Anker SOLIX C2000 Gen 2 vs Anker SOLIX S2000

The Anker SOLIX S2000 delivers more usable capacity than the Anker SOLIX C2000 Gen 2 (about 1,893 Wh vs 1,600 Wh). The Anker SOLIX C2000 Gen 2 has the stronger inverter (2,400 W vs 1,500 W continuous). A typical refrigerator runs about 24 h on the Anker SOLIX C2000 Gen 2 and 28.4 h on the Anker SOLIX S2000.

Specs verified 2026-10-18. Every value below links to its source.

Where they differ

Anker SOLIX S2000: more usable capacity (1,893 Wh vs 1,600 Wh, Anker SOLIX C2000 Gen 2).
Anker SOLIX C2000 Gen 2: higher continuous AC output (2,400 W vs 1,500 W, Anker SOLIX S2000).
Anker SOLIX C2000 Gen 2: higher surge rating (4,000 W vs 3,000 W, Anker SOLIX S2000).
Anker SOLIX S2000: lighter (35.7 lb vs 41.7 lb, Anker SOLIX C2000 Gen 2).
Anker SOLIX S2000: lower list price (999.99 USD vs 1,199.99 USD, Anker SOLIX C2000 Gen 2).
Anker SOLIX S2000: lower price per usable Wh ($0.53 vs $0.75, Anker SOLIX C2000 Gen 2), the fairest value measure across sizes.
Anker SOLIX C2000 Gen 2: faster AC charging (1,800 W vs 1,600 W, Anker SOLIX S2000).
Anker SOLIX C2000 Gen 2: more solar input (800 W vs 400 W, Anker SOLIX S2000).

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Specs side by side

Spec	Anker SOLIX C2000 Gen 2	Anker SOLIX S2000
Rated capacity	2,048 Wh^[source]Specs 'Cell Capacity 51.2V / 40000mAh / 2,048Wh'. Model A1783; not the same product as the S2000 or F2000.	2,010 Wh^[source]Listed as 2,010 Wh. Not the same product as the SOLIX C2000 Gen 2 or F2000.
Usable capacity (measured)	1,600 Wh^[source]Notebookcheck drew 'a good 1,600 Wh' at a ~200 W continuous load (just under 79%), and about 1,850 Wh at 1,800 W. That was the European 230 V version; The Solar Lab (US unit) reported ~89% efficiency but no Wh figure.	1,893 Wh^[source]techtest.org measured 1,778-1,969 Wh depending on load, averaging 1,893 Wh (~95% of the rating). That test used the EU 230 V version; no US-unit discharge test found.
AC continuous output	2,400 W^[source]'AC Output (NEMA 5-20R) 120V~ 20A Max, 60Hz, 2400W Max'.	1,500 W^[source]'1,500W Rated \| 3,000W Peak \| Pure Sine Wave AC'.
AC surge output	4,000 W^[source]Specs 'Peak Power 4000W'.	3,000 W^[source]
240 V output	No^[source]All AC outputs are 120 V: 'AC Output (NEMA 5-20R) 120V~ 20A Max, 60Hz' and 'AC Output (TT-30R) 120V~ 20A Max, 60Hz'.	Not publishedOfficial page text gives only '1,500W Rated / 3,000W Peak \| Pure Sine Wave AC' and '8 Outlets'; voltage is in spec images only. Official user guide (support.anker.com/s/articlemanual?pn=AS220) is a JS app with no retrievable PDF. Only third-party manual mirrors show 120V.
Battery chemistry	LiFePO4^[source]Specs 'Battery Type LFP'.	LiFePO4^[source]'314Ah LFP cells'.
Cycle life	4,000 cycles to 80% capacity^[source]Spec table 'Cycle Life 4000 Cycles'; comparison table '4,000 Cycles to 80% Capacity'. The page's structured spec data conflicts with '3000+ Cycles'.	6,000 cycles to 80% capacity; 10,000 cycles to 60% capacity^[source]Spec table image says '10,000 Cycles'; the comparison table qualifies it as 6,000 to 80% and 10,000 to 60%.
AC charging	1,800 W^[source]US spec 'AC Input 120V~ 15A Max, 1800W Max, 12A (Continuous)'; 100% in 88 min on AC alone. AC + solar together reach 2,600 W (100% in 58 min). The EU version charges at up to 2,300 W.	1,600 W^[source]1,600 W only with UltraFast Mode turned on in the Anker app; default AC input is capped at 1,150 W.
Max solar input	800 W^[source]'PV /XT-60i Input 11-60V⎓17A Max, 800W'.	400 W^[source]Spec table image on the official page: 'Solar Input 400W Max'.
Expandable	Yes^[source]'Up to 4kWh Expandable Capacity' with one BP2000 (Gen 2) expansion battery.	No^[source]Official comparison table: Expandable Battery 'No'.
UPS / EPS switchover	10 ms^[source]Specs 'UPS 10 ms'.	10 ms^[source]Spec table says '≤10 ms'.
Weight	41.7 lb^[source]Comparison table '41.7 lb (18.9 kg)'; spec table 'Net Weight 18.9 kg'. Structured spec data says '41 lb'.	35.7 lb^[source]
Warranty	5 years^[source]From the page's structured spec data ('Warranty: 5 Years'); the visible page only says 'Hassle-Free Warranty' and '10 Year Lifespan'.	5 years^[source]
List price	$1,199.99^[source]Regular price $1,199.99; sale price $999.99 ('Saved $200.00') seen 2026-10-18. Page notes orders ship starting October 20.	$999.99^[source]Compare-at price $999.99; sale price $649.99 ('Saved $350.00', offer ending Oct. 18) seen 2026-10-18.
Usable capacity used for runtimes	1,600 Wh	1,893 Wh

