Head-to-head test
EcoFlow DELTA Pro 3 vs BLUETTI Apex 300
Over their rated lives these two deliver about the same energy, and the Apex 300 does it for $1,100 less. The DELTA Pro 3 holds half again as much per charge and keeps its USB and 12V ports on the box.
Full profiles: EcoFlow DELTA Pro 3 → · BLUETTI Apex 300 →
Looking for a different matchup? EcoFlow DELTA Pro vs BLUETTI Apex 300
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
In my canyon the grid goes down with the first big storm of the winter and stays down while the crews work their way up the hill. The second night is the one I plan for. That is the DELTA Pro 3’s whole case: 4,096Wh per charge to the Apex 300’s 2,764.8Wh, which after a modeled 8-hour blackout leaves more than a second night in hand. The Apex finishes the same night with less than half of one.
The Apex’s case is money, and it is a big number. It costs $1,100 less. Its cells are rated for 6,000 cycles to the DELTA Pro 3’s 4,000, and each cycle is smaller, so over a full rated life the two deliver about the same total energy. Per lifetime kilowatt-hour the Apex costs $0.10 and the DELTA Pro 3 $0.17.
I check every big unit against my deep-well pump, because a motor asks for a burst above its running draw as it starts. Neither maker gives me a number to check first. BLUETTI publishes no surge figure for the Apex, and the 6,000W EcoFlow lists for the DELTA Pro 3 is X-Boost, a mode, not a surge rating. So that line settles nothing here, and the rest of the sheet says buy the Apex.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
rated cycles
So the price gap is pure. You’re paying $1,100 more for the same lifetime of electricity, delivered in bigger pieces.
Apex 300: 2,764.8Wh, rated for 6,000 cyclesDELTA Pro 3: 4,096Wh, rated for 4,000 cycleslifetime energy about 16,589 kWh against 16,384 kWh; the Apex costs $1,100 less
Why it mattersIf you’ll cycle it hard for years, the Apex is the better deal by a wide margin.
That reserve covers the outage that runs a day longer than the utility said. It is the one thing on this page the saving can’t buy back without an expansion battery.
8-Hour Blackout needs 1,645Wh: DELTA Pro 3 finishes with 1,837Wh left, Apex 300 with 705WhRemote Workday: DELTA Pro 3 uses 26%, Apex 300 uses 39%
Why it mattersIf your outages run past one evening and you don’t have panels to refill between them, the DELTA Pro 3’s extra battery is what you’re paying for.
For a unit wired to a transfer switch that is a footnote. For one that also has to charge the radios on the kitchen table during the outage, it is a second purchase.
DELTA Pro 3: four USB-A ports, two USB-C at 100W and a 12V socket on the boxApex 300: no USB or 12V ports on the face; reviewers point to the separate Hub D1B7B11
Why it mattersPrice the hub into the Apex if the ports matter to you. It still lands well under the DELTA Pro 3.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: The DELTA Pro 3 wins the blackout and workday rows on reserve; the Apex wins the trips because the DELTA Pro 3 doesn’t travel.
The DELTA Pro 3 takes the blackout and workday rows on reserve. The Apex finishes both too, with less to spare.
The Apex takes the camping and tailgate rows because at 113.5 lbs the DELTA Pro 3 rolls off a truck bed if it travels at all. A CPAP night uses a small slice of either. A van-life day asks more than either holds on one charge.
Portability & Form Factor
Selected because: The DELTA Pro 3 is about 30 lbs heavier, a two-person lift that stays where you put it.
weight
At 83.78 lbs the Apex is a braced, two-hand lift, and one reviewer could barely carry it a few feetB8. The DELTA Pro 3 at 113.5 lbs is a two-person lift.
If it’s going to live in a garage on a transfer switch, the extra 30 lbs gets lifted once. If you’ll be hauling it out every storm, the Apex is the kinder one to your back.
Lifetime Value
Selected because: Same lifetime energy, very different price, so the Apex is much cheaper per kWh.
cost / lifetime kWh
The DELTA Pro 3 holds more per charge. The Apex is rated for more charges. Multiply them and they land within a couple of hundred kilowatt-hours of each other, which leaves the price. Per lifetime kWh, the Apex is $0.10 against $0.17. If you’ll cycle it hard for years, it is the better deal.
