Anker SOLIX C300 vs BLUETTI Apex 300 + B300K
The Anker SOLIX C300 (288Wh) and BLUETTI Apex 300 + B300K (5,530Wh) 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? The Apex 300 + B300K has a slight edge, but the margin is close enough that your use case should break the tie.
What the spec gap means in practice: the Apex 300 + B300K's 3,840W inverter can run a window AC unit, a full-size fridge, or power tools. The SOLIX C300's 300W inverter will flat-out refuse to start those appliances. On stamina, the Apex 300 + B300K keeps a fridge alive for roughly 31 hours vs the SOLIX C300's 2 hours. The cost? Portability. At 148.8 lbs, the Apex 300 + B300K is a two-person lift you set down once and leave. The SOLIX C300 at 9.1 lbs is something one person can actually carry.
Pick the Apex 300 + B300K if your primary use is weekend camping or 8-hour blackout. Go with the SOLIX C300 if you need the heavier-duty specs for demanding loads. Most buyers overlook this: the Apex 300 + B300K costs ~$0.13/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.
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The Breakdown
What each unit does well, where it falls short, and the trade-offs that matter.
SOLIX C300 Analysis
At 300W, this unit is strictly for personal electronics (phones, laptops) and small CPAP machines. Do not expect to run kitchen appliances. At only 9.1 lbs, it is exceptionally portable. You can easily carry it one-handed to a campsite or tailgating party.
Strengths
- Save $2,359 vs Competitor
- 139.7 lbs Lighter
Trade-offs & Considerations
- Weaker inverter (-3,540W) limits appliance compatibility.
- Battery capacity cannot be expanded if your needs grow.
Apex 300 + B300K Analysis
With a massive 3,840W output (and 7,680W surge), the Apex 300 + B300K can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 148.8 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion. A standout feature is the value proposition: at roughly $0.47 per watt-hour, it's one of the most cost-effective options on the market.
Strengths
- Larger Battery Capacity
- Higher AC Output Power
- Faster Solar Charging
Trade-offs & Considerations
- Substantially more expensive (+$2,359) than the SOLIX C300.
- Significantly heavier (+139.7 lbs), making it harder to move.
- Very heavy unit that may be difficult for one person to lift.
What the Specs Don't Tell You
Hidden gotchas and advantages we spotted that you won't find on the product page.
Apex 300 + B300K: 148.8 lbs Is a Commitment
Watch outAt 148.8 lbs, this is a two-person lift. Plan your placement carefully. Once it's set up, you won't want to move it. It's a semi-permanent appliance. Pick your spot.
Apex 300 + B300K: 45dB Under Load
Note45dB is about as loud as a running refrigerator. If you're running a CPAP or sleeping near this unit, the fan noise may be noticeable. Most people find anything above 45dB disruptive for sleep.
SOLIX C300: No Expansion Path
Watch outThe SOLIX C300 is a closed system. The 288Wh you buy today is the ceiling. If your power needs grow (more gear, longer trips, partial home backup), you'd need to buy a completely new unit. The Apex 300 + B300K can add expansion batteries.
Warranty Value Comparison
NoteThe SOLIX C300 gives you 20.8 years of warranty per $1,000 spent, vs the Apex 300 + B300K's 1.9 years. That's 10.8× more coverage per dollar. An underrated factor if you're keeping this unit for years.
Your Life, Your Pick
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
Weekend Camping
2 nights
Two nights off-grid with essential comfort
The SOLIX C300 runs out of juice. It only has 245Wh usable, but this scenario needs 2,100Wh. The Apex 300 + B300K covers it and still has 173h of phone charging left over.
8-Hour Blackout
8 hours
Keep the essentials running through a night without power
The SOLIX C300 runs out of juice. It only has 245Wh usable, but this scenario needs 1,645Wh. The Apex 300 + B300K covers it and still has 204h of phone charging left over.
