Head-to-head test
BLUETTI Apex 300 + B300K vs BLUETTI Elite 400
The Elite 400 is a sealed box — what you buy is the ceiling — while the Apex 300 + B300K can grow with you, and Van Life Daily is the scenario that actually proves it: the Elite needs 144% of its own capacity to cover a day the Apex finishes with room left.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
BLUETTI
Apex 300 + B300K
6,552Power Score · The AC & Fridge Zone
$2,599.00 list · direct from BLUETTI
BLUETTI
Elite 400
5,086Power Score · The AC & Fridge Zone
$1,399.00 list · direct from BLUETTI
Spec deltas
The BLUETTI Apex 300 + B300K and Elite 400 are both BLUETTI, both LFP, and both carry a 5-year warranty — but they're built for different futures. The Apex expands with a second B300K battery; the Elite 400 is a closed system at 3,840Wh for life.
That difference shows up hardest in Van Life Daily, a scenario needing 4,685Wh: the Apex covers it using its full stacked capacity, but the Elite 400 would need 144% of its own 3,840Wh to do the same job — it simply can't finish that day on one charge.
The Elite 400 answers back with weight and quiet: 85 lbs against 148.8, and 30dB against 45dB under load. For a buyer whose needs are fixed at a modest, one-day scale, that's the more livable unit. For a buyer whose needs might grow, the Apex's expansion path is the more durable purchase.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
The Apex 300 + B300K's B300K pack is designed for exactly this: van lifers can add another 2.7kWh simply by buying a second unitA13. The Elite's ceiling is fixed the day you buy it; the Apex's ceiling moves with your budget.
Elite 400 has no expansion path — closed system at 3,840WhVan Life Daily needs 4,685Wh, and the Elite 400 would need 144% of its own capacity to cover it
Why it mattersAnyone whose power needs might grow — a bigger rig, more appliances, longer trips — should treat the Elite's lack of expansion as disqualifying, not just inconvenient.
That's because the Apex holds 1,689.6Wh more capacity for a proportionally smaller price premium — more energy moved per dollar spent, even though the sticker is higher. Cheaper to buy and cheaper to own aren't the same claim here, and they point in different directions.
Apex 300 + B300K costs $0.13 per lifetime kWh; Elite 400 costs $0.15Apex 300 + B300K costs $900 more up front ($2,599 vs $1,699)
Why it mattersBuyers with $1,699 as a hard ceiling should take the Elite; buyers comparing true cost of ownership should recognize the Apex's higher price buys a lower per-kWh cost, not just more capacity.
weight
That combination matters most in close-quarters use: a smaller footprint you can actually move solo, running near enough to sleep next to without a fan competing with the room. The Apex's extra capacity comes wrapped in 63.8 more pounds and 15 more decibels.
Elite 400 weighs 85 lbs against the Apex 300 + B300K's 148.8 lbs stackedElite 400 rates 30dB under load against the Apex's 45dB
Why it mattersCPAP users and anyone placing the unit indoors near living space should weight the Elite's quiet, lighter build heavily; anyone storing the unit in a garage or truck bed for occasional outages won't feel either difference.
Using 64% or 50% of a battery for a single trip or a single outage leaves less margin for anything unplanned — a second night, an unexpected appliance, a colder day that drains faster. The Apex's larger tank means the same events cost it less than half its capacity in every case.
Weekend Camping needs 2,100Wh: Apex covers it at 45%, Elite 400 needs 64% of its own capacity8-Hour Blackout needs 1,645Wh: Apex covers it at 35%, Elite 400 needs 50%
Why it mattersBuyers who want built-in slack for the unexpected should lean toward the Apex; buyers confident their draws are predictable and modest can run the Elite closer to its edge without issue.
The specific dimensions that decide these two units — everything else is a tie.
Growth Path
Selected because: Expandable versus sealed is the single structural difference between two same-brand, same-chemistry units.
solar input
This is the axis that actually separates two units built on the same chemistry, from the same brand, at the same warranty term. The Apex 300 + B300K adds a second B300K battery without replacing the base unit — an owner-confirmed path for van lifers looking to add another 2.7kWhA13. The Elite 400 has no such option: what you buy on day one is what you own for the life of the unit.
That's not a flaw in the Elite so much as a different bet — BLUETTI built it as a complete, closed package rather than a platform. If your power needs are genuinely fixed, closed isn't a downside. If there's any chance they're not, it's the one decision on this page you can't undo later.
Your Life, Your Pick
Selected because: Van Life Daily is a hard fail for the Elite; the other scenarios show margin differences worth surfacing.
Van Life Daily draws the clearest line: at 4,685Wh needed, the Apex covers it at 100% of its stacked capacity while the Elite 400 would need 144% of its own — it simply can't finish that day without a recharge mid-cycle. Weekend Camping and 8-Hour Blackout both go to the Apex too, not because the Elite fails them, but because it's using 64% and 50% of its tank respectively against the Apex's 45% and 35%.
