Head-to-head test
Anker SOLIX C300X vs Goal Zero Yeti 300
The Yeti holds nine more watt-hours than the C300X and weighs four and a half more pounds to do it — so this is portability and price up front against solar input and cost-to-own over the long haul.
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
Anker
SOLIX C300X
1,638Power Score · Device Hub
$299.99 · direct from Anker
Last checked 6 days ago. Prices move — check before you buy.
Goal Zero
Yeti 300
1,473Power Score · Device Hub
$349.95 · direct from Goal Zero
Last checked 6 days ago. Prices move — check before you buy.
Spec deltas
The C300X is $50 cheaper than the Yeti 300 and 4.7 pounds lighter, and it gives up just nine watt-hours of capacity to do it, 288Wh to 297. On the two things you feel first, what you pay and what you carry, the Anker is ahead before the Yeti says a word.
The Yeti answers on the long game. It takes 200W of solar input to the Anker's 100W, so it refills from the sun in roughly half the time, and its 4,000-cycle battery outlasts the Anker's 3,000, which makes it the cheaper unit to own at $0.29 per lifetime kilowatt-hour against $0.35 even though it costs more today. It's also IP54 sealed against dust and rain, a genuinely rugged box.
So the split is clean, and it's about where the unit lives. Carry it, use it at a desk, or run a CPAP beside it, and the lighter, quieter, cheaper-up-front C300X is the better everyday pick. Recharge it off panels in the backcountry and keep it for a decade outdoors, and the Yeti's solar speed, longevity, and weather sealing are worth the extra $50 and the extra weight.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
weight
Nine watt-hours is a phone charge or two, not a reason to haul 13.7 pounds instead of 9, so the Yeti's size premium has to be justified by something other than capacity, because on capacity there's effectively nothing there.
Yeti 300 holds 297Wh and weighs 13.7 poundsC300X holds 288Wh and weighs 9 poundsthe capacity difference is 9 watt-hours
Why it mattersAnyone choosing on capacity-per-pound should stop weighing the two as close, they aren't, and the Anker is far easier to carry for the same energy.
cost / lifetime kWh
The Yeti delivers about 1,188 kWh across its life to the Anker's 864, so despite the $50 higher sticker it costs less per unit of energy you'll actually pull from it, which is the rare case where paying more today saves money over a decade.
Yeti costs $349.95 to the C300X's $299.99Yeti is rated for 4,000 cycles to the C300X's 3,000 and holds 297WhYeti lands at $0.29 per lifetime kilowatt-hour, the C300X at $0.35
Why it mattersA keep-it-forever buyer who cycles the unit hard should weigh the Yeti's lower cost-to-own, not just its higher price tag.
solar input
For a unit you refill from panels rather than a wall, double the solar input is roughly half the recharge time, and on a short winter solar day that's the difference between topping off by noon and chasing sun all afternoon.
Yeti accepts 200W of solar input, the C300X 100Wa C300X reviewer explicitly wished it took 200WA6both are small units people take off-grid
Why it mattersSolar-first and off-grid buyers should give real weight to the Yeti's 200W input, the one place its extra size buys a decisive advantage.
The specific dimensions that decide these two units — everything else is a tie.
Portability & Form Factor
Selected because: 4.7 pounds is the widest weight gap in the batch and the C300X's clearest everyday win.
weight
This is where the C300X wins the day. It's 9 pounds to the Yeti's 13.7, a 4.7-pound gap, and it delivers that lighter carry while giving up only nine watt-hours of capacity. The Yeti is genuinely heavy for what it stores, and the reason is its ruggedness, the IP54 sealing and the reinforced build, which is armor you're grateful for outdoors and dead weight everywhere else.
Put the two in a hand and the math gets vivid: the Yeti asks for four and a half more pounds and returns two phone charges' worth of extra energy. For anything that moves with you, a campsite, a tailgate, a trunk, the Anker is the one your arm forgets it's holding.
Lifetime Value
Selected because: cheaperToOwn is p2 despite the higher sticker — the honest counterweight to the verdict.
cost / lifetime kWh
Here's the part of the case that runs against the C300X, stated plainly. The Yeti costs more today, $349.95 to $299.99, but it's the cheaper unit to own: its 4,000-cycle battery and 297Wh deliver about 1,188 kWh over its life to the Anker's 864, so it lands at $0.29 per lifetime kilowatt-hour against $0.35. Pay $50 more now, spend less per kilowatt-hour for a decade.
