Head-to-head test
Anker SOLIX C300 vs Anker SOLIX C300 DC
The SOLIX C300 DC is the same 288Wh cell, the same 3,000-cycle rating, and the same dual 140W USB-C ports as the standard C300 — for $70 less, it just deletes the part that lets you plug anything into a wall.
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
Anker
SOLIX C300
1,664Power Score · Device Hub
$299.99 list · direct from Anker
Anker
SOLIX C300 DC
1,621Power Score · Device Hub
$199.99 list · direct from Anker
Spec deltas
The Anker SOLIX C300 and its DC sibling share the exact same battery: 288Wh, 3,000 LiFePO4 cycles, dual 140W USB-C ports, a 100W solar ceiling. The one line where the spec sheets genuinely part ways is AC outlets — the standard C300 lists one inverter behind 600W of surge headroom, and the C300 DC lists zero.
That's what the $70 buys: $239.99 for the C300 against $169.99 for the DC. It also carries the entire 10ms UPS switchover and two of the five warranty years. Run the engine's own lifetime math anyway and the DC still wins on cost per kWh — 0.20 dollars against 0.28 — because deleting a part that never breaks is a legitimate way to make a unit cheaper to own, not just cheaper to buy.
So this isn't a power fight. Both units are the identical 288Wh tank. It's a socket fight, and only one of these two boxes has a socket.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
It's paying for the one line item that's different in kind, not degree: the C300's AC inverter, rated for 600W of surge and a 10ms UPS switchover, against the DC's spec sheet showing zero AC outlets and no switchover at all.
Both units hold 288Wh on the same 3,000-cycle cell and the same dual 140W USB-C portsThe C300 costs $239.99 and the C300 DC costs $169.99 — a $70 gap
Why it mattersBuyers comparing these two on price-per-watt-hour are comparing the wrong thing — the $70 buys a component, not more energy.
A 10ms switchover only matters on a unit with something to switch over to. Strip the inverter and the UPS spec disappears with it, which is exactly what happened here.
Anker's own listing shows zero AC outlets and marks surge peak not applicable on the C300 DCThe standard C300's 10ms UPS switchover is called legitimately unique in its size and price class by reviewersA3
Why it mattersAnyone shopping this pair specifically for router or modem backup should skip the price comparison and go straight to the C300 — the DC was never entered in that race.
Every difference between these two units runs back to a single removed part: the DC is lighter, cheaper, and worse at backup duty for the identical reason, not three unrelated ones.
The C300 weighs 9.1 lbs and the C300 DC weighs 6.17 lbsOwners describe the DC as kept very light specifically because it ditches the AC inverterB1
Why it mattersBuyers who only charge phones and laptops from this thing shouldn't weigh the price gap and the weight gap as separate decisions — it's the same $70, the same missing inverter, counted twice.
The DC wins the engine's own value math cleanly, and it isn't a trick — just arithmetic on a part it never had to buy. That math tells the truth for buyers who were never going to use an AC outlet in the first place.
The engine prices the C300 DC at 0.20 dollars per lifetime kWh against the C300's 0.28Both units deliver an identical 864 total lifetime kWh, from the identical cell and cycle rating
Why it mattersIf every device you own is USB-C or 12V, the DC is the better buy by the numbers this site trusts most. If there's a lamp or a router in the picture, that math stops being relevant to you.
The specific dimensions that decide these two units — everything else is a tie.
What the Specs Don't Tell You
Selected because: The UPS card is the one the engine flags as a real advantage, not a footnote, and it's the crux of this whole matchup.
The one gotcha the engine flags as an outright advantage, not just an information note, is UPS protection — and it fires only for the standard C300. Its 10ms switchover is real hardware behind a real inverter; the DC's field is blank because the inverter it would switch isn't in the box.
The DC's noise rating is also undisclosed, which reads differently once you know why: a unit with no AC inverter has no inverter fan spinning up under a sustained load, so there may simply be less to publish. The warranty gap looks small on paper — five years against three — but priced per year of coverage it's $48 for the C300 against $57 for the DC, so the pricier unit is also the better warranty deal per year, not just the more capable one.
