Head-to-head test
EcoFlow DELTA 3 Ultra Plus vs BLUETTI Apex 300
$300 cheaper, 95.8 lbs lighter, and 15dB quieter under load — the DELTA 3 Ultra Plus beats the Apex 300 everywhere except solar input ceiling.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
EcoFlow
DELTA 3 Ultra Plus
5,220Power Score · The AC & Fridge Zone
$1,499.00 list · direct from EcoFlow
BLUETTI
Apex 300
5,062Power Score · The AC & Fridge Zone
$1,699.00 list · direct from BLUETTI
Spec deltas
The EcoFlow DELTA 3 Ultra Plus costs $1,499; the BLUETTI Apex 300 costs $1,799 — a $300 gap before you even weigh either one off the truck.
Weight is where this stops being close. The Ultra Plus is 77.2 lbs, a lift most people manage solo out of a trunk. The Apex 300 is 173 lbs, and reviewers testing it report being unable to lift it onto a table aloneB8. That's not a heavier version of the same machine — it's a different category of object.
The Apex 300 does hold one real card: a 2,400W solar ceiling against the Ultra Plus's 1,600W, useful if you're feeding it from a serious panel array. For anyone not doing that, the Ultra Plus is the cheaper, lighter, quieter buy with no offsetting weakness.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
One reviewer testing the Apex 300 said it was so heavy they could hardly carry it more than a few feet at a time and never managed to lift it onto a table aloneB8 — a complaint the Ultra Plus's own reviewers, working with a much lighter unit, never raise even when calling its 74-ish lbs "thunderous"A9.
EcoFlow DELTA 3 Ultra Plus weighs 77.2 lbsBLUETTI Apex 300 weighs 173 lbs — 95.8 lbs more
Why it mattersAnyone setting this up solo — on a dock, up porch stairs, in an attic — should weigh the 95.8-lb gap as seriously as the price.
The Apex 300's one genuine edge is a higher solar ceiling, 2,400W against 1,600W, so the extra $300 buys faster off-grid recharging if you're feeding it from panels all day. Outside that specific use case, the money just bought more weight and a battery that costs more per kWh to run.
DELTA 3 Ultra Plus costs $1,499 with a computed $0.12 per lifetime kWhApex 300 costs $1,799 with a computed $0.19 per lifetime kWh
Why it mattersBuyers without a large solar array should keep the $300; buyers building one are the one group with a real reason to pay it.
Reviewers of the Ultra Plus consistently describe its fans as unobtrusive even at full inverter load, comparable to EcoFlow's flagship DELTA Pro UltraA1A2 — while Apex 300 testers can only manage "relatively tame" next to units that sound like small jet enginesB5, a much lower bar to clear.
Apex 300 rated 45dB under loadDELTA 3 Ultra Plus rated 30dB under load — 15dB quieter
Why it mattersAnyone recharging overnight near a tent, bedroom, or RV bunk should weigh the noise gap as seriously as the weight gap.
rated cycles
Both units carry the identical 5-year warranty, so those extra 500 cycles are real headroom past the warranty window — the stretch where a battery's age actually starts to show.
DELTA 3 Ultra Plus rated 4,000 cyclesApex 300 rated 3,500 cycles — 500 fewer
Why it mattersBuyers planning to run either unit hard for a decade-plus get more mileage from the cheaper machine, not the pricier one.
The specific dimensions that decide these two units — everything else is a tie.
Portability & Form Factor
Selected because: 95.8-lb weight gap is the single biggest differentiator between these two.
weight
Seventy-seven pounds is a one-person, bent-knees lift out of a trunk without ceremony. A hundred seventy-three is not — it's close to the weight of an actual person, and reviewers testing the Apex 300 report being unable to get it onto a table aloneB8.
The Ultra Plus's own reviewers still flagged its 74-ish lbs as heavyA9, which tells you something: even the lighter unit in this pair isn't light. It's simply the only one you can move solo without a cart or a second pair of hands.