Whether that matters depends on how hard you'll cycle it. A daily-drain user recoups the premium and then some; a weekend user who tops it off now and then may never reach the crossover, and for them the Anker's lower upfront price is the number that counts. The Yeti's value is real but back-loaded, and back-loaded value only pays if you stay long enough to collect it.
What the Specs Don't Tell You
Selected because: cycleLife and noiseDisclosure fire and split the difference — one for each unit.
rated cycles
Two flags fire and, unusually, they split one to each unit. The noise flag lands on the Yeti: it publishes no decibel figure, where the C300X prints 25 dB and testing found it near-silent at its rated loadA4. For a bedside or desk unit, a verified-quiet number beats a blank one.
The cycle-life flag lands on the Anker, and it's the honest catch on my own pick: the Yeti's 4,000-cycle rating outlives the C300X's 3,000, which is exactly why it costs less to own over time. One unit is quieter and one lasts longer, and neither of those is nothing. Which flag you weigh more is really the whole decision.
Growth Path
Selected because: Neither adds a battery, so the solar input (200W vs 100W) is the real off-grid growth story.
solar input
Neither of these grows by bolting on a battery, so 'growth' here means how fast you can put energy back in off-grid, and that's the Yeti's category. It takes 200W of solar input to the C300X's 100W, and a C300X reviewer flat-out named that 100W ceiling as the unit's main charging limit, wishing it supported 200WA6.
Double the input is roughly half the solar recharge time, and on a unit you're refilling from panels that compounds every single day you're out. The Anker refills faster from a wallA8, which is the right speed for a home-backup or desk role. The Yeti refills faster from the sun, which is the right speed for the backcountry. Match the charging path to where you'll actually use it and the winner picks itself.
Strengths & trade-offs
Anker SOLIX C300X
Strengths
- +Costs $50 less
- +Lighter by 4.7 lb
Trade-offs
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Yeti 300's 4,000, so it wears out sooner.
Goal Zero Yeti 300
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
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 seven 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
A 2,100Wh weekend is far more than either roughly 290Wh box holds, so neither finishes it alone, which means you're recharging in the field. That's exactly where the Yeti's 200W solar input, double the C300X's 100W, earns its extra weight, refilling in roughly half the sun. For a weekend that runs on panels, the Yeti is the one that keeps up.
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 covers this scenario's 1,645Wh: the SOLIX C300X comes up 1,400Wh short (about 15% covered), the Yeti 300 1,393Wh (15%). 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 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
Two feet from your head, capacity is a near-tie and the deciding specs are noise and weight, both the Anker's. The C300X is a published-and-verified 25 dB where Goal Zero discloses nothing, and it's 4.7 pounds lighter to set on a nightstand. Neither quite covers a full humidified night on this little capacity, but the C300X is the one that stays quiet while it tries.
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 covers this scenario's 910Wh: the SOLIX C300X comes up 665Wh short (about 27% covered), the Yeti 300 658Wh (28%). Treat this as partial cover — enough for the essentials in it, not the whole list.
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
Neither unit can hold the 400W peak this scenario needs — the SOLIX C300X on its 300W continuous rating, the Yeti 300 on its 350W, so capacity never gets a say. This is the wrong size of unit for the job rather than a close call.
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 C300X comes up 4,440Wh short (about 5% covered), the Yeti 300 4,433Wh (5%). 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
SCN-07 · an afternoon · needs 100Wh
Afternoon Off-Grid
Phones and a speaker at the park, beach, or campsite — the small-unit job description
Either unit
This is the job small stations are actually for, and both do it: the SOLIX C300X finishes at 41% used, the Yeti 300 at 40%. At this size the decider is what rides in the bag — 9 lbs for the SOLIX C300X against 13.7 for the Yeti 300 — and price, not the leftover watt-hours.
Battery budget usedlower = more headroom
LOAD Phone Charger (×2) 30W×2h · Bluetooth Speaker 10W×4h
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
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 0–16.8hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–3.4hHigh-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 18, 2026
Verdict: the Anker SOLIX C300X
For most buyers, take the Anker SOLIX C300X. It's $50 cheaper up front ($299.99 to $349.95), 4.7 pounds lighter (9 to 13.7), quieter with a published-and-verified 25 dB where Goal Zero discloses no figure, and it has the faster 140W USB-C port and an app. The Yeti's headline capacity lead is a rounding error, nine watt-hours, bought with four and a half extra pounds. But the honest counterweight is real and I won't bury it: the Yeti is the cheaper unit to own over its life, $0.29 per lifetime kilowatt-hour against $0.35, because its 4,000-cycle rating outlasts the Anker's 3,000; it pulls in solar twice as fast (200W against 100W); and it's IP54 rugged in a way the Anker isn't. So it splits by use. If you're carrying it, using it indoors, or sleeping near it, the lighter, quieter, cheaper-today C300X wins. If you're recharging off solar in the backcountry and keeping it for a decade in the weather, the Yeti earns its premium.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 18, 2026. The links below open Anker's and Goal Zero's current prices.
