Bluetti Apex 300
- AC delivered · measured
2,565 Wh. Show source
verified source~2,550-2,580 Wh delivered (Trusted Reviews, ~92-93.5% at load)2026-07-04- output
3,840 W. Show source
claimed sourcebluettipower.com ↗- surge
7,680 W. Show source
claimed sourcebluettipower.com ↗- weight
38 kg. Show source
claimed sourcebluettipower.com ↗
Excellent
#2 of 13
in the XL / home-backup class
Lifted by Durability & longevity and Charging & solar; held back by capacity & expansion.
Check current availability and pricing at the retailer.
Check price on AmazonSee alternatives to the Bluetti Apex 300 →At a glance
Bluetti Apex 300 is a xl / home-backup model best suited to cpap traveler. It supplies 3,840 W of continuous AC output. BatteryRank scores it 71 out of 100 within its size class.
Our verdict on the Bluetti Apex 300
The Apex 300 is bought for its inverter, not its battery. 3,840 W continuous with a 7,680 W surge ceiling and true 240 V split-phase output puts it in a different class from the 2,000-3,000 W units it sits beside on capacity, and the 2,764.8 Wh pack is the smallest part of the story — it expands to 19,000 Wh, nearly seven times the base unit. Treat the base configuration as an inverter with a starter battery attached, and the 0 ms UPS switchover as the reason to wire it into something that must not blink.
- You have a 240 V load — a well pump, a mini-split, a compressor — and no other way to run itTrue split-phase output is rare below the flagship tier, and the 3,840 W continuous rating carries a 7,680 W surge ceiling, which is the figure that decides whether a motor breaks away from standstill rather than tripping the inverter.
- You want to start small and grow into whole-home reserveThe 19,000 Wh expansion ceiling is nearly 7x the 2,764.8 Wh base, so the buying decision is a battery-at-a-time one rather than a single 19 kWh commitment up front.
- Something on the circuit must not lose power even momentarilyThe sourced 0 ms UPS switchover means the transfer is genuinely uninterrupted rather than a fast reconnect, which matters for equipment that reboots on a 20 ms gap.
- You are buying it to run 12 V gear from the unit itselfThe base unit ships 0 regulated DC sockets. The 12 V cigarette socket and 50 A Anderson terminals that appear in most photography belong to the optional Hub D1, not the Apex 300 — a distinction we had wrong on this page until 2026-07-28. The RIVER 3 carries a 12 V car socket on the unit itself, with nothing to add.
- It has to be carried, or moved by one person regularlyAt 38 kg this is a two-person lift or a wheeled one, and it is roughly 8x the mass of a sub-5 kg portable. It is equipment you site once, not gear you pack. The RIVER 3 Plus is 4.72 kg — a genuine one-hand carry, at the cost of almost all of the output.
The honest limit: The 19,000 Wh headline is an architecture, not a product you receive. Reaching it means buying expansion batteries whose combined cost dominates the system, and each one adds mass to something already at 38 kg. The honest reading is that the expansion ceiling tells you the unit will not become the bottleneck, not that anyone should plan to reach it.
What our data can’t tell you: We have no sourced AC recharge time for this unit — the field is blank in our dataset rather than estimated, so any recharge figure you see elsewhere did not come from us. Its 2,400 W solar input is sourced but we have no measured noise ceiling, which is the field most likely to matter if it lives indoors near where anyone sleeps.
- — Corrected the DC output fields. We had recorded a 12 V cigarette socket and 50 A Anderson terminals as built in; both belong to the optional Hub D1. Base unit DC sockets are now 0, and the unit no longer appears in RV rankings that require a 12 V rail.
BatteryRank Engineering Team · Last reviewed · Method
Capacity truth
The watt-hour number on the box isn't what reaches your devices. Rated on the label vs what actually leaves an outlet.
2,764.8 Wh. Show source
claimed sourcebluettipower.com ↗2026-07-04The marketing number — total cell capacity.
2,550–2,580 Wh. Show source
verified source~2,550-2,580 Wh delivered (Trusted Reviews, ~92-93.5% at load)2026-07-04~2,550-2,580 Wh delivered (Trusted Reviews, ~92-93.5% at load) · 7% below the label
Also independently measured
- AC inverter efficiency
92 %. Show source
verified source92% full load / 93.5% peak at 2kW; ~75.6% AC round-trip (Trusted Reviews)2026-07-04- Fan noise
38 dB. Show source
verified source38 dB moderate to 42 dB full 3840W load (HomeAndGardenByElise)2026-07-04- AC charge time
95 min. Show source
verified source~95 min Turbo / ~120 min standard (Trusted Reviews)2026-07-04- Solar performance
—. Show source
verified sourceTrusted Reviews flags ~48% battery drain over 12h in time-of-use mode (high self-consumption) and poor ~50% Silent-mode efficiency2026-07-04
92% full load / 93.5% peak at 2kW; ~75.6% AC round-trip (Trusted Reviews)
38 dB moderate to 42 dB full 3840W load (HomeAndGardenByElise)
~95 min Turbo / ~120 min standard (Trusted Reviews)
Trusted Reviews flags ~48% battery drain over 12h in time-of-use mode (high self-consumption) and poor ~50% Silent-mode efficiency
What it can run
Same sourced device assumptions used by our calculators, applied to this model's usable AC energy. Actual runtime varies with load, temperature, and standby draw.
| Device | Estimated runtime | Sourced assumption |
|---|---|---|
| CPAP (humidifier off) | about 35.6 nights | 9 W · |
| CPAP (heated humidifier on) | about 5.7 nights | 56 W · |
| Refrigerator (full-size) | about 41 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 143 hours | 18 W · |
| Laptop (65W charger) | about 79 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 128 full charges | 20 W · |
Who it fits
Mechanical matches against this model's own sourced specs — never invented sentiment, never a guess on a spec we don't have.