CPAP Overnight
8 hours
Sleep therapy without interruption — the #1 medical use case
The SOLIX C300 runs out of juice. It only has 245Wh usable, but this scenario needs 320Wh. The Apex 300 + B300K covers it and still has 292h of phone charging left over.
Remote Workday
8 hours
Full work day off-grid without power anxiety
The SOLIX C300 runs out of juice. It only has 245Wh usable, but this scenario needs 910Wh. The Apex 300 + B300K covers it and still has 253h of phone charging left over.
Tailgate Party
4 hours
Game day power for the crew
The SOLIX C300's 300W output can't handle the 400W peak demand. The Apex 300 + B300K handles this scenario with 4,030Wh to spare.
Van Life Daily
24 hours
A full day of mobile living — the ultimate endurance test
The SOLIX C300 runs out of juice. It only has 245Wh usable, but this scenario needs 4,685Wh. The Apex 300 + B300K covers it and still has 1h of phone charging left over.
Will It Power Your Gear?
Real-world runtime estimates for common appliances. Based on 85% inverter efficiency — actual results vary with temperature and load cycling.
Essentials
The basics you need running| Appliance | SOLIX C300 | Apex 300 + B300K |
|---|---|---|
😴 CPAP Machine 40W draw | 6.1h0 full nights | ★117.5h14 full nights |
📱 Phone Charger 15W draw | 16.3h | ★313.3h |
📡 Router + Modem 20W draw | 12.2h | ★235h |
💡 LED Lights (4 bulbs) 40W draw | 6.1h | ★117.5h |
💻 Laptop (Working) 60W draw | 4.1h | ★78.3h |
Comfort & Convenience
Makes off-grid life actually enjoyable| Appliance | SOLIX C300 | Apex 300 + B300K |
|---|---|---|
🌀 Box Fan 75W draw | 3.3h | ★62.7h |
📺 LED TV (55") 80W draw | 3.1h | ★58.8h |
🧊 Mini-Fridge 150W draw | 1.6h | ★31.3h |
🛏️ Electric Blanket 200W draw | 1.2h0 full nights | ★23.5h2 full nights |
High-Draw Appliances
These reveal the real limits| Appliance | SOLIX C300 | Apex 300 + B300K |
|---|---|---|
☕ Coffee Maker 1000W draw | ✗ Can't Run | ★4.7h |
🍽️ Microwave 1200W draw | ✗ Can't Run | ★3.9h |
🔥 Space Heater 1500W draw | ✗ Can't Run | ★3.1h |
Runtime = (capacity × 0.85) ÷ appliance watts. Actual runtime varies with battery age, temperature, and simultaneous loads.
Expert Verdict
Apex 300 + B300K Edges Ahead on Power Score
These two units are closely matched on individual specs, but our Power Score analysis gives the Apex 300 + B300K the edge with a composite score of 6,552 vs 1,772.
Based on 18+ spec comparisons and real-world performance data
Power Score Breakdown
How each unit performs across our segmented benchmarks
| Benchmark | SOLIX C300 | Apex 300 + B300K |
|---|---|---|
| Overall Power Score | 1,772Device Hub | ★6,552The AC & Fridge Zone |
| UPSResponse & Reliability | 2,736 | ★4,976 |
| RV LivingEnergy Density & Output | — | 6,541 |
| Home BackupCapacity & Resilience | — | 6,567 |
| CPAPSleep Therapy Reliability | 2,743 | ★4,489 |
| Solar GeneratorSolar Input & Efficiency | — | 6,167 |
| TailgatingOutlets & Portability | 1,952 | — |
| Food TruckSustained Heavy Output | — | 6,112 |
| Apartment BalconyCompact Solar Living | 2,013 | — |
| CampingLightweight & Versatile | 1,978 | — |
Power Score is our proprietary benchmark calculated from 14 spec dimensions. Higher = better. "—" means the product doesn't meet the minimum threshold for that bench.
