Head-to-head test
EcoFlow DELTA 3 Max Plus vs BLUETTI Apex 300
The DELTA 3 Max Plus matches the Apex 300's 10ms switchover speed at $800 less and 122 lbs lighter, and it costs $0.12 per lifetime kWh against $0.19 — the Apex 300's whole case rests on a weekend camping trip and a bigger solar ceiling.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
EcoFlow
DELTA 3 Max Plus
4,312Power Score · Appliance Class
$1,099.00 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 Max Plus costs $999 and the BLUETTI Apex 300 costs $1,799 — an $800 gap for two units that both switch over in 10ms and both expand with add-on batteries. The DELTA 3 Max Plus even outlasts the Apex 300 on paper, rated for 4,000 cycles against 3,500.
Weight tells the same story from a different angle: 50.7 lbs against 173 lbs, a 3.4x difference for a unit delivering 3,000W continuous output against the Apex 300's 3,840W — 78% of the power at 56% of the price and 29% of the weight.
The Apex 300's case rests on two things the DELTA 3 Max Plus genuinely can't match: enough capacity to clear a 2,100Wh weekend camping load, and a 2,400W solar ceiling that's 2.4 times the DELTA 3 Max Plus's 1,000W for anyone recharging off-grid across a multi-day outage.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
$800 and 122 lbs are buying capacity and solar ceiling here, not protection speed. That's a much narrower case than it first appears, since switchover is often the deciding spec for sensitive electronics.
The Apex 300 costs $800 more than the DELTA 3 Max Plus ($1,799 vs $999)The Apex 300 weighs 122.3 lbs more (173 lbs vs 50.7 lbs), while both units switch over at the same 10ms speed
Why it mattersBuyers picking the Apex 300 specifically to protect a router, modem, or networking gear during outages should know the cheaper, lighter DELTA 3 Max Plus does that job identically.
rated cycles
That combination is why the DELTA 3 Max Plus's cost per lifetime kWh comes in at $0.12 against the Apex 300's $0.19, a gap the Apex 300 can't close through capacity alone.
The DELTA 3 Max Plus is rated for 4,000 cycles against the Apex 300's 3,500The DELTA 3 Max Plus costs $999 against the Apex 300's $1,799
Why it mattersBuyers optimizing for total cost of ownership should default to the DELTA 3 Max Plus unless a specific scenario requires the Apex 300's extra capacity.
Everywhere else tested — 8-hour blackout, remote workday, CPAP overnight, tailgate party — the gap between these two units either ties or favors the cheaper, lighter unit. Weekend camping is the exception that actually needs the Apex 300's extra 716.8Wh.
Weekend Camping needs about 2,100Wh; the DELTA 3 Max Plus covers 121% of that load, meaning it falls shortThe Apex 300 covers 89% of the same load, meaning it clears it
Why it mattersBuyers whose trips clear 2,100Wh should budget for the Apex 300; everyone else is paying $800 for headroom outside their actual use case.
solar input
Off-grid buyers who lean on solar during extended outages get real value from the Apex 300's higher ceiling. Buyers planning to expand capacity later get a smoother, cheaper path with the DELTA 3 Max Plus's add-on batteries than with the Apex 300's hub ecosystem.
The Apex 300's 2,400W solar ceiling is 2.4 times the DELTA 3 Max Plus's 1,000WReviewers describe the DELTA 3 Max Plus's own expansion path — up to 10kWh via Smart Extra Batteries — as polished and effortlessA4, while the Apex 300's equivalent add-ons run $300 for USB/DC ports and $699 to parallel unitsB7B11B12
Why it mattersSolar-dependent buyers should weight the Apex 300's ceiling; buyers planning future capacity expansion should price out both companies' actual add-on costs before assuming expandability is a wash.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: The cheaper unit also has the lower cost per kWh and more cycles — a clean value case.
cost / lifetime kWh
The DELTA 3 Max Plus costs $0.12 per lifetime kWh against the Apex 300's $0.19, and it gets there while also carrying a higher cycle rating — 4,000 against 3,500. This isn't the usual case of a cheaper unit trading away longevity; it's cheaper and it lasts longer per cycle count.
