Head-to-head test
Anker SOLIX C300X vs Goal Zero Yeti 500X
Real-world runtimes, scenario verdicts, and ownership costs compared — which wins for your use case.
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
Anker
SOLIX C300X
1,666Power Score · Device Hub
$299.99 list · direct from Anker
Goal Zero
Yeti 500X
1,252Power Score · Device Hub
$499.95 list · direct from Goal Zero
Spec deltas
The Anker SOLIX C300X (288Wh) and Goal Zero Yeti 500X (497Wh) sit in different weight classes. The real question: do your power needs justify the larger unit, or would you be overpaying for capacity that sits unused? We'd buy the SOLIX C300X.
The Yeti 500X's 497Wh keeps a fridge going for 3 hours. The SOLIX C300X's 288Wh manages 2 hours. The bigger unit rides out a full weekend outage. The smaller one needs a recharge by Saturday night. But if your actual use case is camping, tailgating, or keeping devices charged, the SOLIX C300X does the job at 9 lbs and $300 — no overkill, no regret.
Pick the SOLIX C300X if you want maximum capability and room to grow. Go with the Yeti 500X if you primarily need it for cpap overnight. Most buyers overlook this: the SOLIX C300X costs ~$0.35/kWh over its full lifespan, which adds up significantly over years of regular 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 C300X
At 300W, this unit is strictly for personal electronics (phones, laptops) and small CPAP machines. Do not expect to run kitchen appliances. At only 9 lbs, it is exceptionally portable. You can easily carry it one-handed to a campsite or tailgating party.
Strengths
- +Costs $200 less
- +Lighter by 3.9 lb
- +Longer warranty
Trade-offs
- –No major technical downsides compared to rival.
Goal Zero Yeti 500X
At 300W, this unit is strictly for personal electronics (phones, laptops) and small CPAP machines. Do not expect to run kitchen appliances. At only 12.9 lbs, it is exceptionally portable. You can easily carry it one-handed to a campsite or tailgating party.
Strengths
- +Larger battery capacity
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$200) than the SOLIX C300X.
- –Lacks smartphone app control for remote monitoring.
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
Yeti 500X
The SOLIX C300X runs out of juice. It only has 245Wh usable, but this scenario needs 320Wh. The Yeti 500X covers it and still has 7h of phone charging left over.
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
Neither unit can fully handle this scenario (needs 670Wh). You'd need a higher-capacity station or to cut back on usage.
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
For this load: Yeti 500X runs 2.1h vs 1.2h.
$499.95 list · direct from Goal Zero
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 0–28.2hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–5.6hHigh-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 10, 2026
Verdict: the SOLIX C300X
The SOLIX C300X outperforms the Yeti 500X in key areas. It offers . Crucially, it costs $200 less, making it the smarter financial choice.
Overall score margin: 1,666 vs 1,252 (+33.1%)
List prices as of July 10, 2026. The links below open Anker's and Goal Zero's current prices.
$299.99 list · direct from Anker
or check the Yeti 500X price$499.95 list
Written by Wenny Zheng, Portable Power 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, Tailgating.
Full specifications
| Specification | SOLIX C300X★ Our pick | Yeti 500X |
|---|---|---|
| Price | $299.99 Check latest price | $499.95 Check latest price |
| Capacity (Wh) | 288 | 497 |
| Output (W) | 300 | 300 |
| Surge Peak | 600W | 600W |
| AC Outlets | 3 | 1 |
| USB-C Charging Outputs | 140W | 60W |
| Solar Input (W) | 100 | 120 |
| Weight (lbs) | 9 | 12.9 |
| UPS | Yes (10ms) | Yes |
| Charging Cycles | 3000 | 500 |
| Chemistry | LiFePO4 | NMC |
| Warranty (Years) | 5 | 2 |
| Battery Expansion Feasibility | No | No |
| App Control | Yes | No |
| $/Watt Hour | $1.04 | $1.01 |
| Noise Level (db) | 25 | N/A |
| Solar Input Type | XT-60 (11-28V) | Standard (14-50V) |
| USB-A Ports | 1 | 2 |
| USB-C Ports | 3 | 2 |
| Cost per Whᵈ | $1.04/Wh | $1.01/Wh |
ᵈ Derived: price ÷ rated capacity.
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.
Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
Yeti 500X: No App Control
Without app control, you have to physically walk to the Yeti 500X to check battery level, adjust settings, or monitor power draw. The SOLIX C300X lets you do all that from your phone, including getting low-battery alerts.
UPS Speed: line-interactive (<10ms) vs basic standby
The SOLIX C300X switches to battery in 10ms (line-interactive (<10ms)), while the Yeti 500X takes 25ms (basic standby). Safe for desktop PCs, routers, and CPAP machines. NAS drives are protected. This matters if you're using it as a home UPS for always-on equipment.
Warranty Value Comparison
The SOLIX C300X gives you 16.7 years of warranty per $1,000 spent, vs the Yeti 500X's 4 years. That's 4.2× more coverage per dollar. An underrated factor if you're keeping this unit for years.
Battery Lifespan in Real Years
The SOLIX C300X is rated for 3,000 cycles vs 500. In real life: at daily use, that's 8.2 vs 1.4 years. At weekend use (twice a week), it's 29 vs 5 years. After hitting the cycle limit, the battery doesn't die. It drops to ~80% original capacity, which is still very usable.
Yeti 500X: Noise Level Not Disclosed
The SOLIX C300X publishes its noise level (25dB), but the Yeti 500X doesn't. Brands that don't disclose noise specs often have louder units. If noise matters to you (CPAP users, apartment dwellers), this is worth investigating before buying.
