Anker SOLIX C2000 Gen 2
- AC delivered · measured
1,761 Wh. Show source
verified source~86% of 2,048 Wh delivered on AC (Trusted Reviews)2026-07-04- output
2,400 W. Show source
claimed sourceankersolix.com ↗- surge
4,000 W. Show source
claimed sourceankersolix.com ↗- weight
18.9 kg. Show source
claimed sourceankersolix.com ↗- recharge
88 min. Show source
claimed sourceankersolix.com ↗
Balanced
#4 of 20
in the Large (2 kWh class) class
Lifted by Trust & reliability and Durability & longevity; held back by charging & solar.
Check current availability and pricing at the retailer.
Check price on AmazonSee alternatives to the Anker SOLIX C2000 Gen 2 →At a glance
Anker SOLIX C2000 Gen 2 is a large (2 kwh class) model best suited to cpap traveler. It supplies 2,400 W of continuous AC output. BatteryRank scores it 68 out of 100 within its size class.
Our verdict on the Anker SOLIX C2000 Gen 2
Two things about this unit pull against each other. The 2,400 W inverter is generous for a 2,048 Wh pack, which means it will start almost anything in a house but empties in under an hour if you actually hold it near that ceiling. Trusted Reviews measured about 86 percent reaching AC, so plan on roughly 1,760 Wh of work. The 4,096 Wh expansion ceiling is what resolves the tension, turning a short sprint into something that lasts a night.
- You want one unit that starts heavy tools and still backs up the houseA 4,000 W surge allowance covers the inrush of a table saw or a sump pump, and the 10 ms switchover is quick enough to hold a desktop through a cutover.
- You expect the loads to grow after you buyAn expansion battery takes it to 4,096 Wh, so the ceiling doubles without changing the inverter, the outlets or anything else you have already learned to use.
- You want the whole house rather than the important half of it2,400 W of 120 V output covers circuits, not a service panel, and nothing here supports a 240 V load. It delivers 6,000 W with 240 V split-phase and expands to 26,880 Wh.
- It has to move between a car, a campsite and a garage regularlyAt 18.9 kg this is a deliberate two-hand lift, and 88 minutes to refill means it is not a unit you top up opportunistically between trips. The AC70 carries 768 Wh at 10.2 kg, roughly half the mass.
The honest limit: The 2,400 W rating is the reason people choose this over a 1 kWh unit, and it is honest, but output and endurance are separate purchases. At 2,400 W the measured 1,760 Wh of delivered energy lasts about three quarters of an hour. The inverter decides what you can plug in; only the pack, or an expansion battery, decides how long it stays on.
What our data can’t tell you: The 86 percent figure reached us as a percentage rather than a watt-hour reading, and its test load was never published. That makes it a ratio applied to the nameplate rather than a measured delivery figure, and no second source exists to check it against — read it as indicative, not settled.
BatteryRank Engineering Team · Last reviewed · Method
Capacity truth
The watt-hour number on the box isn't what reaches your devices. Rated on the label vs what actually leaves an outlet.
2,048 Wh. Show source
claimed sourceankersolix.com ↗2026-07-04The marketing number — total cell capacity.
1,761 Wh. Show source
verified source~86% of 2,048 Wh delivered on AC (Trusted Reviews)2026-07-04~86% of 2,048 Wh delivered on AC (Trusted Reviews) · 14% below the label
Also independently measured
- AC inverter efficiency
77–89.4 %. Show source
verified source~78.2% AC round-trip / ~80.8% DC; charging 77-89.4% by load (Trusted Reviews)2026-07-04- AC charge time
66 min. Show source
verified source~66 min full at ~2,300W (Trusted Reviews)2026-07-04
~78.2% AC round-trip / ~80.8% DC; charging 77-89.4% by load (Trusted Reviews)
~66 min full at ~2,300W (Trusted Reviews)
What it can run
Same sourced device assumptions used by our calculators, applied to this model's usable AC energy. Actual runtime varies with load, temperature, and standby draw.
| Device | Estimated runtime | Sourced assumption |
|---|---|---|
| CPAP (humidifier off) | about 24.5 nights | 9 W · |
| CPAP (heated humidifier on) | about 3.9 nights | 56 W · |
| Refrigerator (full-size) | about 28 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 98 hours | 18 W · |
| Laptop (65W charger) | about 54 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 88 full charges | 20 W · |
Who it fits
Mechanical matches against this model's own sourced specs — never invented sentiment, never a guess on a spec we don't have.