Both list a 5-year warranty, the Apex’s when bought direct from BLUETTI or registered.
What the Specs Don't Tell You
Selected because: Neither publishes a surge rating for motors, the noise ratings don’t compare, and the ports live in different places.
rated cycles
Surge is the burst a motor draws for a second as it starts, above its running watts. Neither maker publishes one here. BLUETTI lists none for the Apex above its 3,840W continuous rating, and its 7,680W Power Lifting figure is for heaters and kettles, which it runs above the rating by feeding them less. The 6,000W X-Boost figure EcoFlow lists for the DELTA Pro 3 is that same trick under another name, not a surge rating. If I wanted to know whether either starts my well pump, I’d have to plug it in and watch.
Noise can’t settle this, because each maker measures its own way. One reviewer calls the Apex’s fans relatively tameB5. The ports are the plainer difference. The DELTA Pro 3 has USB-A, USB-C and 12V on the box; the Apex has AC only until you add a hubB7.
Strengths & trade-offs
EcoFlow DELTA Pro 3
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$1,100) than the Apex 300.
- –Significantly heavier (+29.7 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
- –Shorter-lived battery — rated for 4,000 charge cycles vs the Apex 300's 6,000, so it wears out sooner.
BLUETTI Apex 300
Strengths
- +Costs $1,100 less
- +Lighter by 29.7 lb
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –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
Apex 300
The DELTA Pro 3 at 113.5 lbs is not a take-along — it rolls off a truck bed if it travels at all, so this scenario belongs to the Apex 300 by default — and it earns it, covering the 2,100Wh with 250Wh to spare. Capacity was never the DELTA Pro 3's problem here; getting to a campsite was.
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
DELTA Pro 3
Both survive the night. The DELTA Pro 3 finishes at 47% used with 1,837Wh left — 1.1 more nights like it. The Apex 300 finishes at 70% with 705Wh, 43% of a second night. If your outages tend to run past one evening, that difference is the whole argument between them.
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
Either unit
A CPAP is about 40W for eight hours, so both of these cover the night several times over — capacity isn't the question here. The only published difference is fan noise, and it can't settle this: the DELTA Pro 3 is rated 30dB and the Apex 300 45dB, but they are two makers' figures, each measured its own way. Neither settles which box is quieter at a bedside. Buy whichever is cheaper or easier to carry.
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
DELTA Pro 3
The DELTA Pro 3 clears the workday at 26% used, banking 2,572Wh — late work, extra calls, or a second laptop charge without arithmetic. The Apex 300 at 39% also finishes, with 1,440Wh of slack for the unplanned.
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
Apex 300
The DELTA Pro 3 at 113.5 lbs is not a take-along — it rolls off a truck bed if it travels at all, so this scenario belongs to the Apex 300 by default — and it earns it, covering the 670Wh with 1,680Wh to spare. Capacity was never the DELTA Pro 3's problem here; getting to a tailgate was.
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 covers this scenario's 4,685Wh: the DELTA Pro 3 comes up 1,203Wh short (about 74% covered), the Apex 300 2,335Wh (50%). Either gets you most of the way, so this is a scenario you plan around rather than one you should rule them out for.
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 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: DELTA Pro 3 runs 17h vs 11.5h.
$2,799 list · direct from EcoFlow
Planning for more than this? Describe your whole setup and get it sized →
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 0–232.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–46.4hHigh-Draw Appliances
These reveal the real limitsscale 0–3.5h¹ 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
November 1, 2026
Verdict: the BLUETTI Apex 300
Buy the Apex 300. It costs $1,100 less, its cells are rated for 6,000 cycles to the DELTA Pro 3’s 4,000, and over a full rated life the two deliver about the same total energy, so it is far cheaper per kilowatt-hour. It is about 30 lbs lighter. Neither maker publishes a surge rating, the burst a motor draws as it starts, so neither unit can be checked against a pump or a compressor on paper; the 6,000W EcoFlow lists for the DELTA Pro 3 is X-Boost, a mode, not a surge rating. What the DELTA Pro 3 buys you is 1,331Wh more per charge, which after a modeled 8-hour blackout leaves more than a second night in hand where the Apex has less than half of one, plus USB and 12V ports on the box that the Apex needs a separate hub for. If your outages run long and you have no panels, that is worth the money. For a fridge, lights and the internet it isn’t.