CPAP Overnight, Remote Workday, and Tailgate Party are close enough that either unit handles them comfortably — the Elite's smaller battery just isn't being stressed by those lighter loads. The pattern across the board: the bigger the ask, the more the Apex's extra capacity pays for itself in margin.
Lifetime Value
Selected because: The Apex costs more but wins cost-per-kWh, a counterintuitive result worth explaining.
cost / lifetime kWh
$900 more up front sounds like the Elite is the obvious value pick, and on sticker price alone it is. But cost-per-lifetime-kWh flips that: $0.13 for the Apex against $0.15 for the Elite, because the Apex's 1,689.6Wh larger capacity delivers more total energy over its life relative to the extra it costs.
The warranty-year cost tells a similar story — $520 a year for the Apex against $340 for the Elite, both over identical 5-year terms. The Elite is cheaper per year of ownership in absolute dollars; the Apex is cheaper per unit of energy actually delivered. Which number matters depends on whether you're budgeting or drawing power.
Portability & Form Factor
Selected because: Weight and noise are the Elite's clean, undisputed wins.
weight
The Elite 400 wins this section outright: 85 lbs against the Apex's 148.8 stacked, and 30dB against 45dB under load. Both are meaningful, undiluted advantages, not a tradeoff dressed up as one.
For anyone moving the unit solo, or running it in a bedroom or shared space, that combination is the practical difference between a unit you manage without thinking about it and one that needs a plan every time it moves or runs hard.
Strengths & trade-offs
BLUETTI Apex 300 + B300K
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$1,200) than the Elite 400.
- –Significantly heavier (+63.8 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
BLUETTI Elite 400
Strengths
- +Costs $1,200 less
- +Lighter by 63.8 lb
Trade-offs
- –Weaker inverter (-1,240W) limits appliance compatibility.
- –Very heavy unit that may be difficult for one person to lift.
- –Sealed capacity — the Apex 300 + B300K can add batteries to grow past 3,840Wh; this one can't.
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 + B300K
The Elite 400 cuts it close at 64%. One cold night or an unexpected device and you're rationing power. The Apex 300 + B300K finishes at 45%, leaving real headroom for spontaneous use. If you camp in variable weather, that buffer keeps you relaxed instead of checking your battery app every 20 minutes.
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 + B300K
Both survive, but the Apex 300 + B300K finishes at just 35% used. That's enough reserve for a second blackout night. The Elite 400 at 50% 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 10% 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
Apex 300 + B300K
The Elite 400 runs out of juice. It only has 3,264Wh usable, but this scenario needs 4,685Wh. The Apex 300 + B300K covers it and still has 1h of phone charging left over.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the six scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: Apex 300 + B300K runs 22.9h vs 15.9h.
$2,599 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 0–313.3hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–62.7hHigh-Draw Appliances
These reveal the real limitsscale 0–4.7h¹ 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 Apex 300 + B300K, on Power Score margin
The Apex 300 + B300K costs $900 more than the Elite 400 ($2,599 vs $1,699), but it wins on the two things that actually separate them: it's expandable and the Elite isn't, and it's cheaper to own per lifetime kWh at $0.13 against the Elite's $0.15 despite the higher sticker. The Elite 400 wins on weight (85 lbs against 148.8) and noise (30dB against 45dB), and it completes CPAP Overnight, Remote Workday, and Tailgate Party scenarios with more margin to spare because it's simply not being asked to do as much. If your power needs are fixed and modest, the Elite is the lighter, quieter, cheaper buy. If they might grow, the Apex's expansion path is worth the extra $900.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 15, 2026. The links below open BLUETTI's current price.
$2,599.00 list · direct from BLUETTI
or check the Elite 400 price$1,399.00 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): UPS, RV Living.
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, Apex 300 + B300K rates 4.4/5 (67th percentile of 16 Home Backup-class units), and Elite 400 rates 3.6/5 (20th percentile of 16 Home Backup-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 Elite 400 (85 lbs) is manageable solo but heavier than a large checked suitcase. The Apex 300 + B300K (148.8 lbs) is firmly a two-person lift. It goes where you put it and stays there. That's a 64 lb difference, which you'll feel every time you relocate.
Apex 300 + B300K: 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.
The Elite 400's ceiling is fixed the day you buy it
No expansion battery exists for this unit. That's fine if 3,840Wh is genuinely enough forever — but there's no upgrade path if it isn't.
Both surge roughly 2x their continuous rating
7,680W surge on the Apex against 3,900W on the Elite. The ratio is similar; the absolute headroom favors the Apex for heavier single loads.
