Anker · SOLIX C series
Anker SOLIX C300 DC
The SOLIX C300 DC has no inverter: anything with a USB cable, nothing with a plug. 288 watt-hours, six pounds, 140 watts of USB-C. It finishes an afternoon off-grid and loses 16 of 20 head-to-heads to units that carry a socket. Owners run below the norm, though one ran a BiPAP five hours on under half the tank.
288 Wh · 300 W · 6.17 lb · 3,000 cycles · 20 head-to-heads
1,610
Power Score · Device Hub
- 288 Wh
- capacity
- 300 W
- output
- 6.17 lb
- weight
- 3,000
- rated cycles
Should you buy it right now?
Fair price today: $200 is what it normally sells for. It clears 1 of 7 real-world jobs and wins 4 of 20 matchups.
Real-world jobs
1 of 7
Falls short on Weekend Camping, 8-Hour Blackout, CPAP Overnight, Remote Workday, Tailgate Party and Van Life Daily
Head-to-head record
4–12–4
20 adjudicated matchups
Verdicts by Wenny Zheng and the Test Desk·Figures computed 2026-09-07
01 · Six real-world jobs
What the SOLIX C300 DC actually runs
The load profiles every comparison on the site is scored on, computed for this unit alone: energy needed against the usable tank after inverter losses, and whether the inverter holds and starts the biggest single load.
Weekend Camping
Falls short2 nights · Two nights off-grid with essential comfort
2,100Wh needed · 858% of the tank · 1,855Wh short
Peak 75W: cannot start
8-Hour Blackout
Falls short8 hours · Keep the essentials running through a night without power
1,645Wh needed · 672% of the tank · 1,400Wh short
Peak 150W: cannot start
CPAP Overnight
Falls short8 hours · Sleep therapy without interruption — the #1 medical use case
320Wh needed · 131% of the tank · 75Wh short
Peak 40W: starts and holds
Remote Workday
Falls short8 hours · Full work day off-grid without power anxiety
910Wh needed · 372% of the tank · 665Wh short
Peak 60W: cannot start
Tailgate Party
Falls short4 hours · Game day power for the crew
670Wh needed · 274% of the tank · 425Wh short
Peak 400W: cannot start
Van Life Daily
Falls short24 hours · A full day of mobile living — the ultimate endurance test
4,685Wh needed · 1914% of the tank · 4,440Wh short
Peak 150W: cannot start
Afternoon Off-Grid
Clears itan afternoon · Phones and a speaker at the park, beach, or campsite — the small-unit job description
100Wh needed · 41% of the tank · 145Wh spare
Peak 30W: starts and holds
02 · Head-to-head record
4 wins in 20 written matchups
Every matchup is a full verdict scored on the six jobs above plus price, longevity and portability. This is the set shoppers search for, not a random sample.
Win share
4–12–4
- vs BLUETTI0–3–3
- vs EcoFlow1–4
- vs Anker1–2
- vs Jackery1–2
- vs Goal Zero1–0–1
- vs DJI0–1
winsSOLIX C300 DC vs Anker SOLIX C200 DC
89 searches reached this matchup
losesSOLIX C300 DC vs DJI Power 2000
72 searches reached this matchup
losesSOLIX C300 DC vs BLUETTI Apex 300 + 2×B500K
45 searches reached this matchup
losesSOLIX C300 DC vs BLUETTI Elite 400
27 searches reached this matchup
losesSOLIX C300 DC vs Jackery HomePower 3000
13 searches reached this matchup
losesSOLIX C300 DC vs EcoFlow RIVER 2
12 searches reached this matchup
03 · From the verdicts
Who it is for, and when a rival won instead
Each line is lifted from a written matchup where it decided the verdict, and links to the page it came from. Repeated across many matchups means it is the unit’s signature, not one author’s opinion.
Buy the SOLIX C300 DC if…
You want the better lifetime-value pick outright: 0.23 dollars per kWh against the RIVER 2's 0.25, on more total energy delivered over the unit's rated life.
Decided 3 matchups · read one →
The traveler whose 'power station' is really a device fleet — phone, laptop, camera, maybe a drone — who wants something that disappears into a daypack at 6.2 pounds.
Decided 3 matchups · read one →
Anyone who wants a fast turnaround between trips, the two-way USB-C tops the pack back to about 80% in an hour [B2].
Decided 3 matchups · read one →
You carry it on your back. 6.17 lbs against 7.8 is a difference you notice on a trail, and it buys the capacity edge rather than costing it.
Decided 2 matchups · read one →
A rival won when…
You want a published noise figure before you sleep beside it. 30 dB, on the spec sheet, from the manufacturer.
Decided 4 matchups · read one →
Anyone who wants to plug in a wall device, a lamp, a TV, a CPAP with its stock AC brick, a small blender at a tailgate, and doesn't want to discover mid-trip that the cheaper unit can't.
