COMPARISON / 1kWh CLASS
EcoFlow DELTA 3 Plus vs Anker SOLIX C1000 Gen 2: Which 1kWh Power Station Is Better for You?
Same 1,024Wh battery. Opposite design priorities: Anker optimises output, charging speed and weight; EcoFlow optimises solar, ports and expansion.
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DELTA 3 Plus
1kWh with a path to a larger system
US 120V model- Nominal energy
- 1,024 Wh
- Rated AC output
- 1,800 W
- Approximate weight
- 27.6 lb
Manufacturer specifications · LFP battery
SOLIX C1000 Gen 2
Standalone 1kWh with higher output
US 120V model- Nominal energy
- 1,024 Wh
- Rated AC output
- 2,000 W
- Approximate weight
- 24.9 lb
Manufacturer specifications · LiFePO₄ battery
QUICK VERDICT
Same battery, two different products.
Both store 1,024Wh and both use LFP chemistry with roughly 4,000 cycles to 80%. Capacity will not decide this comparison.
Anker prioritises standalone performance: 2,000W continuous output, up to 1,600W UltraFast AC charging, and the lowest weight here at about 24.9lb.
EcoFlow prioritises flexibility: up to 1,000W solar input, 13 output ports, dual 140W USB-C, and battery expansion up to 5kWh with compatible units.
Choose the C1000 Gen 2 if the unit stays self-contained and you value power headroom, fast mains recharge and lighter carrying weight — especially for tools, job sites and car camping.
Choose the DELTA 3 Plus if you plan a serious solar array, need many ports, or expect to add battery capacity later.
The clearest dividing line is expansion: Anker's Gen 2 does not support adding battery capacity.
Side-by-side specifications
| Specification | EcoFlow DELTA 3 Plus | Anker SOLIX C1000 Gen 2 |
|---|---|---|
| Nominal capacity | 1,024Wh | 1,024Wh |
| Battery chemistry | LFP | LiFePO₄ (LFP) |
| Rated AC output | 1,800W | 2,000W |
| Surge / high-load mode | 3,600W surge; X-Boost | Up to 3,000W peak |
| Maximum AC charging | Up to 1,500W | Up to 1,600W UltraFast |
| Advertised full AC charge | About 56 minutes | About 49 minutes |
| Maximum solar input | Up to 1,000W (two 500W MPPT inputs) | Up to 600W |
| UPS switching | <10ms | 10ms |
| Cycle life | 4,000 cycles to 80%+ | 4,000 cycles to 80%+ |
| Output ports | 13 | 10 |
| Maximum USB-C | Two 140W | Up to 140W |
| Battery expansion | Up to 5kWh with compatible batteries | Not supported |
| Weight | About 27.6lb | About 24.9lb |
| Dimensions | Approx. 16 × 8 × 11 in | 15.12 × 8.19 × 9.61 in |
Sources: EcoFlow DELTA 3 Plus US product page ↗ and Anker SOLIX C1000 Gen 2 US product page ↗. Verify the exact regional model, current manual and bundle contents before purchase.
Capacity: a genuine tie, and not a useful lever
Both batteries are rated at 1,024Wh, so neither offers a runtime advantage from advertised capacity. Nominal capacity is also not the same as usable AC energy: energy is lost through inverter conversion, internal electronics, standby draw, temperature, battery management and wiring.
Since both start from the same nominal figure, capacity should be removed from the decision entirely. The same applies to cycle life, which is roughly 4,000 cycles to about 80% on both.
AC output: Anker has more continuous headroom
EcoFlow rates the DELTA 3 Plus at 1,800W continuous; Anker rates the C1000 Gen 2 at 2,000W. That 200W gap is irrelevant for phones, laptops, routers, TVs and most camping electronics, but it matters when you approach the inverter limit.
Anker specifies up to 3,000W peak output, while EcoFlow specifies 3,600W surge plus X-Boost for certain higher-power appliances. Peak, surge and boost modes are not the same as normal continuous inverter output, so compare the continuous figures: 1,800W versus 2,000W.
