BLUETTI AC240P vs BLUETTI Apex 300 + B500K
Both carry the BLUETTI name, but they're built for different buyers. The AC240P (1,843Wh, 2,400W) and the Apex 300 + B500K (7,885Wh, 3,840W) come from different product lines with different engineering priorities and a $1,260 price gap. The Apex 300 + B500K 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 + B500K's 3,840W inverter can run a window AC unit, a full-size fridge, or power tools. The AC240P's 2,400W inverter will flat-out refuse to start those appliances. On stamina, the Apex 300 + B500K keeps a fridge alive for roughly 45 hours vs the AC240P's 10 hours. The cost? Portability. At 183 lbs, the Apex 300 + B500K is a two-person lift you set down once and leave. The AC240P at 72 lbs is more manageable, though still not light.
Pick the Apex 300 + B500K if your primary use is weekend camping or 8-hour blackout. Go with the AC240P if you need the heavier-duty specs for demanding loads. Most buyers overlook this: the Apex 300 + B500K costs ~$0.12/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.
AC240P Analysis
With a massive 2,400W output (and 3,600W surge), the AC240P can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 72 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion.
Strengths
- Save $1,260 vs Competitor
- 111 lbs Lighter
- Longer Warranty Coverage
Trade-offs & Considerations
- Weaker inverter (-1,440W) limits appliance compatibility.
Apex 300 + B500K Analysis
With a massive 3,840W output (and 7,680W surge), the Apex 300 + B500K can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 183 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 $0.41 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 (+$1,260) than the AC240P.
- Significantly heavier (+111 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.
Weight Reality Check
Watch outNeither unit is grab-and-go. The AC240P (72 lbs) is manageable solo but heavier than a large checked suitcase. The Apex 300 + B500K (183 lbs) is firmly a two-person lift. It goes where you put it and stays there. That's a 111 lb difference, which you'll feel every time you relocate.
Fan Noise Under Load
NoteThe AC240P runs at 45dB (like a running refrigerator), while the Apex 300 + B500K hits 45dB (like a running refrigerator). Most people find anything above 45dB disruptive for sleep. Worth considering if you're running a CPAP or camping in a tent nearby.
Surge Power: Inverter Quality Indicator
AdvantageThe Apex 300 + B500K has a 2× surge-to-continuous ratio vs the AC240P'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 AC240P may trip when starting these appliances even though its continuous wattage looks sufficient.
UPS Speed: line-interactive (<10ms) vs standby (<20ms)
NoteThe Apex 300 + B500K switches to battery in 10ms (line-interactive (<10ms)), while the AC240P takes 15ms (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.
Warranty Value Comparison
NoteThe AC240P gives you 3.1 years of warranty per $1,000 spent, vs the Apex 300 + B500K's 1.6 years. That's 2× 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 AC240P runs out of juice. It only has 1,567Wh usable, but this scenario needs 2,100Wh. The Apex 300 + B500K covers it and still has 307h of phone charging left over.
8-Hour Blackout
8 hours
Keep the essentials running through a night without power
The AC240P runs out of juice. It only has 1,567Wh usable, but this scenario needs 1,645Wh. The Apex 300 + B500K covers it and still has 337h of phone charging left over.
CPAP Overnight
8 hours
Sleep therapy without interruption — the #1 medical use case
Both are massively overpowered for CPAP. You're using 20% or less. Save $1,260 and buy the cheaper unit; the extra capacity is wasted on a 40W medical device. Instead, invest in a second battery for multi-night camping trips.
Remote Workday
8 hours
Full work day off-grid without power anxiety
The Apex 300 + B500K gives you a comfortable buffer at 14%. Enough to work late, join extra video calls, or charge a second device without worry. The AC240P at 58% works but leaves less room for the unexpected. For daily remote work, that peace of mind matters.
Tailgate Party
4 hours
Game day power for the crew
Both handle it, but neither is stressed. Tailgating is a light load. The Apex 300 + B500K's extra margin is nice but not decisive here. Consider weight instead: you're carrying this to a parking lot, and 111 lbs makes a real difference when loading up.
Van Life Daily
24 hours
A full day of mobile living — the ultimate endurance test
The AC240P runs out of juice. It only has 1,567Wh usable, but this scenario needs 4,685Wh. The Apex 300 + B500K covers it and still has 134h 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 | AC240P | Apex 300 + B500K |
|---|---|---|
😴 CPAP Machine 40W draw | 39.2h4 full nights | ★167.6h20 full nights |
📱 Phone Charger 15W draw | 104.4h | ★446.8h |
📡 Router + Modem 20W draw | 78.3h | ★335.1h |
💡 LED Lights (4 bulbs) 40W draw | 39.2h | ★167.6h |
💻 Laptop (Working) 60W draw | 26.1h | ★111.7h |
Comfort & Convenience
Makes off-grid life actually enjoyable| Appliance | AC240P | Apex 300 + B500K |
|---|---|---|
🌀 Box Fan 75W draw | 20.9h | ★89.4h |
📺 LED TV (55") 80W draw | 19.6h | ★83.8h |
🧊 Mini-Fridge 150W draw | 10.4h | ★44.7h |
🛏️ Electric Blanket 200W draw | 7.8h0 full nights | ★33.5h4 full nights |
High-Draw Appliances
These reveal the real limits| Appliance | AC240P | Apex 300 + B500K |
|---|---|---|
☕ Coffee Maker 1000W draw | 1.6h | ★6.7h |
🍽️ Microwave 1200W draw | 1.3h | ★5.6h |
🔥 Space Heater 1500W draw | 1h | ★4.5h |
Runtime = (capacity × 0.85) ÷ appliance watts. Actual runtime varies with battery age, temperature, and simultaneous loads.