Today the Apex 300 is $1,599, $100 under its typical $1,699. The verdict weighs typical prices, not today's. Prices checked 28 days ago.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of November 1, 2026. The links below open EcoFlow's and BLUETTI's current prices.
$1,599.00 · direct from BLUETTI
down from $1,699 · 6% below usual
Last checked 28 days ago. Prices move — check before you buy.
or check the DELTA Pro 3 price$2,799.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated November 1, 2026
Black Friday · 26 days out
Prices to beat:DELTA Pro 3 $2,399Apex 300 $1,499
The lowest we have recorded for each. A Black Friday price above it is a sale that unit has already had.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS.
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 — see Sources & Research Notes below.
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, DELTA Pro 3 rates 3.9/5 (37th percentile of 20 Home Backup-class units), and Apex 300 rates 4.9/5 (93rd percentile of 28 Large-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.
About 30 Pounds Apart
The DELTA Pro 3 weighs 113.5 lbs against the Apex 300’s 83.78 lbs, and it holds 1,331Wh more. The Apex is a braced two-hand lift. The DELTA Pro 3 is a two-person lift that stays where you put it.
Two Ratings, Measured Two Ways
BLUETTI rates the Apex 300 at 45dB, about a running refrigerator. EcoFlow rates the DELTA Pro 3 at 30dB. Each maker measures its own way, so the gap on paper isn’t one you can count on hearing. If it’s going near a bedroom, listen to it first.
Power Lifting and X-Boost Are for Heaters
The Apex 300’s Power Lifting mode runs a heater or kettle rated up to 7,680W from its 3,840W inverter by feeding it less power, so it heats more slowly. The 6,000W X-Boost figure EcoFlow lists for the DELTA Pro 3 is the same kind of mode. Neither is a surge rating, and neither maker publishes one, so neither unit can be checked against a pump or a compressor on paper.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The Apex 300's figure is a maximum rather than a guarantee — it depends on buying direct from BLUETTI or registering the unit, since reseller purchases carry a shorter term. Worth saying because the per-dollar framing can suggest otherwise: the Apex 300 works out at 2.9 years of cover per $1,000 spent against the DELTA Pro 3's 1.8, but that spread is the price gap, not the terms.
More Cycles, Smaller Cycles
The Apex 300 is rated for 6,000 cycles and the DELTA Pro 3 for 4,000. Cycled daily, that’s about 16 years against 11. Each Apex cycle is smaller, so over the rated life both deliver roughly the same total energy. At the limit either pack drops to about 80% capacity and keeps working.
Full record above — the Test Desk pick is the Apex 300.
Check Apex 300 price →or check the DELTA Pro 3 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 Apex 300 wins on both sticker price and long-term value. At $0.10/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Brand trust
EcoFlow
Ecosystem
Largest in portable power — 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels
Support
US-based phone/email/chat support (1-800-368-8604). Experiences are polarized — many report hassle-free prepaid-label replacements, but others report long waits and refurbished units sent for new claims. Pro tip: buying from Costco or Amazon gives you a stronger return safety net.
Community
Largest community in the space — Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
Fastest-charging technology (X-Stream), deepest product ecosystem, and most active innovation cadence. At the top of the range sit two whole-home paths: the TITAN line, one 5 kWh unit that grows to 30 kWh, and the DELTA Pro Ultra platform, which stacks batteries and inverters further — flagship paths, not line-wide features.
Worth knowing
Tested subscription paywalls for advanced app features in early 2025 before community backlash paused the plan. No parts or service offered out of warranty.
BLUETTI
Ecosystem
One of the broadest lineups — 15-20+ models from budget (AC2A) to flagship portable (Apex 300, 2764.8Wh). Includes specialized products: vehicle solar hubs, sodium-ion cold-weather units, and balcony storage systems.
Support
The most inconsistent support in the space. Heavily email-based with China timezone delays. Some users get smooth, efficient service; others report weeks of troubleshooting runarounds, being offered discounts on new units instead of repairs, and confusing third-party purchase claim processes. Buying direct from Bluetti's website tends to produce better support outcomes.
Community
Active and growing — Reddit r/bluetti has a dedicated community. Second-largest after EcoFlow in engagement.
