Anker SOLIX F3800 vs BLUETTI Apex 300 + B300K
The Anker SOLIX F3800 and BLUETTI Apex 300 + B300K compete for the same spot. Similar LiFePO4 capacity, similar price range, different brands behind them. In this matchup, ecosystem, app quality, and warranty reputation matter as much as raw specs. We'd buy the Apex 300 + B300K.
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 F3800's 6,000W 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 F3800's 22 hours.
Pick the Apex 300 + B300K if your primary use is weekend camping or 8-hour blackout. Go with the SOLIX F3800 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.
Power Station Arena is reader-supported. We may earn a commission when you buy through our links — at no cost to you. Learn more.
The Breakdown
What each unit does well, where it falls short, and the trade-offs that matter.
SOLIX F3800 Analysis
With a massive 6,000W output (and 9,000W surge), the SOLIX F3800 can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 132.3 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion.
Strengths
- 16.5 lbs Lighter
- Higher AC Output Power
Trade-offs & Considerations
- Very heavy unit that may be difficult for one person to lift.
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
- Save $100 vs Competitor
- Larger Battery Capacity
Trade-offs & Considerations
- Significantly heavier (+16.5 lbs), making it harder to move.
- Weaker inverter (-2,160W) limits appliance compatibility.
- 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.
Weight Reality Check
Watch outNeither unit is grab-and-go. The SOLIX F3800 (132.3 lbs) is a two-person lift. The Apex 300 + B300K (148.8 lbs) is firmly a two-person lift. It goes where you put it and stays there. That's a 17 lb difference.
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.
Surge Power: Inverter Quality Indicator
AdvantageThe Apex 300 + B300K has a 2× surge-to-continuous ratio vs the SOLIX F3800's 1.5×. A higher ratio (≥2×) means the inverter handles motor startup surges better. That's critical for fridges, AC compressors, and power tools that briefly draw 2-3× their rated wattage. The SOLIX F3800 may trip when starting these appliances even though its continuous wattage looks sufficient.
UPS Speed: line-interactive (<10ms) vs standby (<20ms)
NoteThe Apex 300 + B300K switches to battery in 10ms (line-interactive (<10ms)), while the SOLIX F3800 takes 20ms (standby (<20ms)). 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.
SOLIX F3800: Noise Level Not Disclosed
Watch outThe Apex 300 + B300K publishes its noise level (45dB), but the SOLIX F3800 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.
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 F3800 cuts it close at 64%. One cold night or an unexpected device and you're rationing power. The Apex 300 + B300K finishes at 45%, leaving real headroom for spontaneous use. If you camp in variable weather, that buffer keeps you relaxed instead of checking your battery app every 20 minutes.
8-Hour Blackout
8 hours
Keep the essentials running through a night without power
Both survive, but the Apex 300 + B300K finishes at just 35% used. That's enough reserve for a second blackout night. The SOLIX F3800 at 50% leaves little margin if the outage runs longer than expected. In storm-prone areas, that remaining capacity is insurance.
CPAP Overnight
8 hours
Sleep therapy without interruption — the #1 medical use case
Both are wildly overqualified for CPAP. You're using 10% or less. Save your money and buy whichever is cheaper; the extra capacity is completely wasted on a 40W overnight load. Put the savings toward a second battery for multi-night trips.
Remote Workday
8 hours
Full work day off-grid without power anxiety
Both power your workstation all day without breaking a sweat. At these utilization levels, prioritize the unit with better USB-C output for direct laptop charging. It's more convenient than using the AC inverter and wastes less energy.
Tailgate Party
4 hours
Game day power for the crew
Both handle game day easily. Since capacity isn't the deciding factor, consider weight: the lighter unit is easier to load into a truck bed. Also check if either has Bluetooth speaker-level noise. Fan sound matters in social settings.
Van Life Daily
24 hours
A full day of mobile living — the ultimate endurance test
The SOLIX F3800 runs out of juice. It only has 3,264Wh 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 F3800 | Apex 300 + B300K |
|---|---|---|
😴 CPAP Machine 40W draw | 81.6h10 full nights | ★117.5h14 full nights |
📱 Phone Charger 15W draw | 217.6h | ★313.3h |
📡 Router + Modem 20W draw | 163.2h | ★235h |
💡 LED Lights (4 bulbs) 40W draw | 81.6h | ★117.5h |
💻 Laptop (Working) 60W draw | 54.4h | ★78.3h |
Comfort & Convenience
Makes off-grid life actually enjoyable| Appliance | SOLIX F3800 | Apex 300 + B300K |
|---|---|---|
🌀 Box Fan 75W draw | 43.5h | ★62.7h |
📺 LED TV (55") 80W draw | 40.8h | ★58.8h |
🧊 Mini-Fridge 150W draw | 21.8h | ★31.3h |
🛏️ Electric Blanket 200W draw | 16.3h2 full nights | ★23.5h2 full nights |
High-Draw Appliances
These reveal the real limits| Appliance | SOLIX F3800 | Apex 300 + B300K |
|---|---|---|
☕ Coffee Maker 1000W draw | 3.3h | ★4.7h |
🍽️ Microwave 1200W draw | 2.7h | ★3.9h |
🔥 Space Heater 1500W draw | 2.2h | ★3.1h |
Runtime = (capacity × 0.85) ÷ appliance watts. Actual runtime varies with battery age, temperature, and simultaneous loads.
