Head-to-head test
BLUETTI AC240P vs BLUETTI EP800 + 2×B500
Real-world runtimes, scenario verdicts, and ownership costs compared — which wins for your use case.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
BLUETTI
AC240P
3,528Power Score · Appliance Class
$1,461.99 list · direct from BLUETTI
BLUETTI
EP800 + 2×B500
10,261Power Score · Whole-Home Capable
$6,999.00 list · direct from BLUETTI
Spec deltas
Both carry the BLUETTI name, but they're built for different buyers. The AC240P (1,843Wh, 2,400W) and the EP800 + 2×B500 (9,920Wh, 7,600W) come from different product lines with different engineering priorities and a $5,537 price gap. The EP800 + 2×B500 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 EP800 + 2×B500's 7,600W inverter has the headroom for a window AC, a full-size fridge, and power tools. The AC240P's 2,400W inverter still runs most single appliances; the EP800 + 2×B500's real edge is surge headroom for the biggest motor starts and stacking several heavy loads at once. On stamina, the EP800 + 2×B500 keeps a fridge alive for roughly 56 hours vs the AC240P's 10 hours. The cost? Portability. At 360.6 lbs, the EP800 + 2×B500 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 EP800 + 2×B500 if your primary use is weekend camping or 8-hour blackout. Go with the AC240P if you want the option to add expansion batteries later. Most buyers stop at the sticker price and miss this: over a full lifespan the EP800 + 2×B500 works out to about $0.2/kWh against the AC240P's $0.23, a gap that compounds in the EP800 + 2×B500's favor the more you cycle it. 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.
BLUETTI AC240P
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
- +Costs $5,537 less
- +Lighter by 288.6 lb
- +Longer warranty
Trade-offs
- –Weaker inverter (-5,200W) limits appliance compatibility.
BLUETTI EP800 + 2×B500
With a massive 7,600W output (and 0W surge), the EP800 + 2×B500 can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 360.6 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion.
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$5,537) than the AC240P.
- –Significantly heavier (+288.6 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
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
EP800 + 2×B500
The AC240P runs out of juice. It only has 1,567Wh usable, but this scenario needs 2,100Wh. The EP800 + 2×B500 covers it and still has 422h of phone charging left over.
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
EP800 + 2×B500
The AC240P runs out of juice. It only has 1,567Wh usable, but this scenario needs 1,645Wh. The EP800 + 2×B500 covers it and still has 452h of phone charging left over.
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
EP800 + 2×B500
Both are massively overpowered for CPAP — the EP800 + 2×B500 finishes at 4% used against the AC240P's 20%. At a 40W load that reserve is comfort rather than necessity, so if a CPAP is the only thing you plan to run, price and portability should count for more than capacity does.
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
EP800 + 2×B500
The EP800 + 2×B500 gives you a comfortable buffer at 11%. 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.
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
EP800 + 2×B500
Both handle game day, and the EP800 + 2×B500 does it with more in reserve — 8% used against 43%. Tailgating is a light load, so that headroom counts for less here than the 289 lbs you'll actually carry across the parking lot.
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
EP800 + 2×B500
The AC240P runs out of juice. It only has 1,567Wh usable, but this scenario needs 4,685Wh. The EP800 + 2×B500 covers it and still has 250h of phone charging left over.
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: EP800 + 2×B500 runs 41.1h vs 7.6h.
$6,999 list · direct from BLUETTI
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 0–562.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–112.4hHigh-Draw Appliances
These reveal the real limitsscale 0–8.4h¹ 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 EP800 + 2×B500, on Power Score margin
These two units are closely matched on individual specs, but our Power Score analysis gives the EP800 + 2×B500 the edge with a composite score of 10,261 vs 3,528.
Overall score margin: 3,528 vs 10,261 (−190.8%)
List prices as of July 10, 2026. The links below open BLUETTI's current price.
$6,999.00 list · direct from BLUETTI
or check the AC240P price$1,461.99 list
Written by Gunner Gustafson, Whole-Home Backup 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, RV Living, Solar Generator, Tailgating.
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.
