Head-to-head test
BLUETTI Apex 300 vs BLUETTI EP900 + 2×B500
The EP900 wins five of the six scenarios here, four of them are loads the Apex 300 also finishes, and the one it doesn't is a 4,685Wh day: closing that single gap is the whole difference between $1,699 and $10,298.
Full profiles: BLUETTI Apex 300 → · BLUETTI EP900 + 2×B500 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
$1,499.00 · direct from BLUETTI
down from $1,699 · 12% below usual
Last checked 1 day ago. Prices move — check before you buy.
$10,298.00 · direct from BLUETTI
Last checked 1 day ago. Prices move — check before you buy.
Spec deltas
The Apex 300 finishes five of the six loads on this page. That is the part the scoreboard buries: the EP900 + 2×B500 takes five of six scenario wins, but four of them are it finishing with more left over than a unit that also finished. $1,699 against $10,298 is what that extra headroom costs.
These are not two sizes of the same thing. One is 83.8 lb that you set down where you want it this week and somewhere else next month. The other is 343 lb of inverter and battery modules that goes in once, wired, and stays. You place the Apex. You commission the EP900.
Take the Apex 300, with the catch stated up front: it is new enough that its public record is mostly firmware troubleA1A2A4 and press units rather than long-term ownersA5A9A10. Spend the $10,298 if your normal day genuinely runs past 2,350Wh usable, or if the electrical work is happening anyway.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
That changes what the money is for. Against $1,699, the $10,298 buys margin on four loads the Apex already covered and capability on exactly one, the 4,685Wh van-life day. Margin earns its keep when the load is unpredictable. On a daily draw you can actually add up, it is the textbook definition of overbuying.
The EP900 + 2×B500 wins Weekend Camping, 8-Hour Blackout, Remote Workday, Tailgate Party and Van Life DailyThe Apex 300 also passes the first four of those on 2,350Wh usable: 2,100Wh, 1,645Wh, 910Wh and 670WhVan Life Daily needs 4,685Wh and the Apex 300 is 2,335Wh short of it
Why it mattersTotal your real worst day in watt-hours before you read the scoreboard. Under 2,350Wh, the sweep tells you nothing.
cost / lifetime kWh
The years work the same way. Both columns assume one full cycle a day, 16.4 of them either way, and a full cycle means two different events here. A house drawing the days on this page, 670Wh to 2,100Wh, never fills the EP900 once, so it never buys the 59,520 kWh its figure is priced against. It pays $10,298 up front for energy it will not use, and doesn't collect a cheaper kilowatt-hour for it either.
Cost per lifetime kWh: $0.17 for the EP900 + 2×B500 against $0.10 for the Apex 300Total lifetime energy: 59,520 kWh for the EP900 + 2×B500 (9,920Wh × 6,000 cycles) against 16,589 kWh for the Apex 300 (2,764.8Wh × 6,000 cycles)The lifespan column reads 16.4 years for both at daily use, with no capacity term in it: a cycle is 9,920Wh on one unit and 2,764.8Wh on the other
Why it mattersTreat the lifetime row as a ceiling for full-house consumption, not as a saving available to the person reading this page.
So the gap is not buying faster failover. It is buying circuits, an install, and a quote nobody reading this page has seen. Our own payload cannot settle how much the EP900 delivers, listing 7,600W where its vendor material claims 9,000WB1, which is exactly the class of question an installer answers and a comparison table cannot.
Both units are listed at a 10ms grid-to-battery switchoverThe EP900 + 2×B500 is 343 lb and its $10,298 is hardware; vendor material quotes complete EP900 systems at roughly $14,500-$15,000 excluding installationB4Our spec line says 7,600W output while vendor material describes one EP900 inverter as up to 9,000W, enough for a washer, dryer, heater and refrigeratorB1
Why it mattersIf outage transfer is your reason for shopping, that spec does not separate these two. Get the installed number before the price gap means anything.
Read the asymmetry the right way round. The EP900's clean sheet here is not a reliability result, it is an absence of independent owners, described in copy that covers configurations from 9.9kWh up to about 39.6kWh across eight B500 modulesB2 rather than the system on this page. The Apex's known faults are software and accessory pricing, and on this evidence BLUETTI's updates have been the cause rather than the cureA1A2A3.