What both can realistically run
| Device | Typical draw | Fit |
|---|---|---|
| Smartphone | 10–30W | Both easily |
| Laptop | 50–100W | Both easily |
| TV | 80–150W | Both easily |
| Refrigerator | 50–300W running | Both, check startup surge |
| CPAP | 30–60W | Both easily |
| Coffee maker | 800–1,200W | Both |
| Microwave | 1,000–1,500W | Both |
| Power tools | 500–1,500W | Both; Anker has more headroom |
| Hair dryer | 1,200–1,800W | Both near the limit |
| Several high-load devices at once | Varies | Check total; Anker has more rated headroom |
Ranges are general appliance estimates for planning. Check the actual input wattage on the label of the device you intend to run.
The 200W difference should not be exaggerated — most buyers will see similar appliance compatibility. It becomes a real argument at the top end of the range, or when you plan to run several demanding devices together.
Charging: Anker is faster on mains, EcoFlow has far more solar
Mains charging
EcoFlow specifies up to 1,500W AC input with an advertised full recharge of about 56 minutes under its stated conditions. Anker's UltraFast mode raises maximum AC input to 1,600W, with an advertised full recharge of about 49 minutes; the mode is enabled through the Anker app.
Seven minutes will not transform most people's experience. The more meaningful point is that Anker pairs faster maximum charging with a slightly higher output rating while weighing less — a useful combination if you drain and recharge frequently, as contractors, mobile workers, road trippers and event setups tend to.
If your station spends most of its life fully charged in a closet waiting for an outage, this difference matters much less.
Solar charging
Here the comparison swings the other way. Anker accepts up to 600W of solar — enough to make solar charging genuinely practical, with Anker stating roughly 1.8 hours to full under ideal conditions at 600W. EcoFlow provides two 500W MPPT inputs for up to 1,000W total, with an advertised full recharge of around 70 minutes under its specified ideal conditions.
Real solar output depends on sun angle, cloud cover, panel temperature, shading, panel configuration, season and location, so treat advertised recharge times as best-case rather than guaranteed. The input ceilings are the durable difference: if you intend to recover as much energy as possible during a limited daylight window, EcoFlow's higher ceiling is worth more.
If you only ever connect one or two modest portable panels, the gap may never affect you. See our solar buying guide before choosing panels.
Portability: Anker takes the lead
The C1000 Gen 2 weighs about 24.9lb against about 27.6lb for the DELTA 3 Plus — roughly 2.7lb — and is slightly more compact at 15.12 × 8.19 × 9.61 inches versus approximately 16 × 8 × 11 inches.
Neither is hard to move compared with a 2kWh or 3kWh station. But if the unit repeatedly travels between house and vehicle, vehicle and campsite, garage and backyard, or job site to job site, a few pounds and a smaller enclosure start to matter. This is one of the strongest practical arguments for the Anker.
Ports: EcoFlow offers more connectivity
The DELTA 3 Plus provides 13 output ports against 10 on the C1000 Gen 2. EcoFlow also includes two 140W USB-C ports, which is useful if your household or work setup includes multiple modern laptops. Anker offers up to 140W USB-C, still sufficient for many high-performance laptops.
For a typical camping setup, 10 ports are already plenty. Photographers, creators, mobile offices and families charging many devices at once may value EcoFlow's extra connectivity.
UPS and battery longevity: effectively ties
EcoFlow specifies <10ms UPS switching; Anker specifies 10ms. For most buyers that is the same category, and both are positioned for desktop computers, Wi-Fi equipment, NAS devices, CPAP machines and home-office electronics.
Both use long-life LFP chemistry rated at roughly 4,000 cycles to about 80% capacity. One full cycle daily would represent nearly 11 years before reaching that threshold. Real aging also depends on temperature, storage state of charge and usage pattern, so neither model has an obvious weakness here.
As always, verify the requirements of particularly sensitive equipment rather than assuming every device tolerates every UPS implementation.
The biggest difference: expansion
This may matter more than the 200W output gap. EcoFlow supports compatible extra batteries, allowing the DELTA 3 Plus to expand from 1kWh to up to 5kWh. The Anker SOLIX C1000 Gen 2 does not support battery capacity expansion.