Line-interactive on both, with a small edge to the Apex
Under 10ms for the Apex against under 15ms for the Elite. Both are fast enough for most gear; neither is the true online design some buyers assume.
Warranty Value Comparison
The Elite 400 gives you 3.6 years of warranty per $1,000 spent, vs the Apex 300 + B300K's 1.9 years. That's 1.9× more coverage per dollar. An underrated factor if you're keeping this unit for years.
Full record above — the Test Desk pick is the Apex 300 + B300K.
Check Apex 300 + B300K price →or check the Elite 400 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
Both units have similar long-term ownership costs ($0.13/kWh vs $0.12/kWh). The price difference is what you see on the sticker — neither is a hidden bargain or rip-off.
Growth path
Apex 300 + B300K
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 5,530Wh.
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.
Elite 400
FIXED CAPACITYFixed at 3,840Wh — a sealed, complete system. No expansion port, but that capacity already covers heavy and multi-day loads.
Accepts up to 1,000W 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
The Elite 400 is sealed at 3,840Wh, which is fine if that covers you. The Apex 300 + B300K starts at 5,530Wh and can grow beyond it with BLUETTI expansion batteries — real headroom the Elite 400 doesn't have if your needs climb toward partial-home backup.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
BLUETTI Apex 300 + B300K
For van lifers specifically, reviewers call the expansion path a real advantage: the ability to add another 2.7kWh of capacity by simply buying a second B300K pack, rather than replacing the whole systemA13. That flexibility comes with friction, though — one reviewer testing a workaround for extra capacity called it roundabout and not as neat as having a proper second B300K batteryA11, and another found the companion app didn't show a percentage for DC-connected devices, just a flow indicator, despite the tablet clearly chargingA7.
The base Apex 300 ships without USB or DC ports beyond its AC outlets, a recurring complaint across reviewersA1, and the accessory that adds them, the Hub D1, runs close to $300 — a price multiple reviewers call steepA2. Set against that, load testing has been genuinely favorable: one reviewer drained the stack from 100% to 65% running a single wash cycleA9, and called the whole system one of the few that could replace a generator without noise, fumes, or maintenanceA4.
“The Apex 300 doesn't have USB ports, DC ports, or much of anything beyond its six AC plugs and high-voltage connectors.”
Sources
thesolarlab.com · techspective.net · digitalreviews.net · thesolarpit.com · cleantechnica.com · trustedreviews.com
BLUETTI Elite 400
Reviewers describe the Elite 400 as one of the most complete units in its capacity tier for 2026 — 3,840Wh of LFP, 3,900W surge, a 70-minute fast charge, 15ms UPS protection, and a built-in trolley for mobilityB2. Its 86-lb weight is called hefty in absolute terms but lighter than some competitors in the same classB3.
The recurring caveat is what the Elite chose not to include: only two AC sockets and no battery expansion at all, flagged as compromises that keep an otherwise strong unit from being a complete answer for anyone who might need more laterB4. There's no negative pattern beyond that in this ledger — the complaints are about what's missing, not what's broken.
“BLUETTI's largest Elite-range unit — a 3,840Wh LiFePO4 battery with 2,600W continuous output (3,900W Power Lifting), fixed at native capacity with no expansion.”
Sources
techradar.com · amazon.com · backuppowerhub.com · cleantechnica.com · notebookcheck.net · thesolarlab.com · edinburghnews.scotsman.co
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Reviewers consistently flag that the base Apex 300 has no USB/DC ports and requires a separate paid Hub D1 accessory, which some feel is overpriced for what it offers. [Apex 300 + B300K · 3 entries]
- Multiple sources note the extreme weight/bulk of the stacked Apex 300 + B300K system, making 'portable' a stretch despite handles/trolley options. [Apex 300 + B300K · 2 entries]
- Reviewers praise fast recharge and the system's ability to genuinely replace a generator for home backup and heavy loads like washers/dryers. [Apex 300 + B300K · 4 entries]
- Large 3,840Wh LFP capacity, fast charging, 15ms UPS, and a trolley are the praise; only two AC sockets, no expansion, and heavy weight are the caveats. [Elite 400 · 2 entries]
- A1
“The Apex 300 doesn't have USB ports, DC ports, or much of anything beyond its six AC plugs and high-voltage connectors.”
thesolarlab.com — Bluetti Apex 300 Review: Cheap, Practical Home Backup? · unknown (2025/2026) · [mixed]
- A2
“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.com — Bluetti Apex 300 Review: Cheap, Practical Home Backup? · unknown (2025/2026) · [negative]
- A4
“It's one of the few systems I've tested that feels like it could genuinely replace a generator, without the noise, fumes, or maintenance.”
techspective.net — Bluetti Apex 300 with B300K Review · 2025-09-21 · [positive]
- A7
“It did not even show the percentage on the app but only that there was a DC output flow and indeed my tablet was charging.”