Cost per warranty year runs the same direction: $200 against $360 for identical five-year coverage. The Apex 300 has to make its case through capacity and solar ceiling, because the ownership math doesn't favor it.
Your Life, Your Pick
Selected because: Weekend Camping is the DELTA 3 Max Plus's one real gap, worth isolating from the rest.
The DELTA 3 Max Plus ties the Apex 300 on CPAP Overnight and Tailgate Party, and comes close on an 8-Hour Blackout, using 94% of its capacity against the Apex 300's 70%. Weekend Camping is the exception — its 2,048Wh capacity falls short of the 2,100Wh load where the Apex 300 clears with margin.
Van Life Daily beats both units regardless of which you buy. Outside of weekend camping specifically, the DELTA 3 Max Plus is doing comparable work for $800 less.
Portability & Form Factor
Selected because: 173 lbs vs 50.7 lbs is the largest single gap between these two units.
weight
50.7 lbs is a single-person carry; 173 lbs is a two-person, plan-your-placement commitment. For 3.4 times the weight, the Apex 300 delivers 840W more continuous output and 1,680W more surge — real, but not proportional to the mass difference.
Buyers moving their unit between a vehicle, a garage, and a campsite regularly are choosing a fundamentally lighter category of object with the DELTA 3 Max Plus, not just a smaller number on a spec sheet.
Growth Path
Selected because: Both expand, but the real cost and solar-ceiling differences are worth surfacing plainly.
solar input
Both units expand with add-on batteries, but the DELTA 3 Max Plus's path is described by reviewers as scaling smoothly from 2kWh up to 10kWh across five charging methods, with the experience read as polished rather than bolted-onA4. The Apex 300 expands too, but getting basic USB/DC ports back costs an extra $300 hub, and paralleling units runs another $699B7B11B12.
The Apex 300's 2,400W solar ceiling is the genuine advantage here — 2.4 times the DELTA 3 Max Plus's 1,000W — which matters specifically for buyers refilling from panels during a multi-day outage rather than from a wall outlet.
Brand Trust
Selected because: Cross-brand pair with genuinely different support and ecosystem tradeoffs.
EcoFlow runs the deepest product ecosystem in the category and the largest community, with fast X-Stream charging as its signature technology; support experiences are polarized between smooth prepaid-label replacements and longer waits on complicated claims. BLUETTI's app experience is rated highly, but its support runs more inconsistently, heavily email-based with China-timezone delays.
Buying direct from either manufacturer tends to produce smoother support outcomes than going through a reseller. Neither brand's track record here is decisive enough to override the price, weight, and cost-per-kWh gaps already on the table.
Strengths & trade-offs
EcoFlow DELTA 3 Max Plus
Strengths
- +Costs $600 less
- +Lighter by 33.1 lb
Trade-offs
- –Weaker inverter (-840W) limits appliance compatibility.
BLUETTI Apex 300
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$600) than the DELTA 3 Max Plus.
- –Significantly heavier (+33.1 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
Apex 300
The DELTA 3 Max Plus falls just short of a typical camping weekend's draw, while the Apex 300 clears it with margin. Combined with the Apex 300's stronger solar ceiling, this is the clearest case for paying its premium.
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
Apex 300
Both survive, but the Apex 300 finishes at just 70% used. That's enough reserve for a second blackout night. The DELTA 3 Max Plus at 94% leaves little margin if the outage runs longer than expected. In storm-prone areas, that remaining capacity is insurance.
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 18% 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
Apex 300
The Apex 300 gives you a comfortable buffer at 39%. Enough to work late, join extra video calls, or charge a second device without worry. The DELTA 3 Max Plus at 52% 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
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: Apex 300 runs 11.5h vs 8.5h.