App experience
Rated 4.5/5 iOS and Android — tied for best app experience in the category. V3.0 UI redesign was well-received.
Unique strength
Among the best capacity-to-price ratios available — several Elite and Apex units are the lowest $/Wh in the catalog. Widest product diversity including industry-firsts like sodium-ion cold-weather units and dual solar+alternator vehicle hubs. LFP across the rest of the range, though rated cycle life spans 2,500 (EB3A) to 6,000, and it varies WITHIN the Elite range rather than tracking it — the Elite 300 and Elite 200 V2 are rated 6,000 while the Elite 30 V2, Elite 10 Mini, Elite 320 and Elite 400 are rated 3,000+ and the Elite 100 V2 4,000+, so check the specific model. Dual-voltage (120V/240V) in flagships.
Worth knowing
Customer support inconsistency is the #1 risk factor. Older/discontinued units may become unrepairable — no spare parts policy for some models. Some reports of erratic communication from support agents.
Analyst note
EcoFlow positions itself as a mid-to-premium brand with stronger support infrastructure, while BLUETTI competes on value. The question is whether the EcoFlow ecosystem and support premium is worth it for your use case.
Growth path
DELTA Pro 3
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 4,096Wh.
Accepts up to 2,600W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
Apex 300
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 2,765Wh.
Accepts up to 2,400W 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, so neither locks you out of growth — decide on capacity, price, and the rest, not the expansion checkbox.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA Pro 3
Coverage of the DELTA Pro 3 comes from established review sites and retailer listings rather than long owner threadsA0. Reviewers call it a gold-standard whole-home backup unitA4, built around a 4,096Wh LFP pack with 4,000W of dual-voltage outputA1. Multi-charge input reaches 80% in about 50 minutesA3.
It weighs about 113.5 lbsA4. The battery carries an IP65 rating, meaning sealed against dust and water jetsA2.
“4,096Wh LFP battery with 4,000W continuous AC output (6,000W with X-Boost) and dual-voltage 120V/240V, expandable to 48kWh.”
Sources
ecoflow.com · amazon.com · homedepot.com · thepowerpick.com · outboundpower.com · techradar.com · thesolarlab.com
BLUETTI Apex 300
The Apex 300 is new enough that long-term owner data barely existsB0. Most of what’s out there is press reviews plus a handful of posts on BLUETTI’s own forum. One reviewer says its fans are relatively tame next to units that sound like small jet enginesB5. The same review found the handles make the weight manageableB6, and another could barely carry it a few feet or lift it onto a tableB8.
Firmware is the recurring irritant. Owners describe updates locking the unit in Backup mode, ending a charge with Error 004 or breaking a Home Assistant Bluetooth link, and one app that keeps offering an update already installedB1B2B3B4. Reviewers also flag that the Apex has no DC or USB ports on its faceB7. Getting them back means the separate Hub D1, which one reviewer called a steep price for what it addsB11.
“I was using Bluetti-bt until the latest Bluetti firmware update. I then started having disconnects.”
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Huge 4,096Wh LFP capacity, 4,000W dual-voltage output, very fast charging, and big expandability are the standout praise; it's heavy at ~113 lbs. [DELTA Pro 3 · 2 entries]
- Multiple owners report firmware updates causing app glitches, mode-lock issues, error codes, or Bluetooth/Home Assistant disconnects shortly after updating. [Apex 300 · 4 entries]
- Reviewers consistently flag the lack of built-in USB/DC ports as a design tradeoff requiring costly add-on accessories (Hub D1, Hub A1). [Apex 300 · 4 entries]
- The unit's extreme weight (~85 lbs) is repeatedly described as making it barely 'portable' and hard to carry alone. [Apex 300 · 2 entries]
- A1
“4,096Wh LFP battery with 4,000W continuous AC output (6,000W with X-Boost) and dual-voltage 120V/240V, expandable to 48kWh.”
ecoflow.com / amazon.com — DELTA Pro 3 · 2026 · [positive]
- A2
“LiFePO4 rated for 4,000+ cycles to 80% (10+ years), with an IP65 battery rating.”
homedepot.com / thepowerpick.com — DELTA Pro 3 review · 2026 · [positive]
- A3
“Multi-charge technology reaches 0-80% in about 50 minutes using up to 7,000W input, with a full charge in roughly 90 minutes; up to 2,600W solar.”
outboundpower.com / techradar.com — DELTA Pro 3 review · 2026 · [positive]
- A4
“Weighs about 113.5 lbs; reviewers call it a gold-standard whole-home backup unit for 2026.”
techradar.com / thesolarlab.com — DELTA Pro 3 review · 2026 · [positive]
- B1
“I updated my Apex 300 to the latest firmware yesterday. Now it's stuck in 'Backup' mode... Now when I go into the app to try to change it back, it flashes to...”