Full Specification Breakdown
| Feature | SOLIX C300 | Apex 300 + B300K |
|---|---|---|
| Price | ★$239.99 | $2,599.00 |
| Capacity (Wh) | 288 | ★5529.6 |
| Output (W) | 300 | ★3840 |
| Surge Peak | 600W | ★7680W |
| AC Outlets | 3 | ★6 |
| USB-C Charging Outputs | ★140W, 100W | 100W |
| Solar Input (W) | 100 | ★2400 |
| Weight (lbs) | ★9.1 | 148.8 |
| UPS | Yes (<10ms) | Yes (<10ms) |
| Charging Cycles | 3000 | ★3500+ |
| Warranty (Years) | 5 | 5 |
| Battery Expansion Feasibility | No | Yes |
| App Control | Yes | Yes |
| $/Watt Hour | $.83 | ★$.47 |
| Noise Level (db) | ★25 | 45 |
| Solar Input Type | ★XT-60 | MC4 |
| USB-A Ports | 2 | 2 |
| USB-C Ports | 2 | 2 |
| Cost per Wh (calculated) | $0.83/Wh | ★$0.47/Wh |
Beyond the Specs: Owning It
What happens after you click “Buy” — reliability, brand trust, growth potential, and true cost of ownership.
Lifetime Value
SOLIX C300
Battery lifespan: 8.2yr daily · 28.8yr weekends · 57.7yr weekly
Apex 300 + B300K
Battery lifespan: 9.6yr daily · 33.7yr weekends · 67.3yr weekly
The SOLIX C300 is cheaper to buy, but the Apex 300 + B300K is cheaper to own. At $0.13/kWh over its lifetime vs $0.28/kWh, the Apex 300 + B300K's higher cycle life and capacity make each dollar go further over the years.
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.
BLUETTI
Ecosystem
Varies — check manufacturer website for full product lineup
Support
Limited data available — check recent reviews and community forums
Community
Smaller community — fewer independent reviews and user reports
App Experience
Rated Not rated
Unique Strength
Check manufacturer website for differentiators
Worth Knowing
Less established brand — fewer long-term reliability reports available
Anker and BLUETTI are close competitors. Both have established support channels and growing ecosystems. Compare their specific warranty terms and community size for your peace of mind.
Growth Path
SOLIX C300
🔒 Closed SystemClosed system. What you buy is what you get. If your needs outgrow 288Wh, you'll need to purchase an entirely new unit.
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.
Apex 300 + B300K
✓ ExpandableSupports expansion batteries from BLUETTI. You can increase capacity without replacing the base unit. A significant long-term advantage.
Accepts up to 2,400W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are BLUETTI-specific. You're investing in the BLUETTI ecosystem.
If your power needs might grow (more camping gear, longer trips, partial home backup), the Apex 300 + B300K's expansion path saves you from buying a whole new unit in 2 years. That flexibility has real dollar value.
The Bottom Line
The full picture comes down to this. The Apex 300 + B300K 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 SOLIX C300 wins in the scenarios that match your life, it's the right choice regardless of aggregate scores.
If neither the SOLIX C300 nor the Apex 300 + B300K feels like the right fit, your power needs probably sit outside what these two target. Use our comparison tool above to explore alternatives that better match your specific wattage and runtime requirements. Prices on portable power stations fluctuate frequently. Both Anker and BLUETTI discount regularly, so check the current price before committing. Prime Day and Black Friday pricing typically drops 20-30%.
Frequently Asked Questions
SOLIX C300 vs Apex 300 + B300K — answered by our testing team.
Q.Is the Apex 300 + B300K worth $2,359 more than the SOLIX C300?