1761 Wh AC-delivered (measured) → multiple CPAP nights per charge
2400 W inverter, 1761 Wh AC-delivered (measured) → runs a fridge through an outage
2048 Wh, expandable, 12V DC out → long off-grid stays
How it scores
Four buyer pillars over seven sub-scores — computed from sourced data with a published formula, price-independent by design.
Power
Battery-side usable capacity and how much you can run at once.
Usable watt-hours and how far you can grow it with add-on batteries, versus its size class.
Continuous and surge wattage, outlet count, and USB-C fast-charging.
Trust
Owner reputation, safety record, warranty, and build durability.
Owner ratings, brand reputation, recall record, and warranty backing.
Rated cycle life, warranty length, cell chemistry, and weather sealing.
Charging
Wall and solar recharge speed.
Wall recharge speed, solar input, and multi-source charging.
Livability
62% dataLightweight, portable, and quiet enough to live with.
Weight, footprint, handle, and wheels, versus its size class.
Fan noise under load — quieter is better for bedrooms and CPAP use.
How this score is computed
The BatteryRank score is computed from sourced data with a published formula — ranked by data, not lab testing. Seven sub-scores blend into a 0–100 composite, grouped into four buyer pillars. Price is deliberately not a scoring input: prices move daily, so value intelligence lives in the price section above, judged against this model's own history.
| Pillar | Built from |
|---|---|
| Power | Capacity & expansion + Output & versatility |
| Trust | Trust & reliability + Durability & longevity |
| Charging | Charging & solar |
| Livability | Portability + Quiet / livability |
Scores are cohort-relative — each model is ranked against others in its size class. Missing inputs renormalize out rather than scoring zero (a model is never penalized for a spec nobody in its class publishes), and any figure resting on a documented estimate is tagged est. A full methodology page is coming.
Full specifications
Manufacturer-claimed unless marked verified (FCC/UL/DOE/lab). Tap or focus a figure to view its source.
Capacity & battery
- Battery-side usable capacity
2,048 Wh. Show source
claimed sourceankersolix.com ↗- Rated cycle life
4,000 cycles. Show source
claimed sourceankersolix.com ↗- Battery chemistry
LiFePO4. Show source
claimed sourceankersolix.com ↗- Max capacity with expansion
4,096 Wh. Show source
claimed sourceankersolix.com ↗- Rated capacity
2,048 Wh. Show source
claimed sourceankersolix.com ↗- Cycle-life threshold
80 %. Show source
claimed sourceankersolix.com ↗
Energy available from the battery before output-conversion losses. AC-delivered capacity is shown separately in Capacity Truth.
How many full charge-and-drain cycles before the battery drops to its rated threshold (shown alongside — brands rate to different thresholds, so never compare bare cycle counts).
The type of battery cell. LiFePO4 (LFP) cells last far more cycles and are more thermally stable than older lithium-ion (NMC) cells.
The largest total capacity this unit can reach once you add every supported expansion battery.
The battery's nameplate energy capacity — the headline number on the box. Battery-side usable and AC-delivered capacity are shown separately.
The remaining-capacity level the cycle rating is measured to. 3,000 cycles to 80% is a stronger battery than 3,000 cycles to 70% — always read the two numbers together.