Decided 2 matchups · read one →
Anyone whose load list has a wall plug on it — a tailgate blender, a router-and-modem through a blackout, an AC appliance of any kind — because this is the only one of the two that can run it.
Decided 2 matchups · read one →
Buyers who want one unit that covers both AC and USB loads without thinking about it, even at a higher price and shorter cycle life.
Decided 2 matchups · read one →
04 · Price history
What the SOLIX C300 DC actually sells for
The number on the buy button, read twice a day, one point per day. Never the sticker, never a “was” price.
Read from us.ankersolix.com twice a day since July 17 · 53 days
Carried on 100% of days tracked · dips reach $200
Built from the Sep 7, 5 AM UTC read.
$200
Usual price
100% of days tracked
$200
Best we've seen
September 7
$200
Today
at usual
$200
Highest seen
0 days above usual
How to read this
- Usual is the price the unit carried most of the time, tested for how long it held rather than how often we looked. A weekend promotion cannot move it.
- Best is the lowest price we have read on the store itself. Typed coupon codes, member-only prices and marketplace listings are not counted; anything applied automatically at checkout is.
- A gap in the line is a day we could not read a price. We never draw across one, and we never show the store’s own “was” price.
Method on the methodology page.
Share the numbers
Anker SOLIX C300 DC: usually $200, best $200 (Sep 7), today $200 on us.ankersolix.com. Tracked twice a day since Jul 17. https://stationarena.com/products/anker-solix-c300-dc#price-history
Alerts for the SOLIX C300 DC
One email when it drops below $200, comes back in stock, or a newer model in this line appears. Nothing else.
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05 · Voices
What 12 owner reports say about the SOLIX C300 DC
Owner reports are paraphrased from public YouTube comments and each links to its source; reviewer consensus is counted from cited excerpts, never quoted; our own verdicts are quoted. Specs on this page never come from any of them.
- 42%
- positive
- 10
- self-declared owners
- 5
- measured reports
- 7
- videos
- 56%
- Anker norm
- 2024–2026
- reporting period
5 for, 7 against
tenure rarely stated
numbers, not impressions
4 channels
across 687 reports
2024-11-16 to 2026-07-26
Weighted read
45% positive weighted · corpus 51% · below the norm
Raw counts reward whoever writes most, and people write when something breaks. Here each report is weighted by what the complaint costs a buyer (a failure outranks an app gripe) and by its evidence (a measured owner report outranks a shopper’s opinion), then compared with every report in the corpus.
- Failures, returns, support1 against · 0 for
- How it performs6 against · 3 for
- How it feels to use0 against · 2 for
The complaints that matter
- Calls the C300 DC warranty questionable at only one year. source ↗
By topic, against the Anker norm
Bars count this unit’s reports; the tick is the share of positive reports for the same topic across every Anker unit in the corpus.
- Solar input3 measured0% positive · brand 37%4
- Capacity & runtime1 measured100% positive · brand 84%2
- Charging speed1 measured50% positive · brand 48%11
- General100% positive · brand 61%1
- Weight & portability100% positive · brand 68%1
- Support & warranty0% positive · brand 63%1
- Build quality0% positive · brand 67%1
left: negative · right: positive
When the reports were made
What owners compare it against
What owners praise
Capacity & runtimemeasuredowner
BiPAP with heated hose and humidifier at 80% used 47% of the 288Wh pack over 5 hours of sleep.
Footprint Hero with Alex Beale· 5 likessource
Charging speedmeasuredowner
Can be charged over USB-C at up to 140W, which he thinks is fantastic.
ReeWray Outdoorssource
Generalowner
His favorite unit: small, transportable, very efficient on 12V and charges well off solar.
Minute Man Solarsource
What owners complain about
Solar inputmeasuredowner
28V input ceiling blocks a 25.6V LiFePO4 bank, which can reach 29.2V fully charged.
Footprint Hero with Alex Beale· 4 likessource
Build qualityowner
DC5521 plugs with poor tolerances have heated up at 5A; wishes it used XT60 throughout.
Jasonoid - Solar Power, Batteries, and More!source
Charging speedcommenter
Says the C300 DC has no pass-through charging and just cycles between 98% and 100%.
Footprint Hero with Alex Beale· 7 likessource
Reviewer consensus
3/4 positive excerpts, 5 sources
Light DC-only design (no AC inverter), fast USB-C charging, and good port selection for device charging are the highlights.
the-gadgeteer.com · forbes.com · androidpolice.com · batteryessence.com · campingsolar.us · researched 2026-07-10
Anker, brand-wide
56% positive across 687 reports. The brand-wide complaint is durability & failures (65% negative); the brand-wide praise is capacity & runtime (84% positive).