Runtime on one charge

Appliance	Average draw	Anker SOLIX C2000 Gen 2	Anker SOLIX S2000
Refrigerator	67 W	24 h	28.4 h
Chest freezer	25 W	2.7 days	3.2 days
CPAP (no humidifier)	45 W	35.6 h	42.1 h
CPAP with heated humidifier	90 W	17.8 h	21 h
Sump pump (1/3 hp)	650 W	2.5 h	2.9 h
Sump pump (1/2 hp)	925 W	1.7 h	2 h
Gas furnace blower (1/2 hp)	550 W	2.9 h	3.4 h
Window AC (5,000 BTU)	347 W	4.6 h	5.5 h
Microwave	900 W	1.8 h	2.1 h
Coffee maker	1200 W	1.3 h	1.6 h
Laptop charger	60 W	26.7 h	31.6 h
Phone charger	20 W	3.3 days	3.9 days
Wi-Fi router / modem	15 W	4.4 days	5.3 days
TV (LED, 32-55 inch)	68 W	23.5 h	27.8 h
LED light bulb (each)	9 W	7.4 days	8.8 days
Space heater	1500 W	1.1 h	1.3 h
Oxygen concentrator (home, 5 L/min)	350 W	4.6 h	5.4 h
Starlink (Standard kit)	88 W	18.2 h	21.5 h
Desktop PC + monitor	90 W	17.8 h	21 h
Electric blanket (queen)	260 W	6.2 h	7.3 h
Box fan (20 inch)	83 W	19.3 h	22.8 h
Dehumidifier (35-50 pint)	487 W	3.3 h	3.9 h
Portable air conditioner (8,000-10,000 BTU)	1210 W	1.3 h	1.6 h
Electric kettle	1500 W	1.1 h	1.3 h
Portable induction cooktop (single burner)	1800 W	0.9 h	No
Air fryer	1500 W	1.1 h	1.3 h
Mini fridge (compact, ~3 cu ft)	25 W	2.7 days	3.2 days
Garage door opener	720 W	2.2 h	2.6 h

Runtime = usable capacity ÷ average draw, the same formula for both models (no idle draw added to either), after checking continuous output and startup surge. Usable capacity is an independent test's measured figure, or 80% of rated where none exists. See the methodology.