Power output
- Continuous power output
2,400 W. Show source
claimed sourceankersolix.com ↗- Surge power output
4,000 W. Show source
claimed sourceankersolix.com ↗- AC outlets
4 outlets. Show source
claimed sourceankersolix.com ↗- USB-A ports
1 ports. Show source
claimed sourceankersolix.com ↗- USB-C ports
3 ports. Show source
claimed sourceankersolix.com ↗- USB-C max output
140 W. Show source
claimed sourceankersolix.com ↗- 12V car ports
1 ports. Show source
claimed sourceankersolix.com ↗- DC barrel ports
0 ports. Show source
claimed sourceankersolix.com ↗- Max combined output
2,400 W. Show source
claimed sourceankersolix.com ↗
The most power you can draw at once, sustained — this has to be higher than the running wattage of whatever you're plugging in.
A brief power spike the unit can absorb when a device first switches on — matters for things with motors or compressors, like fridges.
How many standard wall-style outlets are built in.
How many USB-A ports are built in, for charging older phones, lights, and accessories.
How many USB-C ports are built in — check the per-port wattage below if you need fast charging for a laptop.
The fastest a single USB-C port can charge a device — relevant for laptops and fast-charging phones.
How many car-socket (cigarette-lighter) style 12V outputs are built in — what CPAPs and car fridges plug into for the most efficient overnight running.
How many round barrel-style DC outputs are built in, used by routers, some lights, and older electronics.
The most power the unit can deliver across ALL ports at the same time — can be lower than the AC rating plus every USB port added up.
Charging & solar
- AC recharge speed
1,800 W. Show source
claimed sourceankersolix.com ↗- AC charge time (0–100%)
88 min. Show source
claimed sourceankersolix.com ↗- Max solar input
800 W. Show source
claimed sourceankersolix.com ↗
How fast the unit recharges from a wall outlet — higher means shorter waits between uses.
How long a full recharge takes from a wall outlet, start to finish.
The most solar panel wattage the unit can accept — undersized panels just mean slower charging, not damage, but oversizing this is wasted money.
Reliability & durability
- UPS switchover time
10 ms. Show source
claimed sourceankersolix.com ↗
How fast the unit takes over when grid power cuts out. Under ~20ms is fast enough that most electronics — including many CPAP machines — won't even blip.
Size & portability
- Weight
18.9 kg. Show source
claimed sourceankersolix.com ↗
How much the unit weighs on its own, without accessories — relevant for portability and carrying it up stairs during an outage.
What reviewers & owners report
Named outlets and marketplaces, each rating credited where it was published.
- Very low 9W idle draw (long fridge runtime) — Across reviewers ·
- light/compact for 2 kWh (~42 lb) — Across reviewers ·
- 4,000W peak — Across reviewers ·
- expandable to 4 kWh — Across reviewers ·
- fast ~58 min charge — Across reviewers ·
- RV TT-30 + home-backup inlet — Across reviewers ·
- 30 dB quiet — Across reviewers ·
- AC round-trip efficiency (~78%) not class-leading — Across reviewers ·
- premium price — Across reviewers ·
- thin US editorial coverage — Across reviewers ·
- no native 240V — Across reviewers ·
- Wirecutter: not a current pick / blocked to fetch
- Popular Mechanics: no dedicated review found / blocked
- None accessible this pass — no reachable measurement-channel review located — YouTube reviewers ·
Brand reputation: Trusted Reviews found no reliability red flags in testing; 4,000-cycle LFP + 10-yr design life; Reddit/forums not retrievable this pass
Sources: Trusted Reviews 4.5/5 (measured eff/runtime) https://www.trustedreviews.com/reviews/anker-solix-c2000; CNET blocked; Tom's Guide 404; PCMag blocked; OutdoorGearLab none; Popular Mechanics blocked; TechRadar 404; Wirecutter blocked; YouTube not retrievable; Reddit not retrievable; CPSC empty for SOLIX (2026-07-04)
What else to consider instead of the Anker SOLIX C2000 Gen 2
Same or adjacent size class, ordered by the price-independent composite. Every alternative is better than the Anker SOLIX C2000 Gen 2 at something and worse at something else, so each row states both halves — each one arithmetic on two sourced readings, with a dimension skipped rather than guessed when either side is missing a figure.