Apex 300 owners report a firmware update leaving the unit stuck in Backup modeA1, charging stopping at 97% with Error 004A2, and Bluetooth and Home Assistant disconnects after updatingA3A4Every EP900 entry in this ledger is vendor or vendor-adjacent materialB1B2B3B4Growing the Apex past one unit means BLUETTI's Hub A1 parallel box at around $699A12
Why it mattersIf you want to know a unit's faults before you own it, the Apex is currently the only one of these two with any faults on record.
The specific dimensions that decide these two units — everything else is a tie.
Portability & Form Factor
Selected because: 83.8 lb is one object you can put somewhere; 343 lb is a system total covering an inverter and two B500 modules, with no per-box weight anywhere in our data.
weight
Nobody relocates 343 lb, and our data cannot tell you what any single piece of it weighs. That number is a system total covering the EP900 inverter and the two B500 modules the name declares, and the module count checks out: 9,920Wh of system capacity divided by the 4,960Wh a B500 holdsB2 is two of them. The figure describes a delivery and a floor plan, not a lift.
The Apex 300's 83.8 lb is one object, and it is still a serious one. A reviewer could hardly move it more than a few feet and could not get it onto a tableA8. What it buys you is optionality: the Apex can follow you to a new apartment, a job site, or a friend's house during an ice storm. The EP900 makes that decision once, on installation day, and you live inside it.
Your Life, Your Pick
Selected because: The Apex 300 finishes five of these six loads on 2,350Wh usable, so only the 4,685Wh van-life day actually separates the two units.
Six rows, one real result. Van Life Daily is it: 4,685Wh against the Apex 300's 2,350Wh usable, a 2,335Wh shortfall no setting recovers. The other five fit inside the Apex's budget, and the tightest of them, Weekend Camping's 2,100Wh, leaves 250Wh spare. That is a thin pass measured in watt-hours, not merely thin next to a 9,920Wh system, and it is the one row where a colder night than planned changes your morning. Worth knowing what these rows do not test: they are watt-hour budgets with no appliance wattage attached, so nothing here exercises the Apex's 3,840W inverter or its 7,680W surge rating, and our sheet carries no surge figure at all for the EP900 side.
One gap worth naming once, because it shapes two of these rows: the scoring has no category for an installed system. Weekend Camping and Tailgate Party grade every unit as though it drove itself to the site, and the copy rewards the lighter one, so 343 lb of wired hardware collects wins at a campsite and a parking lot it will never see. Read those two as capacity arithmetic and nothing more.
Lifetime Value
Selected because: The table puts the $10,298 system at $0.17 per lifetime kWh against the Apex 300's $0.10, so the cheaper box is also the cheaper one to own, which is worth understanding before it decides anything.
cost / lifetime kWh
Seven cents separates these two on cost per lifetime kilowatt-hour, $0.17 against $0.10, and it runs to the smaller unit. Scale is why: that $0.17 is priced against 59,520 kWh of throughput, which is 9,920Wh × 6,000 cycles, while the Apex 300's entire lifetime is 16,589 kWh on the same 6,000-cycle rating. The row compares two appliances that happen to share a unit of measure.
Cost per warranty year is the line to actually use: $340 against $1,030. It assumes nothing about how much energy you move, and it says the thing the cent per kWh hides, which is that one of these is a purchase and the other is a project.
Growth Path
Selected because: Both expand; what differs is the price of the next step, around $699 for the Apex 300's parallel box, and whether the EP900 + 2×B500's 9,000W solar ceiling is a solar figure at all.
solar input
The growth recommendation here leans on the EP900's 9,000W solar ceiling against the Apex 300's 2,400W. Handle that 9,000 with tongs. It is the identical number vendor material gives for the EP900's inverterB1, which is what a PV-input field looks like when it has been filled in from the wrong spec, and our own sheet lists the system's output as 7,600W. The payload does not agree with itself about what 9,000W describes, so let nothing on this page be decided by it.
The Apex's growth path has a price tag instead of an ambiguity: about $699 for the Hub A1 parallel box if you want a second unit alongside the firstA12, and about $300 for the hub that adds DC and USB portsA7A11. On that second one, the disclosure matters more than the argument. Our spec sheet lists a 100W USB-C output on the Apex while a reviewer says the face carries no DC or USB at allA7. We cannot settle it, so buy neither unit on port count. The parallel arithmetic is the useful part: two Apex 300s plus that box is $1,699 × 2 + $699 = $4,097 for 5,529.6Wh, which clears the 4,685Wh day a single Apex misses. It still is not a wired house.