Lifetime Value
Selected because: Ultra Plus wins on price, cost per kWh, and cost per warranty-year with no offsetting weakness.
cost / lifetime kWh
Run the ownership math and the Ultra Plus comes out ahead on every line: $1,499 against $1,799 up front, $0.12 against $0.19 per lifetime kWh, and $300 against $360 per warranty-year. None of those numbers move in the Apex 300's favor.
The gap holds even though the Apex 300 carries a higher rated surge — 7,680W against 7,200W — extra headroom that costs real money and mostly goes unused outside starting a heavy compressor load.
What the Specs Don't Tell You
Selected because: Weight and noise gotchas both fire and both favor the Ultra Plus.
rated cycles
Both flagged gotchas point the same direction. The Apex 300 asks for a near-two-person lift at 173 lbs, and it runs 45dB under load against the Ultra Plus's 30dB — a 15dB gap that reads as the difference between background hum and something you notice across a room.
Neither is a defect; both are the tax on packing more battery and a bigger inverter into a chassis. The real question is whether the Apex 300's extra headroom is worth carrying that tax around.
Growth Path
Selected because: Apex 300's solar ceiling is its one genuine edge — worth surfacing honestly.
solar input
Both units are expandable, so shipped capacity isn't a hard ceiling for either. Where they split is solar input: the Apex 300 accepts up to 2,400W against the Ultra Plus's 1,600W, an 800W gap that shortens a full recharge on a sunny day for anyone feeding it from an array.
That's a real advantage, but a narrow one — it only pays off for buyers actually solar-charging at scale. For grid-and-generator buyers, that extra 800W of input ceiling never gets used, and the Ultra Plus's lower price and lighter chassis matter more.
Strengths & trade-offs
EcoFlow DELTA 3 Ultra Plus
Strengths
- +Costs $200 less
- +Lighter by 6.6 lb
- +Larger battery capacity
Trade-offs
- –No major technical downsides compared to rival.
BLUETTI Apex 300
Strengths
- +Higher AC output
- +Faster solar charging
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
Either unit
Both handle two nights comfortably. The Apex 300 uses 89% and the DELTA 3 Ultra Plus uses 80%. With this little difference, pick based on weight and portability instead. The lighter unit wins for car camping.
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
Either unit
Both survive the blackout with similar margin. Since the capacity difference doesn't matter here, focus on which unit has UPS mode — seamless switchover protects your router and PC from the split-second power gap.
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
Both are wildly overqualified for CPAP. You're using 14% 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.
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
Either unit
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.
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
Either unit
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.
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: DELTA 3 Ultra Plus runs 12.7h vs 11.5h.
$1,499 list · direct from EcoFlow
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 0–174.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–34.8hHigh-Draw Appliances
These reveal the real limitsscale 0–2.6h¹ 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 15, 2026
Verdict: the DELTA 3 Ultra Plus
The Ultra Plus wins on price ($1,499 vs $1,799), weight (77.2 lbs vs 173 lbs), noise (30dB vs 45dB), and lifetime cost per kWh ($0.12 vs $0.19) — a clean sweep on every axis a typical buyer weighs. The Apex 300's only real advantage is its 2,400W solar ceiling against the Ultra Plus's 1,600W, which matters only to buyers running a serious off-grid panel array. Everyone else should keep the $300 and take the lighter, quieter unit.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 15, 2026. The links below open EcoFlow's and BLUETTI's current prices.
$1,499.00 list · direct from EcoFlow
or check the Apex 300 price$1,699.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 15, 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
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 3 Ultra Plus rates 4.9/5 (96th percentile of 25 Large-class units), and Apex 300 rates 4.9/5 (92nd percentile of 25 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.
Weight Reality Check
Neither unit is grab-and-go. The DELTA 3 Ultra Plus (77.2 lbs) is manageable solo but heavier than a large checked suitcase. The Apex 300 (83.8 lbs) is noticeably heavier. That's a 7 lb difference.