- DJI Power 2000score 75 · same size class
- Why you would switch
- The DJI Power 2000 carries 25% more continuous output (3,000 W vs 2,400 W), which decides what it can run at all.
- What you give up
- The Anker SOLIX C2000 Gen 2 is 14% lighter (18.9 kg vs 22 kg).
- Aferiy P280score 74 · same size class
- Why you would switch
- The Aferiy P280 carries 17% more continuous output (2,800 W vs 2,400 W), which decides what it can run at all.
- What you give up
- The Anker SOLIX C2000 Gen 2 is 13% lighter (18.9 kg vs 21.6 kg).
- Oupes Mega 2 Proscore 69 · same size class
- Why you would switch
- The Oupes Mega 2 Pro takes 25% more rated solar input (1,000 W vs 800 W) for off-grid recharging.
- What you give up
- The Anker SOLIX C2000 Gen 2 is 14% lighter (18.9 kg vs 22.1 kg).
- Bluetti Elite 200 v2score 68 · same size class
- Why you would switch
- The Bluetti Elite 200 v2 delivers 18% more usable AC energy (2,074 Wh vs 1,761 Wh).
- What you give up
- The Anker SOLIX C2000 Gen 2 is 22% lighter (18.9 kg vs 24.2 kg).
- EcoFlow DELTA 3 Max Plus (2048Wh)score 68 · same size class
- Why you would switch
- The EcoFlow DELTA 3 Max Plus (2048Wh) carries 25% more continuous output (3,000 W vs 2,400 W), which decides what it can run at all.
- What you give up
- The Anker SOLIX C2000 Gen 2 is 14% lighter (18.9 kg vs 22.1 kg).
Quick answers
Each answer restates a sourced figure from elsewhere on this page — nothing new, nothing guessed.
- How much does the Anker SOLIX C2000 Gen 2 weigh?
- 18.9 kg (41.7 lb), manufacturer-claimed, without accessories.
- What are the dimensions of the Anker SOLIX C2000 Gen 2?
- 459 × 250 × 257 mm (18.1 × 9.8 × 10.1 in), length × width × height, manufacturer-claimed.
- How much capacity does the Anker SOLIX C2000 Gen 2 deliver through an AC outlet?
- About 1,761 Wh of the rated 2,048 Wh reaches an AC outlet from a full charge — measured in independent testing.
- How long does the Anker SOLIX C2000 Gen 2 take to charge?
- 1 h 28 min from a wall outlet, 0 to 100%, manufacturer-claimed. Fast-charge modes and solar input differ — see the charging specs on this page.
- How many watts can the Anker SOLIX C2000 Gen 2 output?
- 2,400 W continuous AC output and 4,000 W surge output, manufacturer-claimed. Appliance startup demand must stay within the relevant limit.
- How much solar input can the Anker SOLIX C2000 Gen 2 accept?
- 800 W maximum solar input, manufacturer-claimed. Actual harvest depends on panel compatibility, sun, orientation, temperature, and conversion losses.
- What is the cycle-life rating of the Anker SOLIX C2000 Gen 2?
- 4,000 cycles to 80% remaining capacity, manufacturer-claimed. A cycle rating is not a calendar-life guarantee.
- Can the Anker SOLIX C2000 Gen 2 work as a UPS?
- Its manufacturer-claimed transfer time is 10 ms. Confirm that your connected equipment tolerates that transfer time; this is not the same as a zero-transfer online UPS.
- How far can the Anker SOLIX C2000 Gen 2 expand?
- Up to 4,096 Wh with compatible expansion hardware, manufacturer-claimed. The base-unit capacity and expansion-system capacity are shown separately.
Keep exploring
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- Refrigerator runtime guide
- CPAP nights-per-charge calculator
- How Many Watts Does a Chest Freezer Use?
- How Many Watts Does a 12V Camping Fridge Use?
- How Many Watts Does an RV Refrigerator Use?
- How Many Watts Does an Electric Cooler Use?
- Portable Power for a 12-Hour Outage
- Power an RV Refrigerator and Lights
- Complete CPAP Overnight Power Kit