Head-to-head test
Anker SOLIX C800 vs Anker SOLIX S5000
Real-world runtimes, scenario verdicts, and ownership costs compared — which wins for your use case.
Full profiles: Anker SOLIX C800 → · Anker SOLIX S5000 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Both carry the Anker name, but they're built for different buyers. The SOLIX C800 (768Wh, 1,200W) and the SOLIX S5000 (5,024Wh, 4,500W) come from different product lines with different engineering priorities and a $1,901 price gap. The SOLIX S5000 has a slight edge, but the margin is close enough that your use case should break the tie.
What the spec gap means in practice: the SOLIX S5000's 4,500W inverter has the headroom for a window AC, a full-size fridge, and power tools. The SOLIX C800's 1,200W inverter handles a fridge and smaller tools fine, but a window AC or several big loads at once pushes past it. On stamina, the SOLIX S5000 keeps a fridge alive for roughly 28 hours vs the SOLIX C800's 4 hours. The cost? Portability. At 97 lbs, the SOLIX S5000 is heavy enough to make you think twice about moving it. The SOLIX C800 at 23.8 lbs is something one person can actually carry.
Pick the SOLIX S5000 if your primary use is weekend camping or 8-hour blackout. Go with the SOLIX C800 if its specific strengths below line up better with your use. Keep scrolling for the full breakdown. The scenario verdicts below hold a few surprises.
Bench Notes
What each unit does well, where it falls short, and the trade-offs that matter.
Anker SOLIX C800
The 1,200W inverter handles most daily devices like laptops, blenders, and TVs, but will struggle with heating elements that require over 1500W. At only 23.8 lbs, it is exceptionally portable. You can easily carry it one-handed to a campsite or tailgating party.
Strengths
- +Lighter by 73.2 lb
Trade-offs
- –Weaker inverter (-3,300W) limits appliance compatibility.
- –Sealed capacity — the SOLIX S5000 can add batteries to grow past 768Wh; this one can't.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the SOLIX S5000's 6,000, so it wears out sooner.
Anker SOLIX S5000
With a massive 4,500W output (and 8,000W surge), the SOLIX S5000 can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 97 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion. A standout feature is the value proposition: at roughly $0.50 per watt-hour, it's one of the most cost-effective options on the market.
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Significantly heavier (+73.2 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
SOLIX S5000
The SOLIX C800 doesn't finish — 653Wh usable against the 2,100Wh this needs leaves it 1,447Wh short, about 31% of the scenario covered. The SOLIX S5000 covers it with 2,170Wh to spare.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
SOLIX S5000
The SOLIX C800 doesn't finish — 653Wh usable against the 1,645Wh this needs leaves it 992Wh short, about 40% of the scenario covered. The SOLIX S5000 covers it with 2,625Wh to spare.
Battery budget usedlower = more headroom
LOAD Fridge 150W×8h · Router + Modem 20W×8h · LED Lights (4 bulbs) 40W×6h · Phone Charger 15W×3h
SCN-03 · 8 hours · needs 320Wh
CPAP Overnight
Sleep therapy without interruption — the #1 medical use case
Either unit
A CPAP is about 40W for eight hours, so both of these cover the night at least twice over — capacity isn't the question here. The only published difference is fan noise, and it can't settle this: the SOLIX S5000 is rated 30dB and the SOLIX C800 45dB, but both are Anker's own ratings on one convention, best-case floors rather than readings at a CPAP's draw. Neither settles which box is quieter at a bedside. Only the SOLIX S5000 is still sold, so a new purchase here is just the SOLIX S5000; the SOLIX C800 is a used-market question.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
SOLIX S5000
The SOLIX C800 doesn't finish — 653Wh usable against the 910Wh this needs leaves it 257Wh short, about 72% of the scenario covered. The SOLIX S5000 covers it with 3,360Wh to spare.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
SOLIX S5000
The SOLIX C800 comes up just short — it needs 670Wh and has 653Wh usable, a 17Wh gap (its nameplate 768Wh actually clears this — the flat 15% conversion allowance is what tips it under). Trim that much — one small appliance's worth across the day — and it finishes. The SOLIX S5000 covers it outright with 3,600Wh to spare.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Neither unit
Neither unit covers this scenario's 4,685Wh: the SOLIX C800 comes up 4,032Wh short (about 14% covered), the SOLIX S5000 415Wh (91%) (its nameplate 5,024Wh actually clears this — the flat 15% conversion allowance is what tips it under). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: SOLIX S5000 runs 20.8h vs 3.2h.
