Anker · SOLIX C series · new release
Anker SOLIX C300X
288 watt-hours, nine pounds, 25 decibels: the C300X is the C300 DC with a wall socket and a ten-millisecond handover, which reviewers tested by pulling the plug on a running CPAP, and it held. An afternoon off-grid, and four wins in 14 head-to-heads. Two owners wrote in, both pleased; one ranked it first of five stations in a blackout.
288 Wh · 300 W · 9 lb · 3,000 cycles · 14 head-to-heads
1,638
Power Score · Device Hub
- 288 Wh
- capacity
- 300 W
- output
- 9 lb
- weight
- 3,000
- rated cycles
Should you buy it right now?
Fair price today: $300 is what it normally sells for. It clears 1 of 7 real-world jobs and wins 4 of 14 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
4–10
14 adjudicated matchups
Verdicts by Wenny Zheng and the Test Desk·Figures computed 2026-09-07
01 · Six real-world jobs
What the SOLIX C300X 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: starts and holds
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: starts and holds
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: starts and holds
Tailgate Party
Falls short4 hours · Game day power for the crew
670Wh needed · 274% of the tank · 425Wh short
Peak 400W: starts and holds
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: starts and holds
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 14 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
4–10
- vs EcoFlow1–3
- vs Anker1–2
- vs BLUETTI0–2
- vs Goal Zero1–1
- vs Jackery1–1
- vs DJI0–1
losesSOLIX C300X vs Anker 535 PowerHouse
5 searches reached this matchup
winsSOLIX C300X vs Anker SOLIX C300 DC
Written verdict
losesSOLIX C300X vs Anker SOLIX C800
Written verdict
losesSOLIX C300X vs BLUETTI AC50B
Written verdict
losesSOLIX C300X vs BLUETTI Elite 30 V2
Written verdict
losesSOLIX C300X vs DJI Power 500
Written verdict
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 C300X if…
Big-laptop owners: 140W USB-C the RIVER 3 230's 100W can't match.
Decided 3 matchups · read one →
The desk worker who wants a router and modem to ride through a grid flicker on the UPS.
Decided 2 matchups · read one →
The laptop-first traveler who wants a 140W USB-C port doing real fast-charging instead of a 60W trickle.
Decided 2 matchups · read one →
The buyer who wants it cheaper today and doesn't cycle it hard enough to reach the Yeti's cost-to-own crossover, plus the faster 140W USB-C and an app.
Decided 2 matchups · read one →
A rival won when…
You want the most energy per dollar and the lower cost per lifetime kilowatt-hour, and you'll actually cycle 768 watt-hours.
Decided 2 matchups · read one →
The buyer who simply wants the most capacity and output per dollar over the unit's life and doesn't mind 14.8 pounds.
Decided 2 matchups · read one →
The keep-it-simple owner who would rather not pay $31 for a Bluetooth connection they won't use.
Decided 2 matchups · read one →
The value buyer: $209 for a 300W, 245Wh box that does the same daily work as the Anker for less.
Decided 2 matchups · read one →
04 · Price history
What the SOLIX C300X 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 18 · 52 days
Carried on 100% of days tracked · dips reach $300
Built from the Sep 7, 5 AM UTC read.
$300
Usual price
100% of days tracked
$300
Best we've seen
September 7
$300
Today
at usual
$300
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 C300X: usually $300, best $300 (Sep 7), today $300 on us.ankersolix.com. Tracked twice a day since Jul 18. https://stationarena.com/products/anker-solix-c300x#price-history
Alerts for the SOLIX C300X
One email when it drops below $300, comes back in stock, or a newer model in this line appears. Nothing else.
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05 · Voices
What 2 owner reports say about the SOLIX C300X
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.
- 100%
- positive
- 2
- self-declared owners
- 0
- measured reports
- 2
- videos
- 56%
- Anker norm
- 2026–2026
- reporting period
1 for, 0 against
tenure rarely stated
numbers, not impressions
1 channel
across 687 reports
2026-01-24 to 2026-02-10
Weighted read
100% positive weighted · corpus 51% · above 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, support0 against · 0 for
- How it performs0 against · 1 for
- How it feels to use0 against · 0 for
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.