Strengths & trade-offs
BLUETTI Apex 300
Strengths
- +Costs $8,599 less
- +Lighter by 259.2 lb
Trade-offs
- –Weaker inverter (-3,760W) limits appliance compatibility.
- –Very heavy unit that may be difficult for one person to lift.
BLUETTI EP900 + 2×B500
Strengths
- +Larger battery capacity
- +Higher AC output
- +Longer warranty
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$8,599) than the Apex 300.
- –Significantly heavier (+259.2 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
2,100Wh against the Apex 300's 2,350Wh usable leaves 250Wh in hand. It passes, and it passes thin, which makes this the one row where an unplanned cold night actually costs you something. The EP900 + 2×B500 finishes at 25%, which is what 9,920Wh does to a 2,100Wh weekend.
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
EP900 + 2×B500
Both cover the 1,645Wh. The Apex 300 does it with 705Wh left, and since 1,645Wh over eight hours averages about 206W, that spare is roughly three more hours at the same draw. The EP900 + 2×B500's 6,787Wh remaining is a second night and most of a third. Which of those you need is a question about your grid, not about these two boxes.
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
Apex 300
A 320Wh night uses 14% of the Apex 300 and 4% of the EP900 + 2×B500, so capacity settles nothing. Placement does. The Apex goes in the bedroom; 343 lb of installed system goes wherever it was installed, which is why this row belongs to the smaller unit. At 2,350Wh usable against 320Wh a night, the Apex is about seven nights of CPAP on one charge.
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
EP900 + 2×B500
910Wh is 39% of the Apex 300 and 11% of the EP900 + 2×B500. Both run the day; one runs the week. Neither unit is being stressed here, so this row is about what is left on Friday, not about whether Monday works.
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
670Wh is the lightest load on the page, 29% of the Apex 300 and 8% of the EP900 + 2×B500. Both do it without noticing. If you want a row that actually tests the smaller unit, use the 250Wh-spare camping weekend instead.
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
This is the only row that separates them. 4,685Wh against the Apex 300's 2,350Wh usable is a 2,335Wh shortfall, which is a capability gap and not a matter of being careful with what is left. The EP900 + 2×B500 finishes the day at 56% with 3,747Wh spare, and that is the single strongest argument for spending $10,298 instead of $1,699.
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: EP900 + 2×B500 runs 41.1h vs 11.5h.
$10,298 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 0–562.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–112.4hHigh-Draw Appliances
These reveal the real limitsscale 0–8.4h¹ 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
August 9, 2026
Verdict: the BLUETTI Apex 300
Buy the Apex 300 unless your worst day runs past its 2,350Wh usable. Five of the six loads on this page fit inside that budget: 2,100Wh camping, 1,645Wh blackout, 910Wh workday, 670Wh tailgate, 320Wh CPAP. The exception is Van Life Daily at 4,685Wh, where the Apex is 2,335Wh short and nothing recovers it. If that is your normal day, or if you are already committed to wiring work and this is one line on a bigger invoice, the EP900 + 2×B500 is the right hardware and $10,298 is what it costs. Otherwise you are spending $10,298 rather than $1,699, a difference of $8,599, for headroom on loads the cheaper unit already covered.
Today the Apex 300 is $1,499, $200 under its typical $1,699. The verdict weighs typical prices, not today's. Prices checked 1 day ago.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of August 9, 2026. The links below open BLUETTI's current price.
$1,499.00 · direct from BLUETTI
down from $1,699 · 12% below usual
Last checked 1 day ago. Prices move — check before you buy.
or check the EP900 + 2×B500 price$10,298.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated August 9, 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, Solar Generator.
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 rates 5.0/5 (99th percentile of 26 Large-class units), and EP900 + 2×B500 rates 3.7/5 (21st percentile of 29 Whole-Home / Off-Grid-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.
343 lb Is a Delivery, Not a Lift
The Apex 300's 83.8 lb is one object with handles: awkward, solo-possible, and something you will think about twice on stairs. The 343 lb on the other side is a system total covering an EP900 inverter and two B500 modules, and there is no per-box figure anywhere in our data, so read it as a floor-plan decision. You move the Apex. You site the EP900.
45dB Against 50dB, With No Load Attached
Both numbers are single ratings with nothing stated about what the unit was doing at the time, so take them as character rather than measurement. 45dB is not a disqualifying figure for sleeping in the same room, and while 50dB is the louder of the two, the EP900 + 2×B500 is a system that gets installed somewhere. Where it ends up will change what you hear far more than five decibels will.