From the test desk
“Buy the SOLIX C300 DC if the extra $60 is easy money: it actually runs four cents cheaper per watt-hour than the C200 DC ($0.69 vs $0.73) and a cent cheaper per lifetime kilowatt-hour ($0.23 vs $0.24), so the 50% bigger…”
“If your job is running anything with a cord for hours — a CPAP overnight, a fridge through a blackout, a laptop and monitor through a remote workday off-grid — the Power 2000 is the only one of these two that can do it,…”
“Every computed metric agrees: the Apex 300 stack wins all six real-world scenarios tested, costs less per lifetime kWh ($0.11 versus $0.23) despite a sticker price about 25 times higher, and posts a PowerScore of 10,174…”
06 · Where each number comes from
Spec sheet, in four cards
Every field carries its source: green is the manufacturer’s own document, blue was adjudicated after sources disagreed, grey is the catalogue as imported. Then compare it line by line with the units people actually weigh it against.
Battery
288
Capacity (Wh)
- ChemistryLiFePO4
- Charging Cycles3000
- Battery Expansion FeasibilityNo
Power out
300
Output (W)
- AC Outlets0
- USB-C Ports4
- USB-A Ports2
- USB-C Charging Outputs140W, 140W, 100W, 15W
Charging
100
Solar Input (W)
- Solar Input TypeXT-60
Living with it
6.17
Weight (lbs)
- UPSNo
- App ControlYes
- Warranty (Years)3
Compare it with
SOLIX C300 DC vs
leads on 3 · trails on 2
| Spec | SOLIX C300 DC | SOLIX C200 DC | Gap |
|---|---|---|---|
| Usual price | $200 | $140 ● | +$60 |
| Capacity (Wh) | 288 ● | 192 | +96 |
| Output (W) | 300 ● | 200 | +100 |
| Surge (W) | N/A | N/A | |
| Rated cycles | 3000 | 3000 | 0 |
| Solar input (W) | 100 | 100 | 0 |
| Weight (lb) | 6.17 | 4.2 ● | +2 |
| Noise (dB) | N/A | N/A | |
| AC outlets | 0 | 0 | 0 |
| USB-C ports | 4 ● | 2 | +2 |
| Warranty (yr) | 3 | 3 | 0 |
| Chemistry | LiFePO4 | LiFePO4 | |
| UPS | No | No |
● marks the better figure where direction is clear. Price is each unit’s usual price.
Read the full verdict →07 · Anker SOLIX C line
Where it sits in the line
Capacity bars are to scale across the line; prices are each unit’s usual price, not today’s.
08 · At its usual price
Cost of ownership
Cycle life is the manufacturer’s rating to 80% capacity; the lifetime figure is that rating times the nameplate capacity.
$0.69
per Wh
at $200
$0.23
per lifetime kWh
864 kWh over 3,000 cycles
8.2 yr
if cycled daily
29 yr at weekends only
3 yr
warranty
$67 per covered year
09 · From the matchups
Questions people ask
Is the Anker SOLIX C300 DC worth $60 more than the C200 DC?
If the extra $60 doesn't strain your budget, yes: the C300 DC gives you 288Wh instead of 192Wh and actually costs a cent less per lifetime kilowatt-hour ($0.23 vs $0.24), so you're not paying a premium for the extra capacity. If $139.99 is your ceiling, or you only ever need to top up a phone and a tablet, the C200 DC covers that without the extra $60 or the extra two pounds.
What's the difference between the SOLIX C300 DC and the regular SOLIX C300?
The SOLIX C300 DC in this comparison is the DC-only variant: no AC inverter, 6.17 lbs, charging only over USB-C, USB-A, and DC. The standard SOLIX C300, without 'DC' in the name, is a different, AC-equipped unit not covered in this comparison. Anker's naming across the C200, C200 DC, C300, C300 DC, and C300X is easy to mix up, so double-check the listing says 'DC' if this is the comparison you actually want.
Can the Anker SOLIX C300 DC run a fridge or a CPAP machine?
No. It has no AC inverter, just 300W of DC and USB output from a 288Wh battery. A CPAP Overnight alone needs 320Wh, already more than the C300 DC's entire rated capacity, and an 8-Hour Blackout needs 1,645Wh. It's built for charging phones, laptops, and small DC gear, not running anything with a plug.
Is the DJI Power 2000 worth paying so much more than the SOLIX C300 DC?
Only if you need what the extra money buys: a 3,000W AC inverter, 2,048Wh of capacity, and an automatic 10-millisecond switchover to backup power. For pure USB-C device charging, both units cap out at the identical 140W, so the price gap buys nothing extra in that one specific use case.
Which one is quieter, the SOLIX C300 DC or the Power 2000?
DJI publishes a noise rating for the Power 2000, about 30dB, while Anker hasn't published one for the C300 DC at all. That's worth knowing on its own if fan noise matters to your setup, independent of which unit is objectively quieter.
Some links are affiliate links; they never change the price you pay or which price we show. Owner reports are paraphrased from public comments and link to their source.