$299.99 · direct from Anker
Last checked 6 days ago. Prices move — check before you buy.
or check the Yeti 300 price$349.95 list
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated July 18, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): Solar Generator.
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 C300X rates 4.7/5 (81st percentile of 22 Personal-class units), and Yeti 300 rates 3.7/5 (24th 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.
UPS Switchover: ≤10ms vs ≤20ms
Both list a UPS mode, at different rated speeds. The SOLIX C300X is rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. The Yeti 300 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.
The honest catch on the Anker
The Yeti's 4,000-cycle rating outlasts the C300X's 3,000, and on a slightly larger battery that's what makes it the cheaper unit to own over its life, $0.29 per lifetime kilowatt-hour against $0.35. It's the one number that cuts against the lighter, cheaper-today Anker, and if you cycle a unit hard for a decade it's the number that matters most.
A verified number vs a blank one
The C300X publishes 25 dB and independent testing found it near-silent at its rated load; Goal Zero lists no decibel figure for the Yeti 300. Undisclosed isn't the same as loud, but for a unit you'll sit or sleep beside, a number you can read and that testing backed up beats one you have to assume.
Full record above — the Test Desk pick is the SOLIX C300X.
Check SOLIX C300X price →or check the Yeti 300 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 C300X is cheaper to buy, but the Yeti 300 is cheaper to own. At $0.29/kWh over its lifetime vs $0.35/kWh, the Yeti 300's higher cycle life and capacity make each dollar go further over the years.
Brand trust
Anker
Ecosystem
Seven or eight SOLIX stations from compact C-series to flagship F-series, riding Anker's consumer-electronics brand trust and InfiniPower cells, with some of the best dollar-per-watt-hour value in the category.
Support
US-based and historically famous for no-hassle replacements, though recent reports describe AI-driven agents giving generic answers and clumsy return logistics on heavy units. The parent reputation is strong; the SOLIX-specific experience is trending down.
Community
Moderate — active Reddit (r/Anker, r/AnkerSOLIXCommunity) and growing. Benefits from Anker's massive consumer electronics brand awareness.
App experience
Rated 4.5/5 iOS (~1,100 ratings) · 4.3/5 Android
Unique strength
Parent brand trust from Anker's consumer electronics dominance. InfiniPower technology for long cycle life. Strong $/Wh value in the mid-size and larger units — the S2000, F2600 and C1000 are among the better buys per watt-hour in the catalog.
Worth knowing
Firmware updates have occasionally removed features without warning, so keep an eye on release notes.
Goal Zero
Ecosystem
A focused Yeti lineup plus a 'Yeti-Ready' world of coolers, panels, and vehicle kits, from the pioneer that more or less invented the portable-power category.
Support
US-based company (Salt Lake City, owned by NRG Energy). Historically considered premium support, but 2025-2026 reports describe long wait times, unresponsive email communication, and tickets going unaddressed for weeks. The "premium support justifies premium pricing" argument is weakening.
Community
Small but loyal — strong following in overlanding and preparedness communities. Official community forums were recently shuttered, frustrating long-time users.
App experience
Rated 4.4/5 iOS (~1,200 ratings) but recent reviews skew negative — recurring connectivity issues, crashes, and stability problems.
Unique strength
Ruggedized, weather-resistant design and the strongest brand heritage in the space, built and supported from Salt Lake City.
Worth knowing
It's the priciest brand per watt-hour, and its once-premium support has slipped, with long waits and its community forums recently shuttered.
Analyst note
Anker is the value pick with the better app and lighter build, backed by a big brand whose service is quietly slipping. Goal Zero is the rugged heritage pick you pay a premium for, with weather sealing and longevity the Anker can't match and a support story that has slipped just as far. Buy Anker to spend less and carry less; buy Goal Zero for solar speed, ruggedness, and a decade of cycles.
Growth path
SOLIX C300X
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.
Yeti 300
FIXED CAPACITYFixed at 297Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 200W 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 Yeti 300 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 C300X
The C300X's charging story frames this matchup neatly. Its one recurring knock is the 100W solar ceiling, which a reviewer explicitly wished were 200W, also calling Anker's own panels priceyA6; from a wall, though, it refills quickly, roughly an hour to fullA8. At its rated 300W it stays near-silent, the fan only becoming audible under a heavy overload drawA4A11.