Apex 300: 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.
Full record above — the Test Desk pick is the DELTA 3 Ultra Plus.
Check DELTA 3 Ultra Plus price →or check the Apex 300 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 DELTA 3 Ultra Plus wins on both sticker price and long-term value. At $0.12/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. Supports up to 180kWh modular expansion with DELTA Pro Ultra X.
Worth knowing
The Oct 2025 DELTA Max 2000 recall (overheating/fire risk, 6 incidents) is worth noting. Also 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 (Apex 300, 3072Wh). 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. Full LFP standardization across lineup (3,500-6,000+ cycles). 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 3 Ultra Plus
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,072Wh.
Accepts up to 1,600W 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.
Generous port selection supports complex multi-device setups.
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 Apex 300's higher solar ceiling (2,400W vs 1,600W) gives it the stronger off-grid growth path — more panels can feed a bigger bank as it grows.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3 Ultra Plus
This is a very recent release, so genuine long-term owner threads don't exist yet — what's available is professional reviewer testing rather than seasoned owner forums, and that limit should be treated honestly. Within it, reviewers are consistent: fan noise stays quiet even at full inverter load, comparable to EcoFlow's flagship DELTA Pro UltraA1A2, and build quality is repeatedly called substantial rather than fragileA8. The one recurring knock is weight — reviewers call the roughly 74-lb chassis "thunderous"A9 — and one flagged an odd overload behavior where the 30A port cuts first when the unit is pushed too hardA3.
On price, the pattern is stark: reviewers dock the $2,899 MSRP hardA10, but call the $1,499–$1,599 street price a completely different value equationA11 — which is the price this comparison uses.
“even when you're pushing it hard, the DELTA 3 Ultra Plus runs much quieter than older EcoFlow models, like the DELTA 2 Max”
Sources
thesolarlab.com · postperspective.com · appleinsider.com · digitaltrends.com · storagereview.com
BLUETTI Apex 300
Apex 300 owner data is also thin — this shipped in late 2025, so what exists is community-forum troubleshooting and press reviews rather than seasoned owner reports. The clearest pattern is firmware trouble: multiple threads describe updates locking the unit into Backup modeB1, throwing Error 004 mid-chargeB2, or breaking Bluetooth and Home Assistant connectionsB3B4.
The other consistent theme is weight and ports. Reviewers call it so heavy that carrying it more than a few feet, or lifting it onto a table, isn't realistic aloneB8, and the unit ships without front-facing DC or USB ports — you need the $300 Hub D1 accessory just to get themB7B11, with a further $699 Hub A1 required to parallel two units togetherB12.
“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
- Professional reviewers consistently describe the fan noise as very quiet even under heavy load, comparable to EcoFlow's premium DELTA Pro Ultra line. [DELTA 3 Ultra Plus · 3 entries]
- Reviewers report solid UPS/pass-through charging performance with no noticeable switchover issues or output throttling tied to input wattage. [DELTA 3 Ultra Plus · 2 entries]
- The unit's high weight (~74 lbs) and premium MSRP are repeatedly flagged as drawbacks, though discounted street pricing is seen as making the value proposition much stronger. [DELTA 3 Ultra Plus · 3 entries]
- Build quality/durability is praised as substantial and non-fragile across multiple independent reviews. [DELTA 3 Ultra Plus · 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
“even when you're pushing it hard, the DELTA 3 Ultra Plus runs much quieter than older EcoFlow models, like the DELTA 2 Max”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · unknown · [positive]
- A2
“we'd probably say the noise it creates is similar to what you hear when you run the DELTA Pro Ultra, which is pretty amazing”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · unknown · [positive]
- A3
“One weird thing we noticed was the fact that the unit always seems to shut down the 30A port first when you overload the unit”
thesolarlab.com — EcoFlow DELTA 3 Ultra Plus Review: The Ultimate DELTA? · unknown · [mixed]
- A8
“It does not feel cheap or fragile. Everything from the outer shell case to the plastic buttons and the AC cable feels substantial and durable”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11 · [positive]
- A9
“Weighing in at a thunderous 74 pounds, the Ultra is not considered lightweight by any standards”
appleinsider.com — EcoFlow Delta 3 Ultra Plus review: Premium, but solid power · 2025-11 · [mixed]
- A10
“Where it falls short is in price justification at its $2,899 MSRP”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review: Portability meets serious firepower · unknown (approx. 1 week old at capture) · [negative]
- A11
“At the heavily discounted street price of around $1,499–$1,599, the value equation shifts dramatically in the Ultra Plus's favor”
digitaltrends.com — EcoFlow DELTA 3 Ultra Plus Review: Portability meets serious firepower · unknown · [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]
- 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]
- B12
“Say you want to connect multiple Apex 300 power stations together, you'll need to buy the Bluetti Hub A1 Parallel Box, which retails for around $699!”
