Head-to-head test
BLUETTI AC240P vs BLUETTI EP500Pro
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
EP500Pro
5,376Power Score · The AC & Fridge Zone
$3,499.00 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 EP500Pro (5,120Wh, 3,000W) come from different product lines with different engineering priorities and a $2,037 price gap. The EP500Pro 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 EP500Pro's 3,000W 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 EP500Pro keeps a fridge alive for roughly 29 hours vs the AC240P's 10 hours. The cost? Portability. At 187 lbs, the EP500Pro 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 EP500Pro 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 EP500Pro costs ~$0.2/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.
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 $2,037 less
- +Lighter by 115 lb
- +Longer warranty
Trade-offs
- –Weaker inverter (-600W) limits appliance compatibility.
BLUETTI EP500Pro
With a massive 3,000W output (and 6,000W surge), the EP500Pro can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 187 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 (+$2,037) than the AC240P.
- –Significantly heavier (+115 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
EP500Pro
The AC240P runs out of juice. It only has 1,567Wh usable, but this scenario needs 2,100Wh. The EP500Pro covers it and still has 150h 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
EP500Pro
The AC240P runs out of juice. It only has 1,567Wh usable, but this scenario needs 1,645Wh. The EP500Pro covers it and still has 180h 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
EP500Pro
Both are massively overpowered for CPAP. You're using 20% or less. Save $2,037 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.
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
EP500Pro
The EP500Pro gives you a comfortable buffer at 21%. 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
EP500Pro
Both handle it, but neither is stressed. Tailgating is a light load. The EP500Pro's extra margin is nice but not decisive here. Consider weight instead: you're carrying this to a parking lot, and 115 lbs makes a real difference when loading up.
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: EP500Pro runs 21.2h vs 7.6h.
$3,499 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 0–290.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–58hHigh-Draw Appliances
These reveal the real limitsscale 0–4.4h¹ 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 EP500Pro, on Power Score margin
These two units are closely matched on individual specs, but our Power Score analysis gives the EP500Pro the edge with a composite score of 5,376 vs 3,528.
Overall score margin: 3,528 vs 5,376 (−52.4%)
List prices as of July 10, 2026. The links below open BLUETTI's current price.
$3,499.00 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): Tailgating.
Full specifications
| Specification | AC240P | EP500Pro★ Our pick |
|---|---|---|
| Price | $1,461.99 Check latest price | $3,499.00 Check latest price |
| Capacity (Wh) | 1843 | 5120 |
| Output (W) | 2400 | 3000 |
| Surge Peak | 3600W | 6000W |
| AC Outlets | 3 | 5 |
| USB-C Charging Outputs | 100W | 100W |
| Solar Input (W) | 1200 | 2400 |
| Weight (lbs) | 72 | 187 |
| UPS | Yes (<15ms) | Yes (20ms) |
| Charging Cycles | 3500 | 3500 |
| Chemistry | LiFePO4 | LiFePO4 |
| Warranty (Years) | 6 | Not Specified |
| Battery Expansion Feasibility | Yes | No |
| App Control | Yes | Yes |
| $/Watt Hour | $.79 | $.68 |
| Noise Level (db) | 45 | Not Specified |
| Solar Input Type | Standard | MPPT (12-150V) |
| USB-A Ports | 2 | 2 |
| USB-C Ports | 2 | 2 |
| Cost per Whᵈ | $0.79/Wh | $0.68/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.
Weight Reality Check
Neither unit is grab-and-go. The AC240P (72 lbs) is manageable solo but heavier than a large checked suitcase. The EP500Pro (187 lbs) is firmly a two-person lift. It goes where you put it and stays there. That's a 115 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.
EP500Pro: Fixed Capacity
The EP500Pro is sealed at 5,120Wh — a complete unit, and already larger than the AC240P's 1,843Wh. The AC240P can add expansion batteries, but that only pulls ahead if you'd grow past 5,120Wh.
Surge Power: Inverter Quality Indicator
The EP500Pro 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: standby (<20ms) vs standby (<20ms)
The AC240P switches to battery in 15ms (standby (<20ms)), while the EP500Pro 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.
EP500Pro: Noise Level Not Disclosed
The AC240P publishes its noise level (45dB), but the EP500Pro 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 EP500Pro.
Check EP500Pro 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.
| Metric | AC240P | EP500Pro |
|---|---|---|
| Purchase price | $1,461.99 | $3,499.00 |
| Lifetime energy delivery | 6,451 kWh | 17,920 kWh |
| Cost per lifetime kWh | $0.23 | $0.20 |
| Cost per warranty year | $244/yr | $∞/yr |
| Battery lifespan | 9.6yr daily · 33.7yr weekends · 67.3yr weekly | 9.6yr daily · 33.7yr weekends · 67.3yr weekly |
Analyst note
The AC240P is cheaper to buy, but the EP500Pro is cheaper to own. At $0.2/kWh over its lifetime vs $0.23/kWh, the EP500Pro'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.
EP500Pro
FIXED CAPACITYFixed at 5,120Wh — a sealed, complete system. No expansion port, but that capacity already covers heavy and multi-day loads.
Accepts up to 2,400W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Don't read the AC240P's expandability as a straight win here: it starts at 1,843Wh, below the EP500Pro's 5,120Wh, so a first expansion battery largely buys back capacity the EP500Pro already includes. It only pulls ahead if you'd grow past 5,120Wh — short of that, the EP500Pro's larger fixed capacity is the simpler value.
The Bottom Line
The full picture comes down to this. The EP500Pro 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 EP500Pro 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 EP500Pro worth $2,037 more than the AC240P?
The short answer: yes, if you'll actually use the extra capability. The EP500Pro costs $2,037 more, but that premium buys you 3,277Wh more battery capacity (that's 19 extra hours of running a mini-fridge); 600W 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 $0.68/Wh vs $0.79/Wh. Factor in cycle life and the math flips: the EP500Pro 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 3,277Wh capacity difference actually affect daily use?
The EP500Pro's 5,120Wh battery keeps a mini-fridge running for roughly 29 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 EP500Pro 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 EP500Pro'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 EP500Pro, or is the AC240P the only portable option?
Neither is "portable" in any hiking sense. The AC240P (72 lbs) and the EP500Pro (187 lbs) are both appliances you place and leave. The 115-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 EP500Pro 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 3.0 hours for the EP500Pro and 2.2 hours for the AC240P. That gap widens on cloudy days, when the EP500Pro'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 EP500Pro's advantage is substantial.
Does the AC240P's expandability make it the safer long-term buy?
Not necessarily. The AC240P can add BLUETTI batteries, but it starts at 1,843Wh — below the EP500Pro's sealed 5,120Wh. A first expansion battery mostly buys back capacity the EP500Pro already gives you out of the box; expandability only pulls ahead if you expect to grow past 5,120Wh. If you don't, the EP500Pro's larger fixed capacity is the simpler, complete package — not a dead end, just already the bigger battery.
Bottom line: should I buy the AC240P or the EP500Pro?
We'd pay the premium for the EP500Pro. 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 EP500Pro 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 EP500ProPick
$3,499.00
$3,499.00 list · direct from BLUETTI
Prices may vary by retailer and are subject to change.