In real use it ran a 60W laptop for about four hours and a 50W mini-fridge for five and a half continuousA9, and the build reads a step above budget, with a carry handle that showed no wear after dozens of trunk loadsA12. The honest catches are all minor and sit in the app: an occasional Bluetooth pairing dropout that blocks monitoring until you re-pairA1, and one owner's report of a unit refusing to charge past 25%A2.
“The unit was confirmed to shut itself off when charging very low-draw devices like headphones or a smartwatch — an intended power-saving cutoff rather than a defect, but one that catches owners off guard.”
Sources
teqclub.com · thesolarlab.com · backuppowerhub.com
Goal Zero Yeti 300
The Yeti 300 is the rugged, long-life option. It pairs a 297Wh LiFePO4 battery rated for 4,000 cycles with IP54 dust-and-water sealing and a build reviewers single out, rubberized corners and a sturdy handle, recharging fully in under an hourB1B2. That's a decade-plus of regular use in a box you can leave out in the weatherB1.
The catches are capacity and price, and reviewers are frank about both. The 297Wh limits it to lighter duty, a laptop for four to six hours or a couple dozen phone charges, and one test watched it struggle near its 300W ceiling, shutting down after two minutes with a coffee makerB3. Even favorable reviews concede the roughly $300 price stings for the capacity you getB4. You're paying for the ruggedness and the longevity, not for raw watt-hours.
“A 297Wh LiFePO4 pack behind a 350W pure sine inverter (600W surge), rated 4,000 cycles — Goal Zero backs it with a long service life rather than raw output.”
Sources
goalzero.com · batteryskills.com · campingsolar.us · trailandkale.com · the-gadgeteer.com
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- 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. [SOLIX C300X · 2 entries]
- AC charging and UPS switchover both performed at or better than spec in hands-on testing — fast wall recharge and an imperceptible transfer that kept a computer, router, and CPAP running through a pulled plug. [SOLIX C300X · 2 entries]
- The most concrete owner-reported defects both sit in the app/charging pipeline: a Bluetooth pairing dropout that blocks monitoring, and a specific report of the battery refusing to charge past 25%. [SOLIX C300X · 2 entries]
- Modern LFP (4,000+ cycles), IP54 ruggedness, and fast charging are the praise; small capacity and high price are the caveats. [Yeti 300 · 3 entries]
- A1
“Users reported trouble connecting the C300X to the Anker app, which blocked monitoring power usage and changing settings; re-pairing by "forgetting" the device in Bluetooth settings and reconnecting through the app usually fixed it.”
teqclub.com — "Solving Common Anker C300X Problems" · unknown · [negative]
- A2
“My Anker solix c300x Portable Power Station will not accept charge more than 25%.”
teqclub.com — "Solving Common Anker C300X Problems" (quoted owner comment) · unknown · [negative]
- A4
“This unit is impressively quiet. Even with the internal fans running when we pushed it to its limits, the C300X makes virtually no noise.”
thesolarlab.com — "Anker C300X Power Station Review" · 2026 · [positive]
- A6
“The 100W solar input ceiling felt too low — the reviewer wished for 200W support — and called Anker's own solar panels expensive; a solar panel recognition delay was also noted on initial connection.”
thesolarlab.com — "Anker C300X Power Station Review" · 2026 · [negative]
- A8
“AC charging to 80% took 49 minutes in testing, matching the advertised claim; full charge landed at 65 minutes. A 100W solar panel took 3 hours 15 minutes, and 12V car charging took about 6.5 hours.”
backuppowerhub.com — "Anker SOLIX C300X Review" · 2026 · [positive]
- A9
“A 60W laptop ran 4 hours 15 minutes before hitting 20% battery; a 50W mini fridge ran 5 hours 30 minutes continuous; the unit was good for about 22 full phone charges or 9 drone-battery cycles per depletion.”
backuppowerhub.com — "Anker SOLIX C300X Review" · 2026 · [positive]
- A11
“Under a 500W circular saw load, the fan ramped up noticeably — a contrast to how quiet the unit stays at its rated 300W.”
backuppowerhub.com — "Anker SOLIX C300X Review" · 2026 · [mixed]
- A12
“The C300X feels premium in a way many budget power stations don't; the carry handle showed no wear or flex after dozens of trunk loads.”
