, if you want the option to expand to 3,040Wh later, or if you need the most ports for running many devices at once. X-Boost lets it punch above its 1,800W rating for resistive loads, and as the cheaper of the two it’s the value champion of the pair. For most cost-conscious UK buyers, it remains a very easy recommendation.
Performance-first buyers should take the Anker Solix C1000 Gen 2. Value-first and expandability-minded buyers should take the EcoFlow Delta 2. For where these two sit in the wider market, see our best portable power stations guide.
Frequently Asked Questions
Both work well, but they win in different ways. The Anker switches to battery in under 10 milliseconds, faster than the Delta 2’s roughly 30ms, so it’s better for protecting a router or computer from even a brief gap. The Delta 2 expands to 3,040Wh, so it covers a longer outage. For short, clean switchover choose the Anker; for longer cuts choose the expandable EcoFlow.
The two share the same 1,024Wh capacity, but the Anker Solix C1000 Gen 2 leads almost everywhere else. It has higher continuous output (2,000W versus 1,800W, though the Delta 3 Classic’s X-Boost mode stretches to 2,600W on compatible devices), more solar input (600W versus 500W), a faster full charge at around 49 minutes against roughly 60, more battery cycles (4,000 versus 3,000+), and a longer warranty (5 years UK versus 3 years). The Delta 3 Classic’s edge is Storm Guard, which auto-charges ahead of severe weather, plus EcoFlow’s companion app. For most UK buyers, the Anker is the stronger all-rounder here. See our full EcoFlow Delta 3 Classic review for where it still wins on camping-specific criteria like noise and Storm Guard.