$2,499.99 list · direct from Anker
Planning for more than this? Describe your whole setup and get it sized →
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–284.7hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–56.9hHigh-Draw Appliances
These reveal the real limitsscale 0–4.3h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
July 10, 2026
Verdict: the SOLIX S5000, on Power Score margin
These two units are closely matched on individual specs, but our Power Score analysis gives the SOLIX S5000 the edge with a composite score of 6,378 vs 2,163.
Overall score margin: 2,163 vs 6,378 (−194.9%)
List prices as of July 10, 2026. The links below open Anker's current price.
$2,499.99 · direct from Anker
Last checked 2 hours ago. Prices move — check before you buy.
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 10, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, Home Backup, CPAP, Tailgating, Food Truck, Apartment Balcony, Camping.
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, SOLIX C800 rates 4.1/5 (47th percentile of 20 Compact-class units), and SOLIX S5000 rates 4.6/5 (74th percentile of 20 Home Backup-class units).
How the class ranking is computed →Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
SOLIX S5000: 97 lbs Is a Commitment
At 97 lbs, this is manageable but not fun to move. That's heavier than a large checked suitcase. How much it costs you depends on whether it rolls — wheels and a telescoping handle change the job completely at this weight, and our spec record doesn't track them, so look at the product photos before you plan on carrying it from the car.
SOLIX C800: 45dB Published
45dB is about as loud as a running refrigerator. The SOLIX S5000 is rated 30dB — lower, but the two ratings need not describe the same operating regime even within one maker's own range, so the two figures are not a like-for-like gap. For most people, fan noise around 45dB and up is where sleep starts to suffer.
SOLIX C800: Fixed Capacity
The SOLIX C800 is sealed at 768Wh — fine if that covers you, but it's the ceiling. By contrast the SOLIX S5000 can add expansion batteries, though the first thing it has over the SOLIX C800 is its own 5,024Wh base — expansion is the step after that, for the buyer who would outgrow 5,024Wh as well.
Surge Power: Inverter Quality Indicator
The SOLIX S5000 has a 1.8× surge-to-continuous ratio vs the SOLIX C800's 1.3×, and the higher absolute ceiling with it — 8,000W against 1,600W. Neither clears the 2× rule of thumb usually quoted for motor startups, so read these as two ceilings rather than two grades of inverter. What decides whether a given motor starts is the ceiling, not the ratio: the SOLIX C800 still surges to 1,600W, so check the startup draw of the heaviest thing you plan to run against that figure rather than assuming it trips.
UPS Switchover: ≤10ms vs ≤20ms
Both list a UPS mode, at different rated speeds. The SOLIX S5000 is rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. The SOLIX C800 is rated ≤20ms — fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. If a computer with unsaved work is the thing being protected, the stated class is worth the attention; nothing here is a lab result.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here.
Battery Lifespan in Real Years
The SOLIX S5000 is rated for 6,000 cycles vs 3,000. In real life: at daily use, that's 16.4 vs 8.2 years. At weekend use (twice a week), it's 58 vs 29 years. One caution reading years across different sizes: a cycle is 5,024Wh on the SOLIX S5000 and 768Wh on the SOLIX C800, so count lifetime energy — roughly 30,144 kWh against 2,304 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
Full record above — the Test Desk pick is the SOLIX S5000.
Check SOLIX S5000 price →Ownership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
The SOLIX C800 is no longer sold, so there is no price to work its cost per kWh from, and this comparison doesn't quote one. On what you can actually buy today, the SOLIX S5000 works out at $0.08/kWh over its rated life. If you already own the SOLIX C800, the hardware comparison still holds: over its rated life the SOLIX C800 delivers about 2,304 kWh and the SOLIX S5000 about 30,144 kWh.
Growth path
SOLIX C800
FIXED CAPACITYFixed at 768Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 300W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
SOLIX S5000
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 5,024Wh.