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, AC240P rates 4.2/5 (52nd percentile of 24 Everyday-class units), and EP800 + 2×B500 rates 3.8/5 (31st percentile of 17 Whole-Home / Off-Grid-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.
Weight Reality Check
Neither unit is grab-and-go. The AC240P (72 lbs) is manageable solo but heavier than a large checked suitcase. The EP800 + 2×B500 (360.6 lbs) is firmly a two-person lift. It goes where you put it and stays there. That's a 289 lb difference, which you'll feel every time you relocate.
AC240P: 45dB Under Load
45dB 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.
UPS Speed: standby (<20ms) vs standby (<20ms)
The AC240P switches to battery in 15ms (standby (<20ms)), while the EP800 + 2×B500 takes 20ms (standby (<20ms)). Most electronics handle this fine, but sensitive server equipment may hiccup. This matters if you're using it as a home UPS for always-on equipment.
EP800 + 2×B500: Noise Level Not Disclosed
The AC240P publishes its noise level (45dB), but the EP800 + 2×B500 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 EP800 + 2×B500.
Check EP800 + 2×B500 price →or check the AC240P 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 AC240P is cheaper to buy, but the EP800 + 2×B500 is cheaper to own. At $0.2/kWh over its lifetime vs $0.23/kWh, the EP800 + 2×B500's higher cycle life and capacity make each dollar go further over the years.
Growth path
AC240P
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,843Wh.
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.
EP800 + 2×B500
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 9,920Wh.
Accepts up to 9,000W of solar. Enough for a serious multi-panel array.
Limited ports. You'll likely need a power strip or splitter.
Expansion batteries are BLUETTI-specific. You're investing in the BLUETTI ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, but the EP800 + 2×B500's higher solar ceiling (9,000W vs 1,200W) gives it the stronger off-grid growth path — more panels can feed a bigger bank as it grows.
The Bottom Line
The full picture comes down to this. The EP800 + 2×B500 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 EP800 + 2×B500 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
Answers drawn from the spec record and cited owner research.
Is the EP800 + 2×B500 worth $5,537 more than the AC240P?
The short answer: yes, if you'll actually use the extra capability. The EP800 + 2×B500 costs $5,537 more, but that premium buys you 8,077Wh more battery capacity (that's 46 extra hours of running a mini-fridge); 5,200W higher AC output (opening the door to more demanding appliances); 7,800W faster solar charging for quicker off-grid recovery. On a cost-per-watt-hour basis, you're paying $0.71/Wh vs $0.79/Wh. Factor in cycle life and the math flips: the EP800 + 2×B500 costs $0.20/kWh over its lifetime vs $0.23/kWh. The "expensive" unit is actually cheaper to own. For regular use, we'd pay the premium.
How does the 8,077Wh capacity difference actually affect daily use?
The EP800 + 2×B500's 9,920Wh battery keeps a mini-fridge running for roughly 56 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 EP800 + 2×B500 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 EP800 + 2×B500'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.
Can I actually carry the EP800 + 2×B500, or is the AC240P the only portable option?
Neither is "portable" in any hiking sense. The AC240P (72 lbs) and the EP800 + 2×B500 (360.6 lbs) are both appliances you place and leave. The 288.6-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.
How fast can each unit recharge from solar panels in real conditions?
On paper, the EP800 + 2×B500 accepts 9,000W 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 1.6 hours for the EP800 + 2×B500 and 2.2 hours for the AC240P. That gap widens on cloudy days, when the EP800 + 2×B500'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 EP800 + 2×B500's advantage is substantial.
Bottom line: should I buy the AC240P or the EP800 + 2×B500?
We'd pay the premium for the EP800 + 2×B500. 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 EP800 + 2×B500 will leave you less likely to wish you'd "gone bigger" six months from now. That regret costs more than the price difference.
Where to buy
BLUETTI AC240P
$1,461.99
$1,461.99 list · direct from BLUETTI
BLUETTI EP800 + 2×B500Pick
$6,999.00
$6,999.00 list · direct from BLUETTI
Prices may vary by retailer and are subject to change.