Expert Verdict
Apex 300 + B500K Edges Ahead on Power Score
These two units are closely matched on individual specs, but our Power Score analysis gives the Apex 300 + B500K the edge with a composite score of 7,794 vs 3,388.
Based on 18+ spec comparisons and real-world performance data
Power Score Breakdown
How each unit performs across our segmented benchmarks
| Benchmark | AC240P | Apex 300 + B500K |
|---|---|---|
| Overall Power Score | 3,388Appliance Class | ★7,794The AC & Fridge Zone |
| UPSResponse & Reliability | 3,029 | ★5,666 |
| RV LivingEnergy Density & Output | 3,444 | ★7,731 |
| Home BackupCapacity & Resilience | 3,458 | ★7,871 |
| CPAPSleep Therapy Reliability | 2,772 | ★5,193 |
| Solar GeneratorSolar Input & Efficiency | 3,321 | ★7,048 |
| TailgatingOutlets & Portability | 2,803 | — |
| Food TruckSustained Heavy Output | 3,449 | ★7,074 |
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 | AC240P | Apex 300 + B500K |
|---|---|---|
| Price | ★$1,939.00 | $3,199.00 |
| Capacity (Wh) | 1843 | ★7884.8 |
| Output (W) | 2400 | ★3840 |
| Surge Peak | 3600W | ★7680W |
| AC Outlets | 3 | ★6 |
| USB-C Charging Outputs | 100W | 100W |
| Solar Input (W) | 1200 | ★2400 |
| Weight (lbs) | ★72 | 183 |
| UPS | ★Yes (<15ms) | Yes (<10ms) |
| Charging Cycles | 3500 | 3500+ |
| Warranty (Years) | ★6 | 5 |
| Battery Expansion Feasibility | Yes | Yes |
| App Control | Yes | Yes |
| $/Watt Hour | $1.05 | ★$.41 |
| Noise Level (db) | 45 | 45 |
| Solar Input Type | Standard | MC4 |
| USB-A Ports | 2 | 2 |
| USB-C Ports | 2 | 2 |
| Cost per Wh (calculated) | $1.05/Wh | ★$0.41/Wh |
Beyond the Specs: Owning It
What happens after you click “Buy” — reliability, brand trust, growth potential, and true cost of ownership.
Lifetime Value
AC240P
Battery lifespan: 9.6yr daily · 33.7yr weekends · 67.3yr weekly
Apex 300 + B500K
Battery lifespan: 9.6yr daily · 33.7yr weekends · 67.3yr weekly
The AC240P is cheaper to buy, but the Apex 300 + B500K is cheaper to own. At $0.12/kWh over its lifetime vs $0.3/kWh, the Apex 300 + B500K's higher cycle life and capacity make each dollar go further over the years.
Growth Path
AC240P
✓ ExpandableSupports expansion batteries from BLUETTI. You can increase capacity without replacing the base unit. A significant long-term advantage.
Accepts up to 1,200W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are BLUETTI-specific. You're investing in the BLUETTI ecosystem.
Apex 300 + B500K
✓ 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.
Both units support expansion, but the Apex 300 + B500K's higher solar ceiling (2,400W vs 1,200W) gives it a stronger off-grid growth path. More solar input means you can add panels as your setup grows.
The Bottom Line
The full picture comes down to this. The Apex 300 + B500K 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 AC240P wins in the scenarios that match your life, it's the right choice regardless of aggregate scores.
If neither the AC240P nor the Apex 300 + B500K 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 BLUETTI discount regularly, so check the current price before committing. Prime Day and Black Friday pricing typically drops 20-30%.
Frequently Asked Questions
AC240P vs Apex 300 + B500K — answered by our testing team.
Q.Is the Apex 300 + B500K worth $1,260 more than the AC240P?
The short answer: yes, if you'll actually use the extra capability. The Apex 300 + B500K costs $1,260 more, but that premium buys you 6,041.8Wh more battery capacity (that's 34 extra hours of running a mini-fridge); 1,440W higher AC output (opening the door to more demanding appliances); 1,200W faster solar charging for quicker off-grid recovery. On a cost-per-watt-hour basis, you're paying $0.41/Wh vs $1.05/Wh. Factor in cycle life and the math flips: the Apex 300 + B500K costs $0.12/kWh over its lifetime vs $0.30/kWh. The "expensive" unit is actually cheaper to own. For regular use, we'd pay the premium.
Q.How does the 6,041.8Wh capacity difference actually affect daily use?
The Apex 300 + B500K's 7,884.8Wh battery keeps a mini-fridge running for roughly 45 hours vs the AC240P's 10 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 + B500K handles it while the AC240P 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 + B500K'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 + B500K, or is the AC240P the only portable option?
Neither is "portable" in any hiking sense. The AC240P (72 lbs) and the Apex 300 + B500K (183 lbs) are both appliances you place and leave. The 111-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.How fast can each unit recharge from solar panels in real conditions?
On paper, the Apex 300 + B500K accepts 2,400W vs the AC240P's 1,200W 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 4.7 hours for the Apex 300 + B500K and 2.2 hours for the AC240P. That gap widens on cloudy days, when the Apex 300 + B500K'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 + B500K's advantage is substantial.
Q.Bottom line: should I buy the AC240P or the Apex 300 + B500K?
We'd pay the premium for the Apex 300 + B500K. 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 AC240P is still solid if budget is the priority, but the Apex 300 + B500K 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.
Emergency Prep Guide
Blackout-tested picks with runtime calculator
Read GuideBudget Picks Under $500
Best value per watt-hour for casual use
Read GuideBest for RV
Off-grid power stations with solar input & expansion
Read GuideFull Comparison Tool
Compare AC240P vs Apex 300 + B500K side-by-side with every spec
Open ToolReady to Decide?
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