Accepts up to 3,000W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are Anker-specific. You're investing in the Anker ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Growth only counts if you can still buy in, and the SOLIX C800 is no longer sold (Anker points owners to the SOLIX C800X). That leaves the SOLIX S5000: it starts at 5,024Wh and takes Anker expansion batteries, so the ceiling moves if your needs do. The SOLIX C800's fixed 768Wh still matters if you already own one, but it isn't a reason to pick it over the SOLIX S5000.
The Bottom Line
The full picture comes down to this. The SOLIX S5000 edges ahead on our overall analysis, but the margin is narrow enough that your specific use case should drive the decision. Review the scenario verdicts above — if the SOLIX C800 wins in the scenarios that match your life, it's the right choice regardless of aggregate scores.
If neither the SOLIX C800 nor the SOLIX S5000 feels like the right fit, your power needs probably sit outside what these two target. Use our comparison tool above to explore alternatives that better match your specific wattage and runtime requirements. Prices on portable power stations fluctuate frequently. Both Anker discount regularly, so check the current price before committing. Prime Day and Black Friday pricing typically drops 20-30%.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
How does the 4,256Wh capacity difference actually affect daily use?
The SOLIX S5000's 5,024Wh battery keeps a mini-fridge running for roughly 28 hours vs the SOLIX C800's 4 hours. Where it really matters: during an 8-hour blackout running your fridge, router, lights, AND charging your phone simultaneously (about 1,645Wh total), the SOLIX S5000 handles it while the SOLIX C800 runs dry. What specs don't mention: runtime drops 20-30% in cold weather (below 32°F/0°C) as battery chemistry slows down. The SOLIX S5000's extra capacity provides a critical cold-weather buffer. For occasional phone and laptop charging, both are overkill. This gap only matters for sustained, multi-appliance use.
Can I actually carry the SOLIX S5000, or is the SOLIX C800 the only portable option?
At 23.8 lbs, the SOLIX C800 is manageable for one person over short distances: parking lot to campsite, trunk to tailgate. The SOLIX S5000 at 97 lbs? You'll want a buddy, a wagon, or wheels. For reference, 97 lbs is about the weight of a bag of concrete. If your use case involves any carrying, the SOLIX C800 wins decisively.
How fast can each unit recharge from solar panels in real conditions?
On paper, the SOLIX S5000 accepts 3,000W vs the SOLIX C800's 300W of solar input. What the spec sheet won't tell you: solar panels typically deliver only 60-80% of their rated output due to panel angle, cloud cover, and temperature. In realistic conditions, expect full recharge in about 2.4 hours for the SOLIX S5000 and 3.7 hours for the SOLIX C800. That gap widens on cloudy days, when the SOLIX S5000's higher input ceiling captures more of whatever sunlight is available. One more thing: summer gives you ~7 productive solar hours per day. Winter drops to ~4. If solar is your primary recharge method, the SOLIX S5000's advantage is substantial.
"6,000 vs 3,000 cycles" — what does that actually mean for me?
In real years: the SOLIX S5000 (6,000 cycles) lasts 16.4 years at daily use, 58 years at weekend use (twice a week), or 250 years at twice-monthly camping trips. The SOLIX C800 (3,000 cycles): 8.2 years daily, 29 years weekends, or 125 years twice-monthly. What most people miss: hitting the cycle limit doesn't kill your battery. Capacity drops to about 80%. Your 5,024Wh unit becomes a ~4,019Wh unit. Still very usable. For weekend users, both batteries will outlast the warranty by years.
What if I need more capacity than the SOLIX C800's 768Wh later?
The SOLIX C800 is sealed at 768Wh, so if you expect your needs to climb, the SOLIX S5000 is the more future-proof pick: it starts at 5,024Wh and adds Anker-compatible batteries without replacing the base unit. That said, "not expandable" isn't a flaw on its own — if 768Wh comfortably covers your loads, the SOLIX C800 is a complete unit, not a downgrade.
Bottom line: should I buy the SOLIX C800 or the SOLIX S5000?
We'd buy the SOLIX S5000. The SOLIX C800 is no longer sold, so there is no price to weigh it against; the comparison on this page still helps if you own one.
Where to buy
Anker SOLIX C800
No longer sold
Anker SOLIX S5000Pick
$2,499.99
$2,499.99 · direct from Anker
Last checked 2 hours ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.