BLUETTI Community forum — 'Apex 300 stuck in Backup mode after last firmware update' · 2025-11 · [negative]
- B2
“When the system reached 97% charge, I decided to install the firmware updates. After the update completed, the charging stopped and I received Error 004.”
BLUETTI Community forum — 'Error E004 Apex 300' · 2025-11 · [negative]
- B3
“I was using Bluetti-bt until the latest Bluetti firmware update. I then started having disconnects.”
GitHub bluetti-official/bluetti-home-assistant issue #95 — 'APEX 300 and Hub A! now working' · 2026-05 · [mixed]
- B4
“Problem is every time I connect to the power station it shows that I still have an update, and I need to tap to upgrade which then tells me I am up to date.”
BLUETTI Community forum — 'Check For Update App issue' · 2025-09 · [negative]
- B5
“Some units sound like small jet engines under load, but the Apex 300's fans are relatively tame.”
Techspective — 'Bluetti Apex 300 with B300K Review' · 2025-09 · [positive]
- B6
“It's heavy, no question, but the handles and modular battery design make it manageable.”
Techspective — 'Bluetti Apex 300 with B300K Review' · 2025-09 · [mixed]
- B7
“Not having DC or USB ports on the face is a tradeoff. The Hub D1 solves the problem—but it's an additional $300 accessory that you then have to bolt on after the fact.”
Techspective — 'Bluetti Apex 300 with B300K Review' · 2025-09 · [negative]
- B8
“In fact, it's so heavy I can hardly carry it more than a few feet at a time and have been unable to lift it onto a table.”
T3 — 'Bluetti Apex 300 review: transform your off-grid life' · 2025-11 · [negative]
- B11
“That Bluetti D1 Power Hub that gives you your DC and USB ports costs about $300, which is a steep price for what you're getting.”
TheSolarLab — 'Bluetti Apex 300 Review: Cheap, Practical Home Backup?' · unknown · [negative]
Research compiled November 1, 2026.
What Owners Actually Report
Drawn from 73 comments on independent review channels — not from retailer reviews, which skew to the first week of ownership. Each line is our summary of one commenter's claim, linked to the original. We record what they said, including where it contradicts the spec sheet.
EcoFlow DELTA Pro 3
74 claims from 50 comments · 50 from owners · 22 with figures
- Charging
- 8 · 30% negative
- Runtime
- 7 · 0% negative
- Price & value
- 11 · 3% negative
- Expandability
- 7 · 97% negative
- Warranty & support
- 8 · 69% negative
What owners complain about
His DP3 can only charge from an external 120V source while outputting 240V.
Chargingowner7 agreedsource →
At almost 120 lb he would not call the DP3 portable.
Size & weightmeasuredowner3 agreedsource →
Regrets buying the DP3 over the F3800 because it lacks 240V passthrough.
Expandabilityowner4 agreedsource →
What owners praise
Recharges in about 70 minutes at 3400W from a 240V generator inlet.
Chargingmeasuredowner57 agreedsource →
Ran lights, fans, modem, fridge and a 1300W air conditioner through a 5-day hurricane outage.
Runtimemeasuredowner30 agreedsource →
Costco sells a DELTA Pro 3 twin pack at $4,999, dropping to $4,499 on sale.
Price & valuemeasuredowner6 agreedsource →
BLUETTI Apex 300
36 claims from 23 comments · 18 from owners · 6 with figures
- Price & value
- 10 · 8% negative
- Solar input
- 6 · 53% negative
- Inverter & surge
- 2 · 0% negative
- Build quality
- 2 · 0% negative
- Runtime
- 2 · 100% negative
What owners complain about
TV, router, Tablo and Firestick drain it from 100% in 7-9 hours; runtime figures are lies.