Warranty: 10 Years vs 5
The EP900 + 2×B500 is covered for 10 years against the Apex 300's 5 years. The cheaper Apex 300 does buy more warranty per dollar (2.9 years per $1,000 against 1), but that is a statement about price, not about coverage — if a fault appears in year 6, only one of these is still covered. 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. An underrated factor if you're keeping this unit for years.
Full record above — the Test Desk pick is the Apex 300.
Check Apex 300 price →or check the EP900 + 2×B500 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 $0.1/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner. One thing to know reading the table: both carry the same 6,000-cycle rating, so the lifetime rows are sticker price and capacity in disguise — the wear horizon is identical and decides nothing here.
Growth path
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.
EP900 + 2×B500
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 9,920Wh.
Accepts up to 9,000W 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, but the EP900 + 2×B500's higher solar ceiling (9,000W vs 2,400W) 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.
BLUETTI Apex 300
The Apex 300's public record is short and it is mostly about software. Owners on BLUETTI's own forum describe a firmware update leaving the unit stuck in Backup mode with the app refusing to change it backA1, and another update that stopped charging at 97% and threw Error 004A2. A Home Assistant user lost Bluetooth after the same update cycleA3, and one owner gets a permanent update prompt that resolves to already up to dateA4. Four separate people, one theme: the updates are the risk surface.
Everything else comes from press units rather than long-term owners. A reviewer rated the fans tame next to units that howl under loadA5, another could barely move it and could not lift it onto a tableA8, the app is called sluggish against EcoFlow's and Anker'sA10, and the port bungs are praised for a utility-room install and cursed for oversized plugsA9. One wrinkle before you weigh the handling comments: several of them come from a review of the Apex 300 with a B300K expansion battery attachedA5A6A7, which is a heavier machine than the 83.8 lb this page prices. Nothing on cold weather, idle drain, or year-two behaviour exists yetA1A5.
“I was using Bluetti-bt until the latest Bluetti firmware update. I then started having disconnects.”
BLUETTI EP900 + 2×B500
There is no owner record for this system in our ledger. All four entries are vendor or vendor-adjacent: the 9,000W whole-home framing with its washer, dryer, heater and refrigerator listB1, the expansion story from 9.9kWh to about 39.6kWhB2, the 10ms transfer described as unnoticeableB3, and a complete-system cost of roughly $14,500-$15,000 excluding installationB4. That is useful for understanding what BLUETTI is selling. It is not evidence that it holds up.
The same material is written for the EP900 platform in general rather than the two-battery configuration on this page. B2's 39.6kWh ceiling needs eight B500 modules and B1's 18,000W needs a second inverterB1B2, and neither is what $10,298 buys here. B4's $14,500-$15,000 describes a bigger system than this one, quoted before an installer has been paidB4. Take the price on this page as hardware and assume there is a second number you have not been shown.
“A whole-home system: one EP900 inverter provides up to 9,000W (18,000W with two units), enough to run a washer, dryer, heater, and refrigerator.”
Sources
bluettipower.com · bestgeneratorsolar.com · mightygenerators.com · bgr.com · offgridsource.com
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- 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]
- Whole-home 9,000W output, large B500 expandability (to ~39.6kWh), 10ms UPS, and solar off-grid capability are the standout features. [EP900 + 2×B500 · 3 entries]
- A1
“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]
- A2
“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]
- A3
“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]
- A4
“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]
- A5
“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]
- A6
“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]
- A7
“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]
- A8
“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]
- A9
“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]
- A10
“The Bluetti app is still a little sluggish compared to the EcoFlow or Anker apps, but it lets you toggle power modes, monitor stats, and tweak settings from a distance.”
TheSolarLab — 'Bluetti Apex 300 Review: Cheap, Practical Home Backup?' · unknown · [mixed]
- A11
“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]
- A12
“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]
- B1
“A whole-home system: one EP900 inverter provides up to 9,000W (18,000W with two units), enough to run a washer, dryer, heater, and refrigerator.”
bluettipower.com / bestgeneratorsolar.com — EP900 + B500 guide · 2026 · [positive]
- B2
“With B500 batteries (4,960Wh each), capacity expands from 9.9kWh up to about 39.6kWh with eight B500 modules — weeks of essential backup.”
bluettipower.com / mightygenerators.com — EP900 + B500 · 2026 · [positive]
- B3
“A fast UPS switches from grid to battery within 10 milliseconds; one owner reported the transfer is completely unnoticeable during outages.”
bgr.com / owner review — EP900 + B500 · 2026 · [positive]
- B4
“Built on reliable LiFePO4 cells; tied to solar, an owner said they can virtually go off-grid and minimize utility bills. Complete systems run roughly $14,500-$15,000 excluding installation.”
bgr.com / offgridsource.com — EP900 + B500 review · 2026 · [positive]
Research compiled August 9, 2026.
