C1000 Gen 2
- you run loads up to 2,000W
- you power a van or campsite: 12V socket, 600W solar
- you carry it: 24.9 lb
S2000
- you want twice the runtime: 2,010Wh
- it will sit on standby: 6W idle, 6,000 cycles
- your loads stay under 1,500W
Prices and stock checked by our price engine on November 5, 2026 at 6:59 AM EST. Each product is rechecked several times a day; the time refreshes when you load the page.
$180 more buys a second night of backup, not a stronger inverter.
The Anker SOLIX C1000 Gen 2 stores 1,024Wh and delivers 2,000W from five outlets, with a 12V car socket, 600W of solar and a 49-minute wall refill, at 24.9 lb. The Anker SOLIX S2000 stores 2,010Wh and delivers 1,500W, rated for 6,000 cycles to 80% and quoted at 6W idle, but takes 400W of solar and has no 12V socket, at 35.7 lb. Both switch to battery in 10ms and neither takes an extra battery. For a fridge, a router and a CPAP through a long outage, the S2000 lasts twice as long; for a campsite, a van or loads up to 2,000W, it’s the C1000 Gen 2.
Below: every difference with numbers, a 20-second calculator for your own gear, seven modeled situations, a third option, and what published tests found on each.
The S2000 costs $180 more today for nearly twice the energy and 2,000 more rated cycles. The C1000 Gen 2 answers with 500W more output, a 12V socket, 600W of solar input, a faster refill and 10.8 lb less weight. Both switch in 10ms; neither expands.
- you run up to 2,000W
- you need a 12V socket
- you carry it: 24.9 lb
- you want 2,010Wh in one box
- you want 6,000 cycles
- a PC or CPAP runs on it all night
The five differences that decide it
The gaps that change what you can run or how long, with the better spec flagged. Both use LFP, both switch to battery in 10ms, both have five AC outlets, and Anker gives both 5 years of warranty (the C1000 Gen 2 once registered).
Will it run your setup? Check in 20 seconds
Estimates use 85% usable capacity and 70% of rated solar output. Real results vary with temperature, inverter load, shade and appliance cycling. Fridge and freezer watts are daily averages and do not include compressor startup surges.
Runtime by appliance, one at a time
Simple energy estimates, not measured runtimes. About 870Wh usable on the C1000 Gen 2 and 1,709Wh on the S2000; neither takes an extra battery.
Appliance for appliance, the S2000 lasts twice as long as the C1000 Gen 2.
Same appliance, same watts: the gap is always the size of the battery.Get our Black Friday alerts for Anker SOLIX
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The price gap, in numbers
The Anker SOLIX S2000 costs $180 more than the Anker SOLIX C1000 Gen 2 and adds 986Wh: that is $0.18 per extra Wh, against $0.54 per Wh for the C1000 Gen 2.
Prices refresh daily from Anker US.The cards above rank cost per Wh and the lifetime figure, price divided by rated cycles times capacity, at today’s prices; read it as a ranking, not a bill. What the gap doesn’t buy is output: the S2000 stops at 1,500W. Anker US prices move often; the figures here are refreshed daily by our price engine.
The third option: the Anker SOLIX C2000 Gen 2 at $999.99
Anker SOLIX C2000 Gen 2: $999.99 today
Both answers in one box: the S2000’s 2kWh class with more power than the C1000 Gen 2. It stores 2,048Wh and delivers 2,400W from five outlets plus a TT-30, takes 800W of solar, switches in 10ms and accepts one BP2000 Gen 2 for 4,096Wh, at 41.7 lb. Pick it if you need both runtime and loads above 1,500W. Our C2000 Gen 2 review goes deeper. See the C2000 Gen 2 at Anker.
Seven modeled situations, worked out
Same formula as the calculator above: 85% of the rated capacity, no extra battery (neither takes one). The fridge averages 60W.
24-hour outage, essentials only
The S2000 runs about 19 hours, close to a full day; the C1000 Gen 2 about 9.5 hours, an evening and a night. Gizmodo kept a fridge going for 42 hours on the S2000.