Full record above — the Test Desk pick is the SOLIX C300X.
Check SOLIX C300X price →or check the Yeti 500X 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.
| Metric | SOLIX C300X | Yeti 500X |
|---|---|---|
| Purchase price | $299.99 | $499.95 |
| Lifetime energy delivery | 864 kWh | 249 kWh |
| Cost per lifetime kWh | $0.35 | $2.01 |
| Cost per warranty year | $60/yr | $250/yr |
| Battery lifespan | 8.2yr daily · 28.8yr weekends · 57.7yr weekly | 1.4yr daily · 4.8yr weekends · 9.6yr weekly |
Analyst note
The SOLIX C300X wins on both sticker price and long-term value. At $0.35/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Delivers each lifetime kWh for $1.66 less — check the SOLIX C300X price →
Brand trust
Anker
Ecosystem
7-8 SOLIX portable power stations across C-series (compact) and F-series (flagship), plus the X1 home energy system
Support
US-based support. Historically known for incredible no-hassle replacements, but recent reports describe AI-driven support agents giving generic responses and complex return logistics for heavy units (hazmat shipping). The Anker brand reputation is still strong, but SOLIX-specific support quality 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. Gen 2 lineup offers exceptional $/Wh value — some of the best in the market.
Worth knowing
Support quality appears to be declining from its historically excellent level. Firmware updates have removed features without warning. Expansion ecosystem is smaller than EcoFlow's.
Goal Zero
Ecosystem
Focused — 5-6 active portable power station models across Yeti and Yeti Pro series, plus Alta coolers, Nomad/Ranger solar panels, and vehicle integration kits
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
Pioneer of the portable power market — strongest brand heritage. US-based company with ruggedized, weather-resistant designs (IPX4). Integrated "Yeti-Ready" ecosystem with coolers, lights, and vehicle kits.
Worth knowing
Widely acknowledged as the most expensive brand (lowest Wh per dollar). Support quality has declined from its "premium" standard. Perceived as competitively stagnant vs. faster-innovating Chinese competitors. Reliability reports on newer models are concerning.
Analyst note
Goal Zero positions itself as a premium brand with stronger support infrastructure, while Anker competes on value. The question is whether the Goal Zero ecosystem and support premium is worth it for your use case.
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 500X
FIXED CAPACITYFixed at 497Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 120W of solar. Limited to a single portable panel.
Limited ports. You'll likely need a power strip or splitter.
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 500X gives you the larger ceiling); you can't add to either later.
The Bottom Line
The full picture comes down to this. The SOLIX C300X 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 Yeti 500X wins in the scenarios that match your life, it's the right choice regardless of aggregate scores.
If neither the SOLIX C300X nor the Yeti 500X feels like the right fit, your power needs probably sit outside what these two target. If you're planning whole-home backup or running power-hungry appliances (electric heaters, window AC), you'll want a larger system in the 3,000–5,000Wh range with expansion battery support. Prices on portable power stations fluctuate frequently. Both Anker and Goal Zero 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.
Is the Yeti 500X worth $200 more than the SOLIX C300X?
The short answer: yes, if you'll actually use the extra capability. The Yeti 500X costs $200 more, but that premium buys you 209Wh more battery capacity (that's 1 extra hours of running a mini-fridge); 20W faster solar charging for quicker off-grid recovery. On a cost-per-watt-hour basis, you're paying $1.01/Wh vs $1.04/Wh. For regular use, we'd pay the premium.
"3,000 vs 500 cycles" — what does that actually mean for me?
In real years: the SOLIX C300X (3,000 cycles) lasts 8.2 years at daily use, 29 years at weekend use (twice a week), or 125 years at twice-monthly camping trips. The Yeti 500X (500 cycles): 1.4 years daily, 5 years weekends, or 21 years twice-monthly. What most people miss: hitting the cycle limit doesn't kill your battery. Capacity drops to about 80%. Your 288Wh unit becomes a ~230Wh unit. Still very usable. For weekend users, both batteries will outlast the warranty by years.
Is Anker or Goal Zero more reliable for long-term ownership?
Both brands have strengths and trade-offs. Anker: 5-year warranty standard on portable stations, 10-year on home energy systems. Historically very reliable, though some recent firmware updates have altered product functionality without notice or rollback option. Goal Zero: 5 years on LFP models, 2 years on older NMC models. Battery must be charged within 7 days of purchase and every 6 months to maintain warranty (strict). Product reliability concerns have increased — repeat "Battery Fault" errors reported even on newer Yeti Pro 4000. One piece of advice from the power station community: regardless of brand, buy from Costco or Amazon. Their return policies provide a safety net that manufacturer warranties alone can't match, especially for a product you'll rely on in emergencies. Both brands use LFP (lithium iron phosphate) batteries in their current lineup, the most proven chemistry for longevity and safety.
Bottom line: should I buy the SOLIX C300X or the Yeti 500X?
We'd buy the SOLIX C300X. Strong value at a lower price, and for most real-world use cases the spec gaps don't translate to meaningful capability gaps. The Yeti 500X makes sense only if you specifically need its higher capacity for demanding sustained loads like full-home backup or commercial use.
Where to buy
Anker SOLIX C300XPick
$299.99
$299.99 list · direct from Anker
Goal Zero Yeti 500X
$499.95
$499.95 list · direct from Goal Zero
Prices may vary by retailer and are subject to change.