The catch
Anker SOLIX C1000
Compared with the C1000 Gen 2 it weighs more and has a lower continuous AC rating. The two generations also don’t share the same expansion path.
Side by side
Anker SOLIX C1000 vs EcoFlow DELTA 3 Plus: Original C1000 stores slightly more, and DELTA takes two solar inputs
Quick verdict
Two solar inputs and a faster transfer limit point to the DELTA 3 Plus. The original C1000 holds slightly more energy and weighs about the same.
Before you buy
Why, and what it costs you
Using a common load makes reserves easier to compare
A steady 300W load models out to about 2.8 hours on Anker SOLIX C1000 and 2.7 hours on EcoFlow DELTA 3 Plus.
Where this comes from
Hours = nominal Wh × 0.8 / 300W, using inputs of 1056Wh and 1024Wh. The 80% factor allows for unusable energy and conversion losses and is shared for planning. It is not a measured efficiency. Idle draw, temperature and the real load will change runtime.
The catch
EcoFlow DELTA 3 Plus
Despite a similar 1kWh battery, its 1,800W continuous inverter is lower than the C1000 Gen 2’s. X-Boost leaves that normal output limit unchanged.
Anker SOLIX C1000
- Why pick it
- Get a base battery with slightly more energy
- Reuse a compatible Anker expansion battery you already own
- The catch
- Compared with the C1000 Gen 2 it weighs more and has a lower continuous AC rating. The two generations also don’t share the same expansion path.
EcoFlow DELTA 3 Plus
- Why pick it
- Set up solar with two inputs
- Require a quicker published transfer time
- The catch
- Despite a similar 1kWh battery, its 1,800W continuous inverter is lower than the C1000 Gen 2’s. X-Boost leaves that normal output limit unchanged.
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What this page compares
The DELTA 3 Plus is the choice for two solar inputs and a faster transfer limit. At a similar weight, the original C1000 stores slightly more energy.
The added capacity is too little to decide it
Which one fits
Pick the situations that sound like you
Get a base battery with slightly more energy
The C1000 holds 1,056Wh, versus 1,024Wh. In the 300W planning example that works out to about five extra minutes, which makes input layout the more useful deciding factor.
- Anker SOLIX C1000
- Better fit
- EcoFlow DELTA 3 Plus
- Depends
Set up solar with two inputs
The DELTA 3 Plus gets to 1,000W by way of two 500W inputs, so a single large panel connection doesn’t automatically unlock the combined rating. The C1000 lists 600W total.
- Anker SOLIX C1000
- Depends
- EcoFlow DELTA 3 Plus
- Better fit
The battery has to carry a steady 300W load
In the shared planning case, Anker SOLIX C1000 reaches 2.8 hours and EcoFlow DELTA 3 Plus 2.7. Before picking a required overnight reserve, measure the actual wattage.
- Anker SOLIX C1000
- Depends
- EcoFlow DELTA 3 Plus
- Depends
I want solar to refill the battery
Maximum input is 600W on Anker SOLIX C1000 and 1000W on EcoFlow DELTA 3 Plus. Compare your real panel strings against the voltage and current limits as well as this total.
- Anker SOLIX C1000
- Depends
- EcoFlow DELTA 3 Plus
- Depends
In practice
Differences you will notice
Using a common load makes reserves easier to compare
A steady 300W load models out to about 2.8 hours on Anker SOLIX C1000 and 2.7 hours on EcoFlow DELTA 3 Plus.
How we worked this out
Hours = nominal Wh × 0.8 / 300W, using inputs of 1056Wh and 1024Wh. The 80% factor allows for unusable energy and conversion losses and is shared for planning. It is not a measured efficiency. Idle draw, temperature and the real load will change runtime.
The return on every pound you carry
Anker SOLIX C1000 stores about 37.1 nominal watt-hours per pound and EcoFlow DELTA 3 Plus stores 37.1.
How we worked this out
Nominal energy over published weight gives 1056 / 28.44 and 1024 / 27.6. It is a comparison of stored energy per lifting weight and not of measured efficiency or handle comfort.
A larger base battery doesn’t come from a larger solar ceiling
Over C1000, DELTA 3 Plus gives about 67% more maximum solar intake, but C1000 keeps about 3% more nominal battery capacity.