Lifetime Value
Selected because: Identical battery means the cost-per-kWh gap is pure price arithmetic, and it favors the unit that loses the gotcha section.
cost / lifetime kWh
Both units deliver the same 864 lifetime kWh over their 3,000-cycle life, because the cell is identical. That makes the cost-per-kWh comparison unusually clean: 0.20 dollars for the DC against 0.28 for the C300, with the entire gap explained by the $70 price spread and nothing else.
It's the DC's cleanest win on the page, and it should stay that way in your head only if the AC outlet was never going to get used. Cost per kWh measures dollars against energy delivered — it has no way to price in a wall plug you don't have.
Portability & Form Factor
Selected because: The 2.93 lb weight gap traces to the exact same removed part as the price gap — worth spelling out once.
weight
Neither weight is a strain — 9.1 lbs and 6.17 lbs both live comfortably in one hand, so this isn't a two-person-lift conversation at either number. What the 2.93 lb gap actually measures is a component, not a design choice about portability for its own sake.
Owners of the DC credit that exact removal for the low weightB1, which means the lighter unit isn't lighter because Anker trimmed material — it's lighter because it shipped without the part the C300 charges $70 for.
Your Life, Your Pick
Selected because: Identical capacity means identical scenario performance across the board — a genuine dead heat worth calling out plainly.
Run both units through every one of the site's real-world scenarios and the percentages match to the digit — 858% of a weekend camping trip's total need, 131% of a CPAP night, 100% of a tailgate's load, all the way down the list. Same battery, same runway; the outlet question never shows up in the runtime math at all.
The engine still rates neither unit able to fully cover any of these jobs at 300W continuous output, and that verdict is identical for both for the same reason the percentages are: there's no second battery hiding in the C300 that the DC doesn't have. The socket argument only shows up once you actually need the socket.
Strengths & trade-offs
Anker SOLIX C300
Strengths
- +Longer warranty
Trade-offs
- –Substantially more expensive (+$100) than the SOLIX C300 DC.
Anker SOLIX C300 DC
Strengths
- +Costs $100 less
- +Lighter by 2.9 lb
Trade-offs
- –No major technical downsides compared to rival.
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
Neither unit
Neither unit can fully handle this scenario (needs 2,100Wh). You'd need a higher-capacity station or to cut back on usage.
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
Neither unit
Neither unit can fully handle this scenario (needs 1,645Wh). You'd need a higher-capacity station or to cut back on usage.
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
Neither unit
Neither unit can fully handle this scenario (needs 320Wh). You'd need a higher-capacity station or to cut back on usage.
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
Neither unit
Neither unit can fully handle this scenario (needs 910Wh). You'd need a higher-capacity station or to cut back on usage.
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
Neither unit
Both units land at exactly 100% of a tailgate's load — same battery, same result. This is the one scenario in the set where either could plausibly cover the job, and it's also the one most likely to involve something that only plugs into a wall, which brings the AC question right back into the room.
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 can fully handle this scenario (needs 4,685Wh). You'd need a higher-capacity station or to cut back on usage.
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 six 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
Dead heat — both run this 205W load for roughly 1.2h. Pick on price, weight, or ports.
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 0–16.3hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–3.3hHigh-Draw Appliances
These reveal the real limits¹ 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 15, 2026
Verdict: the Anker SOLIX C300
The $70 that separates these two units buys one thing: the C300's AC inverter, with 600W of surge headroom and a 10ms UPS switchover, plus two extra years of warranty. The C300 DC's spec sheet lists zero AC outlets, not a weaker inverter — there isn't one. If a wall plug is ever part of the job, that settles it and the C300 is the buy. But the engine's own lifetime math sides with the DC on cost per kWh (0.20 dollars against 0.28), and for anyone charging only USB-C and 12V gear, that math is telling the truth — buy the DC, keep the $70, and carry 2.93 fewer pounds.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 15, 2026. The links below open Anker's current price.
$299.99 list · direct from Anker
or check the SOLIX C300 DC price$199.99 list
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated July 15, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, CPAP, Tailgating.
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 — see Sources & Research Notes below.
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 C300 rates 4.4/5 (67th percentile of 22 Personal-class units), and SOLIX C300 DC rates 4.2/5 (52nd percentile of 22 Personal-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.