Two kitchen loads at once
Within the C1000 Gen 2’s 2,000W; above the S2000’s 1,500W, so it shuts the output off. One at a time, both run a microwave. SurgePad helps heating appliances only, not a microwave or a blender.
Home office through an outage
Both switch in 10ms, inside the roughly 16ms a desktop PC power supply rides through. The S2000 then lasts about twice as long: about 22 hours against 11.
A 12V car fridge on a weekend trip
The C1000 Gen 2 has a 12V, 10A car socket. The S2000 has none, so the fridge runs from its AC adapter, with inverter losses. By our formula the S2000 still lasts longer, about 38 hours against 19, before the AC adapter’s losses.
Refill from the wall before a storm
Same 1,600W fast input, twice the battery to fill. The C1000 Gen 2 needs a battery above 68°F for UltraFast; the S2000 charges at 1,150W (2.3 hours) until you switch UltraFast on in the app.
Refill from solar, each at its maximum
About 2.4 hours on the C1000 Gen 2, about 7.2 on the S2000: more than a full day of sun at its 400W limit. Off grid for days, that gap matters more than capacity.
Carrying it
The C1000 Gen 2 lifts with one hand, per CleanTechnica. The S2000 is a compact tower, 8.2 × 11.1 × 12.7 in, but reviewers wished for a second handle.
Nine more differences, the spec sheet and the box
Smaller gaps that rarely decide the purchase, then the full specifications and what ships in the box.
C1000 Gen 2 and S2000 weight, dimensions and full specifications
Weight: 24.9 lb for the C1000 Gen 2 and 35.7 lb for the S2000. Dimensions: 15.1 × 8.2 × 9.6 in and 8.2 × 11.1 × 12.7 in. Everything else is in the sheet below.
Anker SOLIX C1000 Gen 2 and Anker SOLIX S2000 full specifications
Every published figure for both units, grouped. Green marks the better value.
What’s in the box
C1000 Gen 2
- C1000 Gen 2 power station1,024Wh, 24.9 lb
- AC charging cable
- User manual
- Solar cable sold separately
S2000
- S2000 power station2,010Wh, 35.7 lb
- AC charging cable
- User guide
- Solar cable sold separatelyPV to XT60i, per the manual
From the Anker US pages and the S2000 user guide.
07 · ChargingHow fast each one refills
Shorter bar, faster refill. Each row is scaled to its slower unit.
C1000 Gen 2: MacRumors recharged it to full in 49 minutes from a standard plug at about 1,200WS2000: ESS News measured about 1.2 hours to 80% and 1.7 hours to full from a 20A household circuit
Our solar times assume panels deliver 70% of their rating; the brands’ figures assume ideal sun.
Every port, side by side
C1000 Gen 2
S2000
Practical consequence: the C1000 Gen 2 has five AC outlets, two USB-C, two USB-A and a 12V car socket. The S2000 has five AC outlets (three front, two rear), two USB-C and one USB-A, and no 12V socket: a 12V fridge or a tire inflator needs its AC adapter.
09 · NoiseNoise: C1000 Gen 2 vs S2000
Anker gives the Anker SOLIX C1000 Gen 2 20dB and the Anker SOLIX S2000 30dB, both without conditions. Notebookcheck measured about 45dB at 1 m from the C1000 Gen 2 under heavy use; Android Authority found the S2000 uncomfortably loud in UltraFast charging.
Both get loud when fast charging; both are quiet at light loads.Every figure we found, with its source
What reviewers heard: Near maximum wattage the fan gets frustratingly loud (OutdoorGearLab); fans kick on loudly at very high charging rates (CleanTechnica).
What reviewers heard: Fans run only under load or fast charging (ESS News); quiet enough for conversation under heavy load (Gizmodo); UltraFast charging uncomfortably loud (Android Authority).
Measured by a tester Brand figure
- Charge during the day, or use the S2000’s Silent Mode schedule and the C1000 Gen 2’s standard charging speed overnight.