Expert Verdict
The Apex 300 + B300K is the Superior Choice
The Apex 300 + B300K takes the lead. It packs 1,689.6Wh more capacity than the SOLIX F3800. With a price tag that is $100 lower, it provides significantly better value.
Based on 18+ spec comparisons and real-world performance data
Power Score Breakdown
How each unit performs across our segmented benchmarks
| Benchmark | SOLIX F3800 | Apex 300 + B300K |
|---|---|---|
| Overall Power Score | 6,013The AC & Fridge Zone | ★6,552The AC & Fridge Zone |
| UPSResponse & Reliability | 4,041 | ★4,976 |
| RV LivingEnergy Density & Output | 6,161 | ★6,541 |
| Home BackupCapacity & Resilience | 5,856 | ★6,567 |
| CPAPSleep Therapy Reliability | 3,576 | ★4,489 |
| Solar GeneratorSolar Input & Efficiency | 5,672 | ★6,167 |
| Food TruckSustained Heavy Output | ★6,395 | 6,112 |
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 F3800 | Apex 300 + B300K |
|---|---|---|
| Price | $2699.00 | ★$2,599.00 |
| Capacity (Wh) | 3840 | ★5529.6 |
| Output (W) | ★6000 | 3840 |
| Surge Peak | ★9000W | 7680W |
| AC Outlets | ★8 | 6 |
| USB-C Charging Outputs | 100W | 100W |
| Solar Input (W) | 2400 | 2400 |
| Weight (lbs) | ★132.3 | 148.8 |
| UPS | ★Yes (<20ms) | Yes (<10ms) |
| Charging Cycles | 3000 | ★3500+ |
| Warranty (Years) | 5 | 5 |
| Battery Expansion Feasibility | Yes | Yes |
| App Control | Yes | Yes |
| $/Watt Hour | $.70 | ★$.47 |
| Noise Level (db) | N/A | 45 |
| Solar Input Type | Proprietary | MC4 |
| USB-A Ports | 2 | 2 |
| USB-C Ports | ★3 | 2 |
| Cost per Wh (calculated) | $0.70/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 F3800
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 Apex 300 + B300K wins on both sticker price and long-term value. At $0.13/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
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 F3800
✓ ExpandableSupports expansion batteries from Anker. 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 Anker-specific. You're investing in the Anker ecosystem.
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.
Neither locks you out of growth. Pick based on other factors.
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 F3800 wins in the scenarios that match your life, it's the right choice regardless of aggregate scores.
If neither the SOLIX F3800 nor the Apex 300 + B300K feels like the right fit, your power needs probably sit outside what these two target. For lighter use — weekend camping or phone/laptop charging — you'd be overpaying for capacity you'll rarely tap. Consider a unit in the 500–1,500Wh range instead. 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 F3800 vs Apex 300 + B300K — answered by our testing team.
Q.How does the 1,689.6Wh 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 F3800's 22 hours. Both can handle a full 8-hour blackout setup (fridge + router + lights + phone charging ≈ 1,645Wh), but the Apex 300 + B300K finishes with significantly more margin. That matters if conditions aren't ideal or the outage runs long. 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 F3800 the only portable option?
Neither is "portable" in any hiking sense. The SOLIX F3800 (132.3 lbs) and the Apex 300 + B300K (148.8 lbs) are both appliances you place and leave. The 16.5-lb difference matters when loading into a vehicle or moving between rooms, but that's about it. If true portability is your priority, look at units under 20 lbs in a different class entirely.
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 F3800 or the Apex 300 + B300K?
We'd buy the Apex 300 + B300K. Cheaper and more capable. That combination is rare. The SOLIX F3800 doesn't offer a compelling reason to spend more unless you specifically need a feature unique to the Anker ecosystem (expansion batteries, app integrations). Otherwise, clear call.
Still Deciding?
These expert guides cover the best picks for your use case — with calculators, comparison tables, and recommendations.
Budget Picks Under $500
Best value per watt-hour for casual use
Read GuideBest for RV
Off-grid power stations with solar input & expansion
Read GuideEmergency Prep Guide
Blackout-tested picks with runtime calculator
Read GuideSolar Generators
Ranked by solar charge speed — panels + station bundles
Read GuideFull Comparison Tool
Compare SOLIX F3800 vs Apex 300 + B300K side-by-side with every spec
Open ToolReady to Decide?
View current pricing from authorized retailers.
Prices may vary by retailer and are subject to change.