The C300's UPS Spec Is the Whole Story
600W of surge and a 10ms switchover live only on the standard C300 — the DC's fields for both are blank because there's no inverter behind them. If a router or anything that can't tolerate a slow transfer is the job, this is the one card that decides it.
Same Cell, Different Coverage: 5 Years vs 3
Both units carry the identical 288Wh cell, but the C300's warranty runs two years longer. Priced per warranty-year, the C300 works out to cheaper coverage too — $48 a year against the DC's $57 — so the shorter warranty isn't fully offset by the lower sticker price.
No Noise Rating on the DC — and a Likely Reason Why
The DC ships without a published dB figure. Its sibling's rating covers a unit running a fan under an active inverter load; strip the inverter and there may simply be less for a fan to cool, which would explain the missing spec rather than hide anything troubling.
Full record above — the Test Desk pick is the SOLIX C300.
Check SOLIX C300 price →or check the SOLIX C300 DC priceOwnership 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 C300 DC wins on both sticker price and long-term value. At $0.23/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Growth path
SOLIX C300
FIXED CAPACITYFixed at 288Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 100W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
SOLIX C300 DC
FIXED CAPACITYFixed at 288Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 100W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Neither expands, and that's no knock on either — each is a complete unit at a fixed size. Buy the capacity that covers your needs now (the SOLIX C300 gives you the larger ceiling); you can't add to either later.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
Anker SOLIX C300
Coverage of the standard C300 leads with the spec sheet: 288Wh capacity, 300W continuous output (600W with SurgePad), and dual 140W USB-C ports built for fast device chargingA1. Anker markets it as roughly 30% smaller than competing power stations, and reviewers echo that, calling it impressively light and compact for hikes and camping tripsA2.
The detail that keeps coming up is the 10ms UPS switchover — reviewers call it legitimately unique at this size and price classA3, which lines up with Anker positioning the unit toward buyers who want reliability and smart features in a compact footprintA4.
“288Wh capacity with 300W output (600W with SurgePad) and dual 140W USB-C ports for fast device charging.”
Sources
ankersolix.com · trustedreviews.com · im.com.au · solarwaypoint.com · backuppowerhub.com · powerstationlab.com
Anker SOLIX C300 DC
Coverage of the DC leads with the tradeoff that defines it against its own sibling: it ditches the AC inverter entirely to stay light, landing around 6.2 lbsB1. What's left is 2 USB-A ports, 4 USB-C ports, and a 12V car socket, with two-way USB-C PD 3.1 charging the unit itself to 80% in roughly an hourB2.
Owners report that's enough to charge a phone and laptop several times over, run a fan for hours, or power a small light setupB3. Reviewers frame it plainly as a DC-focused unit built for modern travelers charging devices, not for running AC appliancesB4 — which tracks with a spec sheet that lists zero AC outlets.
“A 288Wh unit that ditches the heavy AC inverter to focus on DC power, keeping it very light at about 6.2 lbs.”
Sources
the-gadgeteer.com · forbes.com · androidpolice.com · batteryessence.com · bestbuy.com · campingsolar.us
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Compact, light design; dual 140W USB-C fast charging; and a standout 10ms UPS rare at this size are the highlights. [SOLIX C300 · 3 entries]
- Light DC-only design (no AC inverter), fast USB-C charging, and good port selection for device charging are the highlights. [SOLIX C300 DC · 3 entries]
- A1
“288Wh capacity with 300W output (600W with SurgePad) and dual 140W USB-C ports for fast device charging.”
ankersolix.com / trustedreviews.com — SOLIX C300 review · 2026 · [positive]
- A2
“Anker claims the C300 is 30% smaller than competing power stations; reviewers call it impressively light and compact for the capacity, aimed at keeping phones and gadgets charged on hikes and camping trips.”
im.com.au / solarwaypoint.com — SOLIX C300 review · 2026 · [positive]
- A3
“Its 10ms UPS switchover is legitimately unique in this size and price class.”
backuppowerhub.com / powerstationlab.com — SOLIX C300 review · 2026 · [positive]
- A4
“Targets users who value reliability, smart features, and compact design.”