Cold and heat: C1000 Gen 2 vs S2000
Same ranges on the Anker SOLIX C1000 Gen 2 and the Anker SOLIX S2000: charging from 32°F to 104°F, running from −4°F to 104°F, per Anker.
Figures from Anker US and the S2000 user guide.- Charge either one indoors in winter: neither charges below 32°F.
- On the C1000 Gen 2, UltraFast charging only engages above 68°F of battery temperature (Anker).
App, UPS and smart features
Same 10ms UPS. The Anker SOLIX S2000 has more app modes, Storm Guard and Self-Consumption among them, but most need Wi-Fi.
Neither takes an extra battery.Green zone: a switch under about 16ms, which most desktop PCs ride through without restarting.
Can it follow your solar production? The Anker SOLIX S2000 has a Self-Consumption mode and a Custom 24/7 schedule; Anker lists neither for the Anker SOLIX C1000 Gen 2.
Can you add a battery later? Neither the Anker SOLIX C1000 Gen 2 nor the Anker SOLIX S2000 takes an extra battery.
Does it work as a UPS? Both switch to battery in 10ms, per Anker, inside the roughly 16ms a desktop PC power supply rides through. ESS News saw office equipment ride through simulated outages on the Anker SOLIX S2000.
Can it charge off-peak? Both have Time-of-Use in the Anker app. On the Anker SOLIX S2000, Anker’s FAQ says it is unavailable on Bluetooth alone.
Can it run a heater or kettle above its rating? Both push heating appliances past their rating with SurgePad. It does not help motors.
How does the app connect? Both use the Anker app over Wi-Fi or Bluetooth. On the Anker SOLIX S2000, Bluetooth alone turns off Time-of-Use, remote control, Storm Guard, Custom mode, Self-Consumption and history.
Warranty and support
Same 5 years on the Anker SOLIX C1000 Gen 2 and the Anker SOLIX S2000, per Anker’s US comparison table; on the C1000 Gen 2, the 5 years apply once it’s registered with Anker. The S2000 is rated for 2,000 more cycles.
Same term, once the C1000 Gen 2 is registered. Register the day it arrives.Subject to each brand’s warranty terms and eligibility.
Anker rates the C1000 Gen 2 at 4,000 cycles and the S2000 at 6,000 to 80% capacity, or 10,000 to 60%. At one full cycle a day, that is about 11 and 16 years. Calendar aging and heat also reduce capacity, so read the ratings as a ceiling.
- Register either one with Anker when it arrives and keep proof of purchase: Anker’s registration page says that activates the coverage.
What reviewers report
We have not lab-tested these two units. Here is what 9 published reviews found, with the source, author and date for each point. Reviews of UK and EU units are flagged: those models charge from 230V outlets and have different sockets, so their charge times and outlet findings don’t carry over to US units.