Runtimemeasuredownersource →
Dropping to a 60V PV max is a deal killer versus the 150V per string they run on the AC300.
Solar inputowner1 agreedsource →
App is portrait-only.
App & firmwareownersource →
What owners praise
Two paralleled units give 7,680W and run dryer, 2-ton AC or oven plus fridges and sump pump.
Inverter & surgemeasuredowner5 agreedsource →
$2,600 for two units plus $659 for the Hub A1 was worth the extra over the Anker.
Price & valuemeasuredowner5 agreedsource →
Three Apex 300s with a Hub A1 give him 18kW solar input and 12kW output.
Solar inputmeasuredownerafter 1 months10 agreedsource →
Claims are weighted by how specific they are, whether the commenter owns the unit, and how many readers agreed. Comments that mention a product under a rival's review count for more, because the commenter had no reason to be there. This is what buyers report, not our test results — for measurements we ran ourselves, see the methodology.
Who Should Buy Which
Buy the DELTA Pro 3 if you…
- →Your outages run past one night and you have no panels to refill between them. After a modeled 8-hour blackout the DELTA Pro 3 has more than a second night left.
- →You want USB-C, USB-A and 12V on the unit itself, and it will live in one spot near the panel.
- →You want the most capacity in one box before adding batteries: 4,096Wh to 2,764.8Wh.
Buy the Apex 300 if you…
- →You want the cheaper unit to buy and to run, at $1,100 less up front and $0.10 per lifetime kWh against $0.17.
- →Your loads are lights, a fridge, the router and electronics, all well inside 3,840W continuous.
- →You’ll move it around, and about 30 fewer pounds matters to you.
If neither fits
If your day looks like full-time van or off-grid living, around 4,685Wh, both base units come up short on one charge. Plan on expansion batteries from day one with either brand.
The Bottom Line
The Apex 300 costs $1,100 less, is rated for more cycles, and over its life delivers about as much energy as the DELTA Pro 3. Neither publishes the surge figure that would let a pump decide this. Buy the Apex.
The DELTA Pro 3 is the one for outages that run into a second night with no sun to refill, and for anyone who wants the USB and 12V ports on the box. If that is your house, it is worth the money. Otherwise keep it.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the BLUETTI Apex 300 actually cheaper to own than the EcoFlow DELTA Pro 3?
Yes. It costs $1,100 less up front and works out to $0.10 per lifetime kWh against $0.17 for the DELTA Pro 3. Its cells are rated for 6,000 cycles to 4,000, so over the rated life both deliver about the same total energy, roughly 16,589 kWh against 16,384 kWh.
Which of these two weighs more?
The DELTA Pro 3, at 113.5 lbs against the Apex 300’s 83.78 lbs. It holds 1,331Wh more for the extra weight. The Apex is a two-hand lift; the DELTA Pro 3 is a two-person lift.
Which one handles a fridge or AC startup better?
Neither maker publishes a surge rating, the short burst an inverter passes while a motor starts, so there is no figure to compare. BLUETTI lists none for the Apex 300 above its 3,840W continuous rating, and its 7,680W Power Lifting figure applies to resistive loads such as heaters. The 6,000W EcoFlow lists for the DELTA Pro 3 is X-Boost, a mode for the same kind of load, not a surge rating. Both run 4,000W or close to it continuously, far more than a household fridge draws even as it starts. For a well pump or a central AC compressor, check the motor’s label and ask the maker.
Which one is quieter?
The published figures can’t settle it. EcoFlow rates the DELTA Pro 3 at 30dB and BLUETTI rates the Apex 300 at 45dB, but each maker measures its own way. One reviewer calls the Apex’s fans relatively tame under load. If the unit will sit near a bedroom, listen to it running before you commit.
Which should I buy if I might need to expand later?
Either works. Both are expandable, so pick on today’s capacity, weight and price.
Brand matchup
EcoFlow vs BLUETTI: measured across every matchup →Related comparisons
Where to buy
EcoFlow DELTA Pro 3
$2,799.00
$2,799.00 · direct from EcoFlow
Last checked 28 days ago. Prices move — check before you buy.
BLUETTI Apex 300Pick
$1,599.00
$1,599.00 · direct from BLUETTI
down from $1,699 · 6% below usual
Last checked 28 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.