backuppowerhub.com — SOLIX C300 review · 2026 · [positive]
- B1
“A 288Wh unit that ditches the heavy AC inverter to focus on DC power, keeping it very light at about 6.2 lbs.”
the-gadgeteer.com / forbes.com — SOLIX C300 DC review · 2026 · [positive]
- B2
“Offers 2 USB-A and 4 USB-C ports plus a 12V car socket; two-way USB-C with PD 3.1 recharges the unit to 80% in about 1 hour.”
androidpolice.com / batteryessence.com — SOLIX C300 DC review · 2026 · [positive]
- B3
“Owners praise its portability and capacity — enough to charge a phone and laptop several times, run a fan for hours, or power a small light setup.”
bestbuy.com owner reviews — SOLIX C300 DC / C300X · 2026 · [positive]
- B4
“A DC-focused design with app integration and solar support — best for modern travelers charging devices, not running AC appliances.”
androidpolice.com / campingsolar.us — SOLIX C300 DC review · 2026 · [mixed]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the SOLIX C300 if you…
- →You want to run anything with a wall plug at all — a lamp, a router, a fan that isn't USB-powered — because the DC's AC outlet count is zero, not just low.
- →You want a documented 10ms UPS switchover behind something that can't tolerate a slow transfer; the DC's field for this spec is blank because it has no inverter to switch over from.
Buy the SOLIX C300 DC if you…
- →Every device you own charges over USB-C, USB-A, or 12V and you'll never plug in anything else — the DC saves $70, weighs 2.93 lbs less, and wins the engine's own cost-per-kWh math outright.
- →You're optimizing dollars and grams for a device-charging trip, not backup duty. The DC's 59 cents per Wh against the C300's 83 cents is a real gap for a use case that never touches AC.
If neither fits
If the real job is a weekend camping trip or a multi-appliance blackout, both of these fail it the same way — 288Wh at 300W continuous output doesn't cover either scenario, full stop, regardless of which one has a socket. Look at something in the 1,000Wh-plus class from either brand instead.
The Bottom Line
Same 288Wh cell, same 3,000 cycles, same 140W USB-C ports — the entire decision comes down to one line on the spec sheet. The C300 lists an AC inverter with 600W of surge and a 10ms UPS switchover; the C300 DC lists neither, because it doesn't have one.
If a wall outlet is ever part of the job, the $70 isn't optional — buy the C300. If every device you own already charges over USB-C or 12V, keep the $70, save the 2.93 lbs, and take the DC. The engine's own cost-per-kWh math backs that second call too.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
What's actually different between the SOLIX C300 and the SOLIX C300 DC?
The battery, cycle life, and USB-C charging speed are identical — 288Wh, 3,000 cycles, dual 140W ports on both. The real difference is the C300's AC inverter: 600W of surge capacity and a 10ms UPS switchover the DC doesn't have, because Anker's own spec sheet lists zero AC outlets on the DC.
Is the SOLIX C300 DC missing an AC outlet entirely?
Yes. It's not a smaller or weaker inverter — there isn't one. Every port on the DC is USB-A, USB-C, or a 12V car socket, and it stays about 2.93 lbs lighter and $70 cheaper as a direct result.
Which one is the better value per watt-hour?
By the engine's own lifetime cost-per-kWh math, the DC wins outright — 0.20 dollars against 0.28 — because it delivers the same 864 lifetime kWh from a $70-cheaper box. That math only tells the full story if you were never going to use an AC outlet in the first place.
Does the shorter 3-year warranty on the C300 DC matter?
It's two years shorter than the C300's five, and works out to $57 per warranty-year against the C300's $48 — so the pricier unit is also the better per-year warranty deal, not just the more capable one.
Which one should I buy for outage backup?
Neither covers a real multi-day outage at 288Wh, but if backup means keeping a router or a lamp alive through a shorter one, that requires an AC outlet — which only the standard C300 has. The DC was built for charging devices, not powering them through a wall plug.
Where to buy
Anker SOLIX C300Pick
$299.99
$299.99 list · direct from Anker
Anker SOLIX C300 DC
$199.99
$199.99 list · direct from Anker
Prices may vary by retailer and are subject to change.