That is a deliberate design choice rather than an oversight: Anker positions the Gen 2 around higher output, faster charging, smaller dimensions and lower weight. It creates two different ownership paths.
- Anker: buy 1,024Wh, use 1,024Wh, keep a compact and light self-contained system.
- EcoFlow: buy 1,024Wh today and add capacity later if your needs grow.
The distinction becomes most important for home backup. You may judge 1kWh sufficient today, then experience a long outage and want more refrigerator runtime, more networking uptime, more CPAP runtime, or enough energy to carry essential devices overnight. With EcoFlow there is a clearer upgrade path; with the C1000 Gen 2 you would add an independent power station or move to a different system.
Camping, RV use, home backup and tools
Camping
This is close. Anker is lighter, smaller, higher-output and faster from mains — excellent camping characteristics for weekend car camping where you recharge at home before leaving. EcoFlow becomes more interesting as the setup gets more ambitious: for multi-day off-grid trips relying on solar, the 1,000W ceiling carries more weight. Short trips favour Anker; longer solar-heavy trips favour EcoFlow.
RV use
Anker's lower weight and compact dimensions make it easier to move and store, and its 2,000W inverter gives headroom for cooking appliances. EcoFlow counters with more solar input, more ports, expandable capacity and compatibility with additional EcoFlow charging equipment. If the station is a portable supplement, Anker's design is attractive; if you are gradually building a larger RV energy system, EcoFlow's expandability deserves more weight.
Home backup
Both share the same fundamental limitation: 1,024Wh is excellent for essential devices — refrigerator, router, phones, laptop, lights, CPAP, TV and occasional microwave use — but not for running a house through a long outage. Anker's 2,000W inverter provides more instantaneous output; EcoFlow's expansion provides more potential runtime. Those are different advantages. If the system will stay a compact emergency battery, Anker makes a strong case; if your needs may grow, EcoFlow leaves more room.
Power tools and job sites
This is where Anker's higher rated output becomes most relevant. Tools with high startup demand, or several devices used together, can push inverter limits. The C1000 Gen 2's 2,000W continuous rating provides an additional 200W of normal headroom, and its lower weight and faster AC charging suit mobile work well.
Pros & cons
DELTA 3 Plus strengths
- Up to 1,000W solar input via two 500W MPPT inputs.
- Expandable to about 5kWh with compatible batteries.
- 13 output ports including two 140W USB-C.
- Broad charging ecosystem across AC, solar and other sources.
- Sub-10ms UPS switching suits everyday backup.
DELTA 3 Plus limits
- Lower continuous AC output at 1,800W.
- Heavier at about 27.6lb.
- Larger enclosure than the Anker.
- Slightly slower advertised mains recharge.
C1000 Gen 2 strengths
- 2,000W continuous output — more inverter headroom.
- About 49-minute advertised UltraFast mains recharge.
- About 24.9lb, the lightest here.
- Compact dimensions for vehicles, closets and RVs.
- 4,000-cycle LFP battery and 10ms UPS.
C1000 Gen 2 limits
- No battery capacity expansion.
- 600W solar ceiling, well below EcoFlow's 1,000W.
- 10 ports versus 13.
- Less suited as the foundation of a larger battery system.
Four questions that decide it
Both are established brands, but choosing on brand alone misses the real differences. Ask these instead:
- Will I add battery capacity later? If yes, EcoFlow's expansion support is highly relevant and Anker's limitation is decisive.
- Will I use a large solar array? If yes, EcoFlow's higher input ceiling matters; if you only own a modest panel, it may never come into play.
- Will I carry it often? If yes, Anker's lower weight becomes increasingly valuable.
- Will I run high-power devices regularly? If yes, Anker's 2,000W rated inverter provides extra headroom.
One more variable can override all of the above: current price. Portable power stations are heavily discounted, which is why we do not treat list price as the measure of value. If one model is substantially cheaper during a promotion, ask whether you will genuinely use the other's advantages. If you never plan to add a battery, EcoFlow's expansion has less value to you. If you only use a 200W portable panel, the difference between 600W and 1,000W ceilings may never affect you.