backuppowerhub.com — "Anker SOLIX C300X Review" · 2026 · [positive]
- B1
“A 297Wh LiFePO4 pack behind a 350W pure sine inverter (600W surge), rated 4,000 cycles — Goal Zero backs it with a long service life rather than raw output.”
goalzero.com / batteryskills.com — Yeti 300 review · 2026 · [positive]
- B2
“At 13.7 lbs, meets IP54 for dust and water resistance, with top-tier build quality — rubberized corners and a sturdy handle; recharges 0-100% in 50 minutes.”
campingsolar.us / trailandkale.com — Yeti 300 review · 2026 · [positive]
- B3
“The 297Wh capacity limits it to lighter-duty use — 4-6 hours on a laptop or 20-30 phone charges — and it struggled near its 300W limit, shutting down after 2 minutes with a coffee maker.”
batteryskills.com — Yeti 300 review · 2026 · [mixed]
- B4
“A modern LFP (not NMC) rugged compact unit, though at $349.95 the price stings for the capacity.”
the-gadgeteer.com — Yeti 300 review · 2026 · [mixed]
Research compiled July 18, 2026.
Who Should Buy Which
Buy the SOLIX C300X if you…
- →The one-hand carrier: 9 pounds against 13.7 is the difference you feel every time you move it.
- →The CPAP user or desk worker: a published, verified 25 dBA4 beats the Yeti's undisclosed noise for anything you sit or sleep beside.
- →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.
Buy the Yeti 300 if you…
- →The solar-first, off-grid user: 200W of input to the Anker's 100W refills from panels in roughly half the time.
- →The keep-it-a-decade owner who cycles it often: the 4,000-cycle battery makes it cheaper to own at $0.29 per lifetime kilowatt-hour despite the higher sticker.
- →The rough-conditions buyer: IP54 sealing means it shrugs off dust and rain the Anker isn't built forB2.
If neither fits
If you need to power a fridge through a real blackout or cover a camping weekend, roughly 290Wh is too small on either unit, so step up to a 500Wh-plus class. And if you only ever charge a phone and earbuds, a large USB-C power bank does that job for far less money and weight than either of these.
The Bottom Line
The C300X wins the everyday case: $50 cheaper up front, 4.7 pounds lighter, quieter with a verified 25 dBA4, and it surrenders only nine watt-hours to do it. For a unit you carry, use indoors, or sleep beside, that's the stronger all-round package, and the Yeti's extra weight buys almost no extra energy.
But the Yeti's case is honest and specific, so weigh it before you decide: it's the cheaper unit to own over a decade at $0.29 per lifetime kilowatt-hour, it takes in solar twice as fast at 200W, and it's IP54 rugged. If you're recharging off panels in the backcountry and keeping it for years in the weather, pay the $50 and carry the extra pounds. Everyone else takes the lighter, quieter, cheaper-today Anker.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
The Yeti 300 costs more but is it the better value?
It depends on how long you keep it and how hard you use it. Up front the C300X is cheaper, $299.99 to $349.95, but the Yeti is cheaper to own over its life, $0.29 per lifetime kilowatt-hour to $0.35, because its 4,000-cycle battery outlasts the Anker's 3,000. Cycle it daily for a decade and the Yeti wins on cost; use it a few weekends a year and the Anker's lower price is the one you'll actually feel.
Why is the Yeti 300 so much heavier for basically the same capacity?
Because you're paying weight for ruggedness, not capacity. The Yeti holds just nine more watt-hours than the C300X, 297 to 288, but weighs 4.7 pounds more, and that mass is its IP54 dust-and-water sealing and reinforced build. Outdoors in rough conditions that armor is worth carrying; for indoor or grab-and-go use it's weight without a payoff.
Which charges faster from solar?
The Yeti, by a wide margin. It accepts 200W of solar input to the C300X's 100W, so it refills from panels in roughly half the time, and the C300X's own reviewers named that 100W ceiling as its main charging limit. If you recharge off-grid from the sun, that's the Yeti's single most decisive advantage. From a wall outlet, the gap disappears and the Anker refills quickly.
Which is quieter and better for a bedroom or CPAP?
The C300X. It's rated at 25 dB and independent testing found it near-silent at its rated load, while Goal Zero doesn't publish a noise figure for the Yeti 300 at all. It's also 4.7 pounds lighter to move onto a nightstand. For anything running two feet from your head overnight, the Anker is the safer, quieter choice.
Where to buy
Anker SOLIX C300XPick
$299.99
$299.99 · direct from Anker
Last checked 6 days ago. Prices move — check before you buy.
Goal Zero Yeti 300
$349.95
$349.95 · direct from Goal Zero
Last checked 6 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.