digitalreviews.net — Bluetti B300K Expansion Battery Review · 2025-12 · [negative]
- A9
“Results: 1 wash took about 1 hour and drained the Apex from 100% down to 65%.”
digitalreviews.net — Bluetti Apex 300 Power Station Tests (Australia) Part II · 2025-09 · [positive]
- A11
“You can see, that whilst this works in a very roundabout way, it is not as neat and efficient as having a proper B300K battery to double the capacity.”
digitalreviews.net — Bluetti Apex 300 Power Station Tests (Australia) Part II · 2025-09 · [mixed]
- A13
“For van lifers, the Apex 300 is a great base station, and the ability to add another 2.7kWh of capacity by simply purchasing another B300K expansion pack is a game-changer.”
cleantechnica.com — The Bluetti Apex 300 & B300K Portable Power Station Tested · 2025-08-05 · [positive]
- B2
“Combines 3,840Wh LFP capacity, 3,900W surge, 70-minute fast charging, 15ms UPS protection, and a built-in trolley system — one of the most complete units at the 3,000Wh+ tier in 2026.”
backuppowerhub.com / cleantechnica.com — Elite 400 review · 2026 · [positive]
- B3
“A hefty ~86 lbs (39 kg), though reviewers note it's lighter than some competitors, with wheels and a trolley for mobility.”
notebookcheck.net / thesolarlab.com — Elite 400 review · 2026 · [mixed]
- B4
“Powerful, but reviewers flag only two AC sockets and no battery expansion as compromises — good but not quite as good as it could have been.”
techradar.com / edinburghnews.scotsman.com — Elite 400 review · 2026 · [mixed]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the Apex 300 + B300K if you…
- →Van lifers and off-grid users whose power needs might grow — the B300K expansion path adds capacity without a full system replacementA13.
- →Anyone regularly running Weekend Camping or 8-Hour Blackout-scale loads who wants built-in margin rather than running near the battery's edge.
- →Buyers focused on true cost of ownership rather than sticker price, where the Apex's lower cost-per-kWh wins out despite costing $900 more.
Buy the Elite 400 if you…
- →Buyers with fixed, modest power needs who know they won't outgrow 3,840Wh, and who value the Elite's 63.8-lb lighter build and 15dB quieter operation.
- →CPAP users or anyone placing the unit in a bedroom, where the Elite's 30dB rating and lighter frame make it the easier unit to live with.
- →Cost-conscious buyers whose hard budget ceiling is closer to $1,699 than $2,599, and who are fine paying slightly more per lifetime kWh for a lower purchase price.
If neither fits
Anyone who actually needs whole-home backup at scale should look past both of these — the biggest either one gets you, stacked, is well under what a real multi-day household outage demands.
The Bottom Line
These are the same brand and the same chemistry, so the decision comes down to one structural fact: the Apex 300 + B300K can grow past today's needs, and the Elite 400 cannot. That shows up hardest in Van Life Daily, where the Elite would need 144% of its own capacity to finish a day the Apex covers outright.
If your needs are genuinely fixed and modest, take the lighter, quieter, cheaper Elite 400. If there's any real chance you'll want more capacity later, the Apex's extra $900 buys a door that stays open.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Can the BLUETTI Elite 400 be expanded like the Apex 300 + B300K?
No. The Elite 400 is a closed system fixed at 3,840Wh for the life of the unit, with no expansion battery available. The Apex 300 + B300K, by contrast, accepts a second B300K pack to add capacity without replacing the base unit — the single structural difference between these two same-brand units.
Is the Apex 300 + B300K worth $900 more than the Elite 400?
It depends on whether your power needs might grow. The Apex costs more up front but works out cheaper per lifetime kilowatt-hour ($0.13 vs $0.15) and can expand later; the Elite 400 is lighter, quieter, and cheaper on the sticker, but what you buy is what you'll always have.
Which BLUETTI unit is quieter?
The Elite 400, at 30dB under load against the Apex 300 + B300K's 45dB — a 15dB gap that's noticeable in a shared or indoor space. If noise near a bedroom or CPAP setup is the priority, the Elite is the more comfortable unit to run.
Can either of these power a van or RV for a full day?
Van Life Daily needs 4,685Wh. The Apex 300 + B300K covers it at exactly 100% of its stacked capacity, with no margin left. The Elite 400 would need 144% of its own 3,840Wh to do the same job, meaning it cannot finish that day without a mid-cycle recharge — the clearest reason to pick the Apex for daily van life use.
Where to buy
BLUETTI Apex 300 + B300KPick
$2,599.00
$2,599.00 list · direct from BLUETTI
BLUETTI Elite 400
$1,399.00
$1,399.00 list · direct from BLUETTI
Prices may vary by retailer and are subject to change.