FINAL VERDICT
Standalone power, or room to grow.
Both start from 1,024Wh and take different routes from there. The Anker SOLIX C1000 Gen 2 emphasises standalone performance: 2,000W continuous output, up to 1,600W UltraFast charging and about 24.9lb, delivering a lot of power from a compact package.
The EcoFlow DELTA 3 Plus emphasises flexibility: 1,800W output, up to 1,000W solar input, 13 ports, dual 140W USB-C and expansion up to 5kWh with compatible batteries.
If your priority is a compact standalone 1kWh station with strong AC performance, focus on Anker's advantages. If your priority is solar charging, connectivity and building a larger system later, focus on EcoFlow's. And if you will use neither set of specialised advantages, current selling price may be the most important difference of all.
Still deciding?
The clearest split here is expansion: only the DELTA 3 Plus supports adding battery capacity. If BLUETTI is also on your list, compare it directly.
Other 1kWh pairings
- BLUETTI Elite 100 V2 vs DELTA 3 Plus →
- BLUETTI Elite 100 V2 vs C1000 Gen 2 →
- All three 1kWh finalists side by side →
Want one model in full?
Stepping up a class
Frequently asked questions
Which has more battery capacity?
Neither. Both are rated at 1,024Wh nominal capacity, so any runtime difference comes from inverter efficiency, standby draw and load behaviour rather than stored energy.
Which has more AC output?
The Anker SOLIX C1000 Gen 2 at 2,000W continuous, against 1,800W for the EcoFlow DELTA 3 Plus. Both also advertise higher peak or boost figures that should not be treated as continuous output.
Which charges faster from a wall outlet?
Anker advertises about 49 minutes to full using its 1,600W UltraFast mode, which is enabled in the Anker app. EcoFlow advertises about 56 minutes with up to 1,500W AC input. We have not measured either.
Which supports more solar input?
EcoFlow, at up to 1,000W through two 500W MPPT inputs, against up to 600W for the Anker C1000 Gen 2.
Which is lighter?
The Anker C1000 Gen 2 at about 24.9lb, versus about 27.6lb for the EcoFlow DELTA 3 Plus.
Which is better if I want more capacity later?
EcoFlow has the clear advantage: the DELTA 3 Plus supports compatible extra batteries and can expand to about 5kWh. Anker states the C1000 Gen 2 does not support battery capacity expansion.
Can both run a refrigerator or a microwave?
Yes for typical refrigerators and many household microwaves, provided the appliance's actual input wattage fits the rated output. Refrigerator runtime depends on average consumption, compressor cycling and ambient temperature.
Are both LiFePO₄?
Yes. Both use LFP/LiFePO₄ chemistry rated at roughly 4,000 cycles to about 80% capacity.
Which is better for camping or home backup?
For camping, Anker's lower weight, smaller size and higher output favour short trips, while EcoFlow's higher solar ceiling favours longer off-grid stays. For home backup, both suit essential devices; EcoFlow offers more potential runtime through expansion, while Anker provides more continuous output from the standard unit.
Did WattPick Lab test these power stations?
No. This is a research-based comparison using manufacturer documentation and labelled calculations. We have not measured usable capacity, charging speed, noise or long-term reliability.
Sources & editorial method
Research checked September 24, 2026. This comparison covers the US versions of both models. We use official documentation for specifications and label every calculation as an estimate. Solar and charging recharge times are manufacturer claims under stated ideal conditions and are not guaranteed outdoor performance.
- EcoFlow DELTA 3 Plus US product page ↗ — capacity, output, ports, solar input and expansion claims.
- Anker SOLIX C1000 Gen 2 US product page ↗ — capacity, output, UltraFast charging, weight and expansion limitations.
We have not published measured usable-energy, noise or reliability figures for either model. Merchant prices, sales counts and customer ratings are not treated as our test evidence. Live offers and bundle contents should be checked at the retailer.