COMPARISON / 1kWh CLASS / THREE-WAY
Three 1kWh stations, one decision: Elite 100 V2 vs DELTA 3 Plus vs C1000 Gen 2
Three stations, three different answers to the same question. Same nominal capacity — but they disagree about output, solar headroom, weight and whether you can ever add a battery.
Quick verdict
There is no single winner here, because the three stations are not optimised for the same buyer. The fastest way to choose is to answer one question first: where will the energy come from?
IF YOU RECHARGE FROM A WALL OUTLET
Anker SOLIX C1000 Gen 2
The highest continuous output of the three at 2,000W and the fastest advertised wall recharge at roughly 49 minutes. It is also the lightest at 24.9 lb. The trade is a 600W solar ceiling and no capacity expansion.
2,000W AC 1,600W UltraFast
IF YOU RECHARGE FROM SOLAR
BLUETTI Elite 100 V2
A 1,000W solar ceiling — the highest in this group alongside the DELTA 3 Plus — in the most compact enclosure here at about 12.6 inches long. Rated output is the lowest of the three at 1,800W.
1,000W solar Compact footprint
The one question that decides it
Everything below is detail. This is the fork in the road.
- Wall outlet is your main source → the C1000 Gen 2 earns its place on output and charge speed.
- Solar is your main source → compare the Elite 100 V2 and DELTA 3 Plus, the two 1,000W-input units.
- You may add a battery later → only the DELTA 3 Plus supports expansion, so read the DELTA 3 Plus review.
All three, side by side
| Specification | Elite 100 V2 | DELTA 3 Plus | C1000 Gen 2 |
|---|---|---|---|
| Battery capacity | 1,024Wh | 1,024Wh | 1,024Wh |
| Battery chemistry | LiFePO₄ | LiFePO₄ | LFP / LiFePO₄ |
| Rated AC output | 1,800W | 1,800W | 2,000W |
| Peak / boost output | Power Lifting mode | Surge support | 3,000W peak |
| Max AC charging | 1,200W | 1,800W | 1,600W UltraFast |
| Advertised AC recharge | 80% in ~45 min | ~80% in 50 min | 100% in ~49 min* |
| Max solar / DC input | 1,000W | 1,000W | 600W |
| UPS switching | ≤10ms | ≤10ms | 10ms |
| Cycle life | 4,000+ to 80% | 4,000+ to 80% | 4,000 to 80%+ |
| USB-C output | 140W + 100W | 140W + 100W | Up to 140W |
| Weight | 25.3 lb | 30.9 lb | 24.9 lb |
| Dimensions (in) | 12.6 × 8.5 × 9.8 | 15.4 × 9.6 × 10.2 | 15.12 × 8.19 × 9.61 |
| Expandable capacity | No | Yes (expansion battery) | No |
* Under Anker’s stated UltraFast charging conditions. Advertised recharge times are manufacturer claims and are not independent measurements.
Capacity: a genuine three-way tie
All three are rated at 1,024Wh nominal. There is no runtime advantage to be found in the capacity row, and no brand gets a head start on how long your refrigerator will last. Any difference you experience in practice will come from inverter efficiency, standby draw, temperature and how the load behaves — not from the number on the box.
That is what makes this comparison worth reading. When capacity is identical, the decision has to be made on the things that are not identical.
Output: Anker leads, but check your actual load
The Anker C1000 Gen 2 is rated at 2,000W continuous; the BLUETTI and EcoFlow are both rated at 1,800W. That 200W gap is real hardware headroom, but it only helps in a narrow situation: when your combined load sits between 1,800W and 2,000W.
A 150W refrigerator does not care. A 70W laptop does not care. A hair dryer or a large microwave might — if you intend to run one at the same time as everything else. For most buyers the 200W is insurance rather than a daily benefit, and it should be priced accordingly.
Charging: fast on the wall, fast on the roof — pick one
This is where the three stations genuinely diverge.
- Wall charging. EcoFlow advertises the highest AC input at up to 1,800W, Anker follows with a 1,600W UltraFast mode and an advertised full recharge in about 49 minutes, and BLUETTI sits at 1,200W with roughly 80% in 45 minutes. All three are fast; none of them is slow enough to matter if you charge overnight.
- Solar charging. BLUETTI and EcoFlow both accept up to 1,000W of solar or DC input. Anker accepts up to 600W.
If solar is a real part of your plan, that 400W input gap is the single most consequential difference in this table. If solar is not, it is worth nothing to you — and you should not pay for it.
Portability: weight and shape are different problems
The DELTA 3 Plus is the heaviest of the three at about 30.9 lb. The Anker is the lightest at 24.9 lb, with the BLUETTI 0.4 lb behind at 25.3 lb.
But weight is only half the question. The BLUETTI is markedly shorter than the other two, which matters when you are fitting a station behind a vehicle seat, inside an RV cabinet or on a garage shelf. If you carry it up stairs, the Anker’s weight helps. If you store it in a tight compartment, the BLUETTI’s shape helps.
Expansion: only one of the three can grow
This is the limitation most buyers discover too late. The Anker C1000 Gen 2 does not support battery capacity expansion, and neither does the Elite 100 V2. Anker states plainly that the Gen 2 traded expansion away for faster charging, higher output and lower weight.
The EcoFlow DELTA 3 Plus supports an add-on expansion battery. If you think your energy needs will grow — a second refrigerator, a longer outage, a CPAP added later — that is a structural advantage the other two cannot match, regardless of how they compare on paper today.
Which one for which job
Weekend camping, charged at home
All three are comfortable. Anchoring on weight and output points to the C1000 Gen 2; anchoring on pack size points to the Elite 100 V2.