C1000 Gen 2: OutdoorGearLab (July 2026), Notebookcheck (December 2025, EU unit), CleanTechnica (September 2025), MacRumors (December 2025), Techaeris (November 2025)S2000: ESS News (May 2026), Android Authority (June 2026), CleanTechnica (June 2026), Gizmodo (July 2026), all US units
Usable capacity
- C1000 Gen 2Reviewer Their load bank measured 890Wh of the rated 1,024Wh, about 87%, well above average. OutdoorGearLab, Kenji Mowrey, July 2026
- C1000 Gen 2Reviewer At a steady 250W load (230V) it gave 850Wh, 83%, before stopping at 1%; lower with fluctuating loads. Notebookcheck, Marcus Schwarten, December 2025, EU unit
- C1000 Gen 2Reviewer Ran a full Mac setup (MacBook Pro, Studio Display, lights) for almost 24 hours. MacRumors, Juli Clover, December 2025
- S2000Reviewer Kept a refrigerator going for 42 hours before the battery reached 5%. Gizmodo, Wes Davis, July 2026
- S2000Reviewer Just over 60 hours on a fridge, with a kettle used three times and a microwave once. Android Authority, Edgar Cervantes, June 2026
Charging
- C1000 Gen 2Reviewer Without the app’s boost mode AC charging took just under 55 minutes; 1,110Wh flowed in. EU charging power, flag. Notebookcheck, Marcus Schwarten, December 2025, EU unit
- C1000 Gen 2Reviewer Recharged to full in 49 minutes from a standard plug, drawing about 1,200W; 1,600W needs enabling. MacRumors, Juli Clover, December 2025
- S2000Reviewer About 1.2 hours to 80% and 1.7 hours to full from a 20A household circuit. ESS News, Andrew Riha, May 2026
- S2000Reviewer About 1.7 hours from 10% to full in UltraFast mode; 80% in 4.5 hours from a 400W panel in ideal sun. Android Authority, June 2026
Noise and heat
- C1000 Gen 2Reviewer Near maximum wattage the fan gets frustratingly loud, an issue carried over from the first generation. OutdoorGearLab, Kenji Mowrey, July 2026
- C1000 Gen 2Reviewer Measured about 45dB at 1m under high output and fast AC charging; much quieter at low load. Notebookcheck, Marcus Schwarten, December 2025, EU unit
- C1000 Gen 2Reviewer At very high charging rates the fans kick on loudly. CleanTechnica, Kyle Field, September 2025
- C1000 Gen 2Reviewer Fan noise at full blast is loud and irritating, but only under heavy load. MacRumors, Juli Clover, December 2025
UPS and output
- C1000 Gen 2Reviewer It ran a refrigerator and gear flawlessly over a 4-day Cybertruck road trip used as a buffer battery. CleanTechnica, Kyle Field, September 2025
- S2000Reviewer Dropped only to 99% after 10 hours on standby with AC on, about 2W. ESS News, May 2026
- S2000Reviewer A 600 to 700W window air conditioner most likely never started its compressor. Gizmodo, July 2026
- S2000Reviewer Can’t run electric heaters, cooktops or double induction burners; ran a fridge, lights, internet and a phone charger at once. CleanTechnica, Kyle Field, June 2026
Daily use and issues
- C1000 Gen 2Reviewer Measured weight 25.2 lb, one of the best power-to-weight ratios they have tested. OutdoorGearLab, Kenji Mowrey, July 2026
- C1000 Gen 2Reviewer Compared with Gen 1 it lost the expansion port and the built-in LED light. Notebookcheck, Marcus Schwarten, December 2025, EU unit
- C1000 Gen 2Reviewer At 24.9 lb it is easy to lift with one hand. CleanTechnica, Kyle Field, September 2025
- C1000 Gen 2Reviewer App over Wi-Fi or Bluetooth shows draw and time left, toggles outputs and sets charging power. MacRumors, Juli Clover, December 2025
- C1000 Gen 2Reviewer The app can switch AC and DC outputs on or off remotely and toggles the 1,600W fast-charge mode. Techaeris, Alex Hernandez, November 2025
- S2000Reviewer Cons: only three USB ports and no handle that makes it truly portable. Android Authority, June 2026
- S2000Reviewer Cons: 400W solar input is modest, no TT-30 RV plug, and a second handle would help. ESS News, May 2026
Practical limits before you buy
- 1,500W is a hard ceiling on the S2000. A microwave and a coffee maker together overload it, and Gizmodo’s window AC didn’t start. SurgePad’s 2,600W covers heating appliances only, and not while it charges from the wall.
- Neither takes an extra battery. 1,024Wh and 2,010Wh are the ceilings; the C2000 Gen 2 below takes one.
- The S2000 has no 12V socket. A 12V fridge needs its AC adapter.
- Use Wi-Fi with the S2000. Its 1,600W UltraFast charging and Silent Mode schedule live in the app, and on Bluetooth only, Time-of-Use, Storm Guard and remote control are off, per Anker.
- Solar cables are extra on both, per the Anker box lists.