$1,699 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 0–156.7hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–31.3hHigh-Draw Appliances
These reveal the real limitsscale 0–2.4h¹ 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 15, 2026
Verdict: the EcoFlow DELTA 3 Max Plus
The DELTA 3 Max Plus costs $999 against the Apex 300's $1,799, weighs 50.7 lbs against 173 lbs, and matches its 10ms UPS switchover exactly. Its cost per lifetime kWh is $0.12 against the Apex 300's $0.19, and it even carries more cycles — 4,000 against 3,500 — despite costing 44% less. It also covers CPAP overnight, a tailgate party, and comes within reach of an 8-hour blackout on its own. The honest gap is real: Weekend Camping needs more than the DELTA 3 Max Plus's 2,048Wh delivers, and the Apex 300's 2,400W solar ceiling more than doubles the DELTA 3 Max Plus's 1,000W for anyone leaning on panels during an extended outage. Outside those two specific cases, the DELTA 3 Max Plus is the better buy on cost, weight, and cycle life all at once.
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.
$1,099.00 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): CPAP, Tailgating, Apartment Balcony.
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 Max Plus rates 4.3/5 (58th 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.
173 lbs vs 50.7 lbs Is a Different Category of Object
The Apex 300 delivers 840W more continuous output for 3.4 times the weight. If you're carrying the unit in and out of a vehicle regularly, that ratio matters more than the extra wattage most loads won't use.
Both Stay Quiet, But Not Equally Quiet
The DELTA 3 Max Plus's spec sheet lists 30dB and reviewers report it barely rising above room noise even under full charging load. The Apex 300 is rated at 45dB — still reasonable, but audibly louder next to its rival.
Warranty Value Comparison
The DELTA 3 Max Plus gives you 4.5 years of warranty per $1,000 spent, vs the Apex 300's 2.9 years. That's 1.5× more coverage per dollar. An underrated factor if you're keeping this unit for years.
Full record above — the Test Desk pick is the DELTA 3 Max Plus.
Check DELTA 3 Max 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 Max Plus wins on both sticker price and long-term value. At $0.13/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
Both brands have workable but imperfect support records. The bigger differentiator in this matchup is the unit itself — price, weight, and expansion economics — not the logo on the front.
Growth path
DELTA 3 Max Plus
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 2,048Wh.
Accepts up to 1,000W 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 1,000W) 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 Max Plus
The DELTA 3 Max Plus bumps output to 3,000W continuous with a 6,000W surge, a real step up from the standard DELTA 3 Max's 2,400W and 4,800W surgeA1. Reviewers describe it staying genuinely quiet under typical loads, with the decibel meter barely registering above room noise a meter away even while charging at full powerA2.
Charging is fast — 80% in about 50 minutes, full in around 70A3 — and the expansion path scales from 2kWh up to 10kWh through Smart Extra Batteries across five charging methods, described as effortless rather than complicatedA4. Field data on this specific model is still accumulating relative to older EcoFlow units, but early coverage is consistently positive.
“Bumps output to 3,000W continuous with a 6,000W surge — a significant upgrade over the DELTA 3 Max's 2,400W and 4,800W surge.”
Sources
storagereview.com · androidguys.com · t3.com · trustedreviews.com
BLUETTI Apex 300
Owners pricing out the Apex 300's expansion story hit real numbers fast: the D1 Power Hub that restores basic USB/DC ports runs about $300, and the A1 Parallel Box needed to connect multiple units runs closer to $699B7B11B12 — a contrast worth knowing against a DELTA 3 Max Plus that scales without extra hardware purchases.
On the hardware itself, the Apex 300 draws praise for handling that heavy load without sounding like the loud units some reviewers have tested elsewhereB5, and the rubber port bungs keep dust and moisture out in RV or utility-room placements, even if they're mildly annoying for oversized plugsB9. Firmware remains the weak point — owners report updates locking units into Backup mode or triggering error codes mid-chargeB1B2.