The short answer: yes, if you'll actually use the extra capability. The Apex 300 + B300K costs $2,359 more, but that premium buys you 5,241.6Wh more battery capacity (that's 30 extra hours of running a mini-fridge); 3,540W higher AC output (opening the door to more demanding appliances); a longer-lasting battery rated for 3,500 cycles — that's 10 years at daily use; 2,300W faster solar charging for quicker off-grid recovery. On a cost-per-watt-hour basis, you're paying $0.47/Wh vs $0.83/Wh. Factor in cycle life and the math flips: the Apex 300 + B300K costs $0.13/kWh over its lifetime vs $0.28/kWh. The "expensive" unit is actually cheaper to own. For regular use, we'd pay the premium.
Q.How does the 5,241.6Wh capacity difference actually affect daily use?
The Apex 300 + B300K's 5,529.6Wh battery keeps a mini-fridge running for roughly 31 hours vs the SOLIX C300's 2 hours. Where it really matters: during an 8-hour blackout running your fridge, router, lights, AND charging your phone simultaneously (about 1,645Wh total), the Apex 300 + B300K handles it while the SOLIX C300 runs dry. What specs don't mention: runtime drops 20-30% in cold weather (below 32°F/0°C) as battery chemistry slows down. The Apex 300 + B300K's extra capacity provides a critical cold-weather buffer. For occasional phone and laptop charging, both are overkill. This gap only matters for sustained, multi-appliance use.
Q.Can I actually carry the Apex 300 + B300K, or is the SOLIX C300 the only portable option?
The SOLIX C300 at 9.1 lbs is genuinely grab-and-go. Toss it in a backpack, carry it one-handed to a picnic, take it on a boat. The Apex 300 + B300K at 148.8 lbs is a different story. It's like carrying a large suitcase full of books. If you're setting up and breaking down camp frequently, this weight difference will exhaust you by day two.
Q.How fast can each unit recharge from solar panels in real conditions?
On paper, the Apex 300 + B300K accepts 2,400W vs the SOLIX C300's 100W of solar input. What the spec sheet won't tell you: solar panels typically deliver only 60-80% of their rated output due to panel angle, cloud cover, and temperature. In realistic conditions, expect full recharge in about 3.3 hours for the Apex 300 + B300K and 4.1 hours for the SOLIX C300. That gap widens on cloudy days, when the Apex 300 + B300K's higher input ceiling captures more of whatever sunlight is available. One more thing: summer gives you ~7 productive solar hours per day. Winter drops to ~4. If solar is your primary recharge method, the Apex 300 + B300K's advantage is substantial.
Q.What happens if I outgrow the SOLIX C300's 288Wh capacity?
With the SOLIX C300, you'd need to buy an entirely new power station. It's a closed system with no expansion port. The Apex 300 + B300K supports BLUETTI-compatible expansion batteries that can double or triple your total capacity without replacing the base unit. Say you start with weekend camping and six months later you want to run a mini-fridge full-time in a van. The Apex 300 + B300K scales with you. The SOLIX C300 forces a repurchase. Worth considering even if you don't need more capacity today. Power needs tend to grow.
Q.Is Anker or BLUETTI 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. BLUETTI: Check manufacturer warranty policy directly 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.
Q.Bottom line: should I buy the SOLIX C300 or the Apex 300 + B300K?
We'd pay the premium for the Apex 300 + B300K. Yes, it costs more. The capability jump is real: you're stepping into a tier that handles appliances the base model can't start. The SOLIX C300 is still solid if budget is the priority, but the Apex 300 + B300K will leave you less likely to wish you'd "gone bigger" six months from now. That regret costs more than the price difference.
Still Deciding?
These expert guides cover the best picks for your use case — with calculators, comparison tables, and recommendations.
CPAP Power Guide
Tested runtime with ResMed & Philips machines
Read GuideEmergency / UPS Guide
Instant switchover stations for home backup
Read GuideSolar Generators
Charge from your balcony panels — no outlet needed
Read GuideBest for RV
Off-grid power stations with solar input & expansion
Read GuideFull Comparison Tool
Compare SOLIX C300 vs Apex 300 + B300K side-by-side with every spec
Open ToolReady to Decide?
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