- Mind the cycle figures. Anker’s 10,000 cycles for the S2000 are to 60% capacity; to the usual 80% it is 6,000, still the higher rating of the two.
- C1000 Gen 2, per its US documentation: UltraFast charging only activates when battery temperature is above 68F (20C); charging at 32-68F is significantly slower.
- C1000 Gen 2, per its US documentation: USB-A and USB-C1 share a 20W total limit; only USB-C2 reaches 140W.
- C1000 Gen 2, per its US documentation: Not expandable; Anker recommends the original C1000 for users who need extra capacity.
- C1000 Gen 2, per its US documentation: Normal AC charging 1,200W max; AC bypass 1,800W max; solar 600W, 60V max.
Frequently asked questions
What is the difference between the Anker C1000 Gen 2 and the S2000?
The S2000 stores 2,010Wh, nearly twice the C1000 Gen 2’s 1,024Wh, and is rated for 6,000 cycles against 4,000. The C1000 Gen 2 delivers 2,000W against 1,500W, takes 600W of solar against 400W, has a 12V socket and weighs 24.9 lb against 35.7 lb. Both switch in 10ms and neither expands.
Which is cheaper?
The Anker SOLIX C1000 Gen 2 costs $180 less today: $549.99, against $729.99 for the Anker SOLIX S2000. Prices refresh daily; the price section above has the full breakdown.
How long will each run a refrigerator?
At a 60W average and 85% usable capacity, about 15 hours on the C1000 Gen 2 and 28 hours on the S2000. Anker quotes up to 35 hours for the S2000 on its test fridge, and Gizmodo ran a real fridge for 42 hours.
Can the S2000 run a microwave?
A typical 1,000 to 1,200W microwave, yes, on its own. With a coffee maker or a toaster at the same time, no: the S2000 stops at 1,500W. The C1000 Gen 2 handles 2,000W.
Can either be expanded?
No. Neither has a battery port. The C2000 Gen 2 takes one BP2000 Expansion Battery (Gen 2) for 4,096Wh.
Which is better for camping or a van?
The C1000 Gen 2: 24.9 lb, a 12V car socket and 600W of solar input. The S2000 has no 12V socket and takes 400W of solar.
Which is better for home backup?
For essentials under 1,500W, the S2000: twice the energy, 6W idle and 6,000 rated cycles, with the same 10ms switchover.
What warranty do they have?
5 years on both, per Anker’s US comparison table on the S2000 page. On the C1000 Gen 2, the 5 years apply once it’s registered with Anker.
Related comparisons and reviews
How we compared and sources
Research-based comparison. We have not physically tested these two units. Specs come from Anker US: the C1000 Gen 2 and S2000 product pages, the comparison table on the S2000 page and the S2000 user guide. Usage observations are attributed to named reviewers. Checked on October 31, 2026.
- Specs: Anker US, C1000 Gen 2 and Anker US, S2000, read on October 31, 2026, including Anker’s comparison table on the S2000 page; ports, modes and temperatures of the S2000 from its US user guide (AS220).
- Reviewer reports on the C1000 Gen 2: OutdoorGearLab, Kenji Mowrey, July 2026, Notebookcheck, Marcus Schwarten, December 2025, EU unit, CleanTechnica, Kyle Field, September 2025, MacRumors, Juli Clover, December 2025, Techaeris, Alex Hernandez, November 2025.
- Reviewer reports on the S2000 (US units): ESS News (Andrew Riha, May 2026), Android Authority (Edgar Cervantes, June 2026), CleanTechnica (Kyle Field, June 2026) and Gizmodo (Wes Davis, July 2026).
- Runtime = capacity × 0.85 ÷ watts. Solar harvest = min(panel watts, max input) × sun hours × 0.70. Cost per lifetime kWh = price ÷ (cycles × capacity in kWh).
Twice the battery and 6,000 cycles on the S2000; 500W more, a 12V socket and 10.8 lb less on the C1000 Gen 2.
Prices checked November 5, 2026 at 6:59 AM EST
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Originally published: November 4, 2026