“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
- The Max Plus delivers more output and surge than the Max, plus a larger expansion ceiling, while staying quiet and fast-charging — a polished, higher-power take on the same platform. [DELTA 3 Max Plus · 3 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
“Bumps output to 3,000W continuous with a 6,000W surge — a significant upgrade over the DELTA 3 Max's 2,400W and 4,800W surge.”
storagereview.com / androidguys.com — DELTA 3 Max Plus review · 2026 · [positive]
- A2
“Stays genuinely quiet under typical loads, only spinning up its fans briefly during shutdown; even charging at full power the decibel meter barely registered above room noise at one meter.”
t3.com / trustedreviews.com — DELTA 3 Max Plus review · 2026 · [positive]
- A3
“Fast charging — reached 80% in about 50 minutes and full in around 70 minutes.”
t3.com — DELTA 3 Max Plus review · 2026 · [positive]
- A4
“Scalable — supports expandable capacity from 2kWh up to 10kWh via Smart Extra Batteries, with 5 charging methods; reviewers describe it as polished and effortless.”
storagereview.com / t3.com — DELTA 3 Max Plus 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]
- 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]
- B9
“Each is protected by a rubber bung, which is good if you've got the Apex 300 below the sink in a utility room or RV. It can be annoying when it comes to inserting oversized plugs or adaptors, though.”
Trusted Reviews — 'Bluetti Apex 300 Review' · 2025-10 · [mixed]
- 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 Max Plus if you…
- →You want the lowest lifetime cost per kWh in this matchup and your trips or outages don't clear 2,100Wh.
- →You're moving the unit regularly — 50.7 lbs against 173 lbs is a genuinely different category of object to carry.
Buy the Apex 300 if you…
- →Your camping trips or blackouts regularly clear 2,100Wh, where the DELTA 3 Max Plus falls just short.
- →You're relying on solar to recharge during multi-day outages and want the 2,400W ceiling over the DELTA 3 Max Plus's 1,000W.
If neither fits
If your daily draw looks like van life at roughly 4,685Wh, neither unit covers it — the DELTA 3 Max Plus needs 269% of what it holds, the Apex 300 needs 199%. Look at a dedicated van power system or a much larger flagship unit instead.
The Bottom Line
Match the switchover speed, undercut the price by $800, weigh a third as much, and still come out cheaper per lifetime kWh with more rated cycles — that's the DELTA 3 Max Plus's case, and it's a strong one for most buyers.
The Apex 300 earns its premium in two specific places: a weekend camping load the DELTA 3 Max Plus can't quite cover, and a solar ceiling more than double its rival's for off-grid recharging. Outside those two scenarios, the lighter, cheaper unit is doing comparable work for less.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the BLUETTI Apex 300 worth $800 more than the DELTA 3 Max Plus?
For most buyers, no. Both units switch over at the same 10ms speed, and the DELTA 3 Max Plus costs $0.12 per lifetime kWh against the Apex 300's $0.19 while carrying more rated cycles. The Apex 300 earns its premium mainly through a 2,400W solar ceiling and enough capacity to clear a weekend camping trip past 2,100Wh.
Can the DELTA 3 Max Plus handle a weekend camping trip?
Not quite — a typical camping weekend needs about 2,100Wh, and the DELTA 3 Max Plus's 2,048Wh capacity covers roughly 83% of that load. The Apex 300 clears the same load with room to spare, which is one of its two real advantages in this matchup.
Which unit recharges faster from solar panels?
The Apex 300, by a wide margin. Its 2,400W solar ceiling is 2.4 times the DELTA 3 Max Plus's 1,000W, which matters most for buyers leaning on panels during a multi-day, off-grid outage.
Is expanding the Apex 300 more expensive than expanding the DELTA 3 Max Plus?
For basic functionality, yes. Restoring USB/DC ports on the Apex 300 requires a roughly $300 hub accessory, and paralleling multiple units costs about $699 more. The DELTA 3 Max Plus's Smart Extra Battery expansion is described by reviewers as scaling smoothly without those add-on costs.
Which unit is lighter to carry?
The DELTA 3 Max Plus, by a wide margin — 50.7 lbs against the Apex 300's 173 lbs, a 3.4x difference. It's a single-person carry against a unit built to be placed once and left.
Where to buy
EcoFlow DELTA 3 Max PlusPick
$1,099.00
$1,099.00 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.