How we worked this out
(1000 / 600 - 1) × 100 = 66.7% and (1056 / 1024 - 1) × 100 = 3.1%. The DELTA solar total needs both inputs.
Option A
Anker SOLIX, A1761
C1000
The original C1000 combines 1,056Wh with an 1,800W inverter and can take a matching expansion battery. It still makes sense when adding capacity is a higher priority than saving weight.
- Best for
- Compact backup that leaves room to add capacity
Facts we checked
- 1,800W rated AC output from a 1,056Wh LFP battery
- Six AC outlets and 100W USB-C, at about 28.44 lb
- A 20ms transfer mode, up to 600W solar and support for a matching 1,056Wh expansion battery
Option B
EcoFlow, DELTA 3 Plus
DELTA 3 Plus
This 1,024Wh station cares more about quick solar recovery and high-power USB-C than about headline battery size. Its two 500W solar inputs can each take a separate panel string.
- Best for
- Backup built around laptops, plus daily solar
Facts we checked
- A 1,024Wh LFP battery paired with 1,800W rated AC output
- Two 140W USB-C ports and sub-10ms transfer, at about 27.6 lb
- Supported expansion to roughly 5kWh, and two 500W solar inputs with 11–60V windows
Spec by spec
Where they really differ
| Spec | Anker SOLIX C1000 | EcoFlow DELTA 3 Plus | In practice |
|---|---|---|---|
| Nominal battery energy | 1056 Wh | 1024 Wh | The starting runtime budget comes from stored energy. |
| Continuous AC output | 1800 W | 1800 W | Load screening uses this sustained rating, which is separate from surge and boost modes. |
| Lifting weight | 28.44 lb | 27.6 lb | Flat ground is where wheels help. A trunk, step or shelf still takes a lift. |
| Maximum solar input | 600 W | 1000 W | Panel voltage, current and per-port limits have to fit as well. |
| Dedicated battery expansion | Supported with compatible equipment | Supported with compatible equipment | Integrated battery expansion is not the same as charging from an external source. |
| Published transfer limit | 20 ms | 10 ms | Check the exact device being connected. Even a short transfer specification can’t guarantee that every load runs without interruption. |
Trade-offs
What each pick costs you
With Anker SOLIX C1000
- To reach the 600W solar ceiling you need the right panel voltage. The input-current limit is 10A below 32V and rises to 12.5A from 32V to 60V.
With EcoFlow DELTA 3 Plus
- IP65 applies to the battery pack, so it isn’t a license to run the whole station in the rain. Expansion batteries and alternator hardware are sold separately.
Decision guide
How to decide
Pick the DELTA 3 Plus if you want two solar inputs and a quicker transfer limit. The original C1000 offers slightly more stored energy at a similar weight.
The added capacity is too little to decide it
The C1000 holds 1,056Wh, versus 1,024Wh. In the 300W planning example that works out to about five extra minutes, which makes input layout the more useful deciding factor.
The solar upgrade comes with a catch
The DELTA 3 Plus gets to 1,000W by way of two 500W inputs, so a single large panel connection doesn’t automatically unlock the combined rating. The C1000 lists 600W total.
Each can grow, but only inside its own system
Compatible expansion batteries work with either one. Weigh the whole future battery and cable plan, since matching watt-hours don’t make accessories interchangeable.
What this page can’t tell you
- The runtime figures are planning estimates built on published capacity and not hands-on discharge tests.
- Never tie a station into home wiring unless you have approved transfer equipment and a qualified installation. A battery station does not guarantee medical continuity.
By the numbers
What the data shows
What we found across the portable power stations we compare, plus the checked facts behind each finding.
How many fit
Only 6 of the 50 models checked meet every need here: “I need power at campsites and on weekends away”, “I want backup power for the essentials at home”, and “Solar will be a real part of how I recharge”.
6 models fit, out of 50 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “I need power at campsites and on weekends away”, “I want backup power for the essentials at home”, and “Solar will be a real part of how I recharge”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Anker SOLIX C1000 |
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| EcoFlow DELTA 3 Plus |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Anker SOLIX C1000
Get a base battery with slightly more energy
See price & reviews on AmazonEcoFlow DELTA 3 Plus
Set up solar with two inputs
See price & reviews on AmazonEach link opens in a new tab.
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