Who Should Buy Which
Buy the Apex 300 if you…
- →Your worst day lands under 2,350Wh usable and you want it covered for $1,699. Three of this page's six loads finish at 39%, 29% and 14% of the Apex, which is not a unit under strain.
- →You rent, or you are not cutting into a wall you do not own. The Apex plugs in. The EP900 gets installed.
- →You want backup that can move with you, to a new apartment, a job site, or a friend's house during an ice storm. The Apex moves with two hands and a hand truck. An inverter and two battery modules move with a crew.
Buy the EP900 + 2×B500 if you…
- →Your real day is the 4,685Wh one and you are not willing to be 2,335Wh short of it. That is the single thing on this page $10,298 buys and $1,699 cannot.
- →You already have electrical work underway, and this is one line item in a project rather than the whole purchase. Get the installed figure first, then compare prices.
- →You want 9,920Wh in one system and a 10-year warranty on hardware that will sit in one spot for a decade, and $1,030 per warranty year is a number your budget absorbs.
If neither fits
If you want something you can genuinely carry, up stairs or into a tent, neither of these qualifies. The Apex is the lighter one at 83.8 lb and a reviewer still could not get it onto a tableA8. Buy a unit you can lift one-handed and accept the smaller battery. And if your goal is real whole-home independence, this two-battery bundle is not the endpoint either. The platform's own material describes stacking to about 39.6kWh across eight B500 modulesB2, so price that configuration with an installer rather than treating $10,298 as the ticket.
The Bottom Line
Take the Apex 300. The EP900 + 2×B500's five scenario wins are four races the Apex also finishes plus one it genuinely cannot, the 4,685Wh van-life day, and $10,298 against $1,699 is a steep price for one row. If that row is your Tuesday, buy the EP900 and get the install quoted before you call this a price comparison.
The rest follows from what these two objects are. One weighs 83.8 lb and you decide where it goes. The other is 343 lb of inverter and batteries that goes where it is installed and stays there, with a second invoice attached. Buy the Apex until your worst day outgrows 2,350Wh usable.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EP900 + 2×B500 worth $10,298 when the Apex 300 is $1,699?
Only if your daily need runs past what the Apex covers. On this page the Apex handles five of six loads on 2,350Wh usable and misses one, the 4,685Wh day it is 2,335Wh short of. The EP900 answers that day, and it brings a 10-year warranty against 5 years. What it does not bring is more cycles, since both are rated 6,000, or a faster grid transfer, since both are listed at 10ms.
Can I just buy two Apex 300s instead?
On capacity, yes. Two Apex 300s are 5,529.6Wh (2 × 2,764.8Wh), which clears the 4,685Wh day one unit misses, and linking them takes BLUETTI's Hub A1 parallel box at around $699. Call it $4,097 all in, from $1,699 × 2 + $699. What it does not give you is a wired system, which is what the EP900 is sold as, an inverter sized to run a washer, dryer, heater and refrigerator.
Does the EP900 + 2×B500 need professional installation?
Our data does not state a requirement, but everything around it points that way. It is 343 lb spread across an inverter and two B500 modules, and vendor material quotes complete EP900 systems at roughly $14,500-$15,000 explicitly excluding installation. The $10,298 on this page is hardware. Get the rest quoted before you compare it to anything.
Will the EP900 really last 16 years?
That 16.4-year figure is the 6,000-cycle rating read as one full discharge a day, and a full discharge means 9,920Wh. Almost nobody empties a system that size daily, so treat the cycle count as a durability rating rather than a calendar: 6,000 on both units, with roughly 80% of original capacity still there at the end of either. The same arithmetic is what produces the 58-years-at-weekend-use line, which you should not plan around.
Where to buy
BLUETTI Apex 300Pick
$1,499.00
$1,499.00 · direct from BLUETTI
down from $1,699 · 12% below usual
Last checked 1 day ago. Prices move — check before you buy.
BLUETTI EP900 + 2×B500
$10,298.00
$10,298.00 · direct from BLUETTI
Last checked 1 day ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.