- Capacity & runtime100% positive · brand 84%1
left: negative · right: positive
What owners praise
Capacity & runtimeowner
Clear winner of his five stations in a blackout, running monitors, dock and three internet systems.
The Solar Lab· 1 likessource
What owners complain about
- Nothing on this side yet.
Reviewer consensus
6/12 positive excerpts, 3 sources
Independent hands-on reviewers found the C300X near-silent at its rated 300W load, though one test noted the fan becoming noticeably audible under a heavier transient/overload draw.
teqclub.com · thesolarlab.com · backuppowerhub.com · researched 2026-07-17
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 535 PowerHouse unless portability or the modern feature set is the whole point.”
“Buy the C300X unless you already know your whole kit charges over USB-C or 12V.”
“Buy the C800 unless you're certain your loads stay small.”
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)
- Surge Peak600W
- AC Outlets3
- USB-C Ports3
- USB-A Ports1
- USB-C Charging Outputs140W
Charging
100
Solar Input (W)
- Solar Input TypeXT-60 (11-28V)
Living with it
9
Weight (lbs)
- Noise Level (db)25
- UPSYes (10ms)
- App ControlYes
- Warranty (Years)5
Compare it with
SOLIX C300X vs
leads on 2 · trails on 4
| Spec | SOLIX C300X | 535 PowerHouse | Gap |
|---|---|---|---|
| Usual price | $300 | $300 | $0 |
| Capacity (Wh) | 288 | 512 ● | -224 |
| Output (W) | 300 | 500 ● | -200 |
| Surge (W) | 600W | N/A | |
| Rated cycles | 3000 | 3000 | 0 |
| Solar input (W) | 100 | 120 ● | -20 |
| Weight (lb) | 9 ● | 16.7 | -7.7 |
| Noise (dB) | 25 | N/A | |
| AC outlets | 3 | 4 ● | -1 |
| USB-C ports | 3 ● | 1 | +2 |
| Warranty (yr) | 5 | 5 | 0 |
| Chemistry | LiFePO4 | LiFePO4 | |
| UPS | Yes (10ms) | 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.
$1.04
per Wh
at $300
$0.35
per lifetime kWh
864 kWh over 3,000 cycles
8.2 yr
if cycled daily
29 yr at weekends only
5 yr
warranty
$60 per covered year
09 · From the matchups
Questions people ask
Is the Anker 535 or the SOLIX C300X better for camping?
For a full weekend, neither — both fall well short of a typical 2,100Wh weekend draw, and you'd want a larger station. For a single afternoon or an overnight with light loads, the 535's 512Wh gives you the longer runway, while the C300X's 9-lb weight wins if you're hiking it in. Match the unit to the length of the trip, not the brand.
Can the Anker SOLIX C300X run a CPAP all night?
Not off battery alone — a typical 320Wh night exceeds its 245Wh of usable energy, leaving it about 75Wh short before morning. It can bridge a grid flicker for a wall-powered CPAP through its UPS mode [B7], but as the overnight source, the 512Wh 535 PowerHouse is the one that finishes the night with charge to spare.
Is the Bluetti Elite 30 V2 better than the Anker SOLIX C300X?
For most buyers, yes. The two share the identical 288Wh battery, 3,000-cycle lifespan, and five-year warranty, but the Bluetti outputs 600W to the Anker's 300, surges higher, takes more solar, and costs ninety dollars less. The Anker only pulls ahead on its 140W USB-C port, slightly lighter weight, and quieter fan.
Is the DJI Power 500 worth $79 more than the Anker SOLIX C300X?
For most people, yes. The extra money buys nearly double the capacity (512Wh vs 288Wh), more than three times the continuous output (1,000W vs 300W), and a lower cost per kilowatt-hour over the battery's life ($0.19 vs $0.35). The one strong reason to keep the $79 is if you specifically want the lighter unit — 9 pounds against 16.1.
Is the Anker SOLIX C300X worth $40 more than the Jackery Explorer 300?
For almost anyone keeping it past a year, yes. The Anker's cells last 3,000 charge cycles to the Jackery's 500, so it delivers roughly six times the lifetime energy and works out far cheaper per kilowatt-hour despite the higher sticker. You would only prefer the Jackery if you want the lightest possible unit or plan to replace it quickly.
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.