TheSolarLab — 'Bluetti Apex 300 Review: Cheap, Practical Home Backup?' · unknown · [negative]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the DELTA 3 Ultra Plus if you…
- →You want the lower sticker price, a chassis you can move solo, and a quieter overnight recharge — the Ultra Plus wins all three outright.
- →You're comparing on total ownership cost; its $0.12 per lifetime kWh beats the Apex 300's $0.19 with no asterisk.
Buy the Apex 300 if you…
- →You already run a serious solar array and will actually use the extra 800W of input headroom over the Ultra Plus.
- →You've read the weight and noise tradeoffs in full and still prefer BLUETTI's ecosystem for other reasons.
If neither fits
If your real need is a full van-life day, both fall short in a single charge — that draw runs around 4,685Wh, well past the Ultra Plus's 3,072Wh or the Apex 300's 2,764.8Wh. Look at a multi-battery or whole-home setup instead of choosing between these two.
The Bottom Line
The Ultra Plus wins this by not losing anywhere that matters: $300 cheaper, 95.8 lbs lighter, 15dB quieter, and a lower cost per lifetime kWh than the Apex 300 manages. Its only real deficit is a smaller solar ceiling — 1,600W against 2,400W — which matters exclusively to buyers already running serious panel arrays.
For everyone else, this isn't close. Take the Ultra Plus, keep the $300, and don't think about it again.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the BLUETTI Apex 300 worth $300 more than the EcoFlow DELTA 3 Ultra Plus?
Not on the numbers alone. The Apex 300 costs $1,799 against the Ultra Plus's $1,499, weighs 173 lbs against 77.2 lbs, and runs 45dB under load against 30dB. Its one real edge is solar input — 2,400W against 1,600W — which only pays off if you're already running a large panel array.
Which one is easier to move around?
The Ultra Plus, by a wide margin. At 77.2 lbs it's a one-person lift; at 173 lbs, the Apex 300 needs two people or a cart. Reviewers testing the Apex 300 report being unable to lift it onto a table alone.
Do both support battery expansion?
Yes — both are rated expandable, so neither locks you into its shipped capacity forever. The Apex 300's larger solar ceiling gives it a slight edge for buyers scaling an off-grid array over time.
Which one is quieter?
The Ultra Plus, by 15dB — 30dB against the Apex 300's 45dB. Reviewers describe the Ultra Plus's fans as unobtrusive even at full inverter load.
Is the Apex 300 too new to trust the reviews?
It's new enough that most available commentary is press testing and community-forum troubleshooting rather than seasoned owners. Multiple threads describe firmware updates causing mode-lock or connectivity issues, which is worth treating as an early-adopter risk until more owner data accumulates.
Where to buy
EcoFlow DELTA 3 Ultra PlusPick
$1,499.00
$1,499.00 list · direct from EcoFlow
BLUETTI Apex 300
$1,699.00
$1,699.00 list · direct from BLUETTI
Prices may vary by retailer and are subject to change.