Multi-day off-grid with panels
The 1,000W solar ceiling of the Elite 100 V2 and DELTA 3 Plus is the relevant number, and the C1000 Gen 2 is the weakest of the three here.
Power tools on the move
Anker’s 2,000W continuous output plus its fast wall recharge fits a work pattern that shuttles between job sites and mains power.
Refrigerator and CPAP backup at home
Capacity is identical, so this becomes a question of expansion and UPS behaviour. Only the DELTA 3 Plus can add battery capacity; all three advertise UPS switching at or under 10ms.
RV use
If the RV has real solar capacity, the two 1,000W-input units make better use of it. If you mostly plug into campground hookups, the Anker’s faster wall charging matters more.
What each one gets right — and what it costs you
BLUETTI ELITE 100 V2
Compact solar headroom
Strengths: 1,000W solar input; the smallest footprint of the three; 140W + 100W USB-C; ≤10ms UPS.
Costs: lowest rated output at 1,800W; no capacity expansion; 1,024Wh stays 1,024Wh.
ECOFLOW DELTA 3 PLUS
The expandable one
Strengths: 1,000W solar input, up to 1,800W AC charging and the only expandable battery of the three.
Costs: heaviest at about 30.9 lb, which works against the portability the class is known for.
ANKER SOLIX C1000 GEN 2
Output and wall speed
Strengths: 2,000W continuous output, 1,600W UltraFast charging and the lightest build at 24.9 lb.
Costs: 600W solar ceiling — the lowest here — and no capacity expansion at all.
THE PATTERN
Each brand bets on one thing
Anker bets on output and mains speed. BLUETTI bets on solar headroom and size. EcoFlow bets on expansion. None of them bet on capacity, because capacity is identical.
Four questions before you buy
- Where does the energy come from? Wall outlet favours the C1000 Gen 2; solar favours the Elite 100 V2 or DELTA 3 Plus.
- Will you ever run more than 1,800W at once? If yes, only the Anker has headroom.
- Will your needs grow? If yes, only the DELTA 3 Plus can be expanded.
- Will you carry it or store it? Carrying favours the Anker’s lower weight; storing favours the BLUETTI’s shorter body.
Final verdict
If you recharge from mains power and want the most output for the least weight, the Anker SOLIX C1000 Gen 2 is the clearest match. If you plan to charge from panels and want the smallest station that does it, the BLUETTI Elite 100 V2 fits. If you expect to add capacity later, the EcoFlow DELTA 3 Plus is the only one of the three that allows it.
Because all three are so close on capacity and cycle life, price should carry real weight in this decision. A promotion on any one of them can outweigh a specification difference you may never actually use.
Check current prices
Specifications are close. Live pricing is where these three separate.
BLUETTI Elite 100 V2 — check price ↗
STILL DECIDING?
Take one pairing at a time
The three-way view is for elimination. Use the two-way pages to make the final call.
Or step up a class
None of these three fits because your loads are whole-home rather than camping?
- Apex 300 vs F3800: the 240V home-backup decision →
- Or start from whether you need the extra capacity at all →
Coming from a mid-size station?
Frequently asked questions
Which of the three has the most battery capacity?
None. All three are rated at 1,024Wh nominal. Any real-world runtime difference comes from efficiency, standby draw and load behaviour, not capacity.
Which has the highest AC output?
The Anker SOLIX C1000 Gen 2 at 2,000W continuous. The BLUETTI Elite 100 V2 and EcoFlow DELTA 3 Plus are both rated at 1,800W. Peak and boost figures are not continuous output.
Which charges fastest from a wall outlet?
EcoFlow advertises the highest AC input at up to 1,800W. Anker advertises a full recharge in about 49 minutes through its 1,600W UltraFast mode. BLUETTI advertises roughly 80% in 45 minutes at up to 1,200W. We have not measured any of them.
Which supports the most solar input?
The BLUETTI Elite 100 V2 and EcoFlow DELTA 3 Plus, both at up to 1,000W DC/solar input. The Anker C1000 Gen 2 accepts up to 600W.
Can any of them be expanded with an extra battery?
Yes — only the EcoFlow DELTA 3 Plus supports battery capacity expansion. Anker states the C1000 Gen 2 has no expansion, and the Elite 100 V2 has none either.
Which is lightest?
The Anker C1000 Gen 2 at about 24.9 lb, followed closely by the BLUETTI Elite 100 V2 at 25.3 lb. The DELTA 3 Plus is heaviest at roughly 30.9 lb.
Which is most compact?
The BLUETTI Elite 100 V2, at approximately 12.6 × 8.5 × 9.8 inches. It is noticeably shorter than the other two, which matters for tight storage spaces.
Do all three use LiFePO₄ batteries?
Yes. All three use LFP/LiFePO₄ chemistry rated at approximately 4,000 cycles to about 80% of original capacity.
Do all three work as UPS backup?
All three advertise UPS switching at or under 10ms, which is quick enough for desktop computers, routers and CPAP machines. Sensitive equipment should still be checked against its own requirements.
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 page covers the US versions of all three models. Specifications come from official manufacturer documentation; every estimate is labelled as such. Advertised recharge times are manufacturer claims under stated ideal conditions and are not guaranteed results.
- BLUETTI Elite 100 V2 US product page ↗ — capacity, output, solar input, ports and weight.
- EcoFlow DELTA 3 Plus product page ↗ — capacity, output, AC charging, expansion battery support and weight.
- Anker SOLIX C1000 Gen 2 US product page ↗ — output, UltraFast charging, solar input, weight and expansion limitations.
We have not published measured usable-energy, noise or reliability figures for any of the three models. 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.