2565 Wh AC-delivered (measured) → multiple CPAP nights per charge
3840 W inverter, 2565 Wh AC-delivered (measured) → runs a fridge through an outage
2764.8 Wh, expandable → long off-grid stays
How it scores
Four buyer pillars over seven sub-scores — computed from sourced data with a published formula, price-independent by design.
Power
Battery-side usable capacity and how much you can run at once.
Usable watt-hours and how far you can grow it with add-on batteries, versus its size class.
Continuous and surge wattage, outlet count, and USB-C fast-charging.
Trust
Owner reputation, safety record, warranty, and build durability.
Owner ratings, brand reputation, recall record, and warranty backing.
Rated cycle life, warranty length, cell chemistry, and weather sealing.
Charging
est.Wall and solar recharge speed.
Wall recharge speed, solar input, and multi-source charging.
Livability
Lightweight, portable, and quiet enough to live with.
Weight, footprint, handle, and wheels, versus its size class.
Fan noise under load — quieter is better for bedrooms and CPAP use.
How this score is computed
The BatteryRank score is computed from sourced data with a published formula — ranked by data, not lab testing. Seven sub-scores blend into a 0–100 composite, grouped into four buyer pillars. Price is deliberately not a scoring input: prices move daily, so value intelligence lives in the price section above, judged against this model's own history.
| Pillar | Built from |
|---|---|
| Power | Capacity & expansion + Output & versatility |
| Trust | Trust & reliability + Durability & longevity |
| Charging | Charging & solar |
| Livability | Portability + Quiet / livability |
Scores are cohort-relative — each model is ranked against others in its size class. Missing inputs renormalize out rather than scoring zero (a model is never penalized for a spec nobody in its class publishes), and any figure resting on a documented estimate is tagged est. A full methodology page is coming.
Full specifications
Manufacturer-claimed unless marked verified (FCC/UL/DOE/lab). Tap or focus a figure to view its source.
Capacity & battery
- Battery-side usable capacity
2,764.8 Wh. Show source
claimed sourcebluettipower.com ↗- Rated cycle life
6,000 cycles. Show source
claimed sourcebluettipower.com ↗- Battery chemistry
LiFePO4. Show source
claimed sourcebluettipower.com ↗- Max capacity with expansion
19,000 Wh. Show source
claimed sourcebluettipower.com ↗- Rated capacity
2,764.8 Wh. Show source
claimed sourcebluettipower.com ↗- Cycle-life threshold
80 %. Show source
claimed sourcebluettipower.com ↗
Energy available from the battery before output-conversion losses. AC-delivered capacity is shown separately in Capacity Truth.
How many full charge-and-drain cycles before the battery drops to its rated threshold (shown alongside — brands rate to different thresholds, so never compare bare cycle counts).
The type of battery cell. LiFePO4 (LFP) cells last far more cycles and are more thermally stable than older lithium-ion (NMC) cells.
The largest total capacity this unit can reach once you add every supported expansion battery.
The battery's nameplate energy capacity — the headline number on the box. Battery-side usable and AC-delivered capacity are shown separately.
The remaining-capacity level the cycle rating is measured to. 3,000 cycles to 80% is a stronger battery than 3,000 cycles to 70% — always read the two numbers together.
Power output
- Continuous power output
3,840 W. Show source
claimed sourcebluettipower.com ↗- Surge power output
7,680 W. Show source
claimed sourcebluettipower.com ↗- AC outlets
6 outlets. Show source
claimed sourcebluettipower.com ↗- USB-A ports
2 ports. Show source
claimed sourcebluettipower.com ↗- USB-C ports
2 ports. Show source
claimed sourcebluettipower.com ↗- USB-C max output
100 W. Show source
claimed sourcebluettipower.com ↗- 12V car ports
0 ports. Show source
claimed sourcebluettipower.com ↗- DC barrel ports
2 ports. Show source
claimed sourcebluettipower.com ↗- Max combined output
3,840 W. Show source
claimed sourcebluettipower.com ↗
The most power you can draw at once, sustained — this has to be higher than the running wattage of whatever you're plugging in.
A brief power spike the unit can absorb when a device first switches on — matters for things with motors or compressors, like fridges.
How many standard wall-style outlets are built in.
How many USB-A ports are built in, for charging older phones, lights, and accessories.
How many USB-C ports are built in — check the per-port wattage below if you need fast charging for a laptop.
The fastest a single USB-C port can charge a device — relevant for laptops and fast-charging phones.
How many car-socket (cigarette-lighter) style 12V outputs are built in — what CPAPs and car fridges plug into for the most efficient overnight running.
How many round barrel-style DC outputs are built in, used by routers, some lights, and older electronics.
The most power the unit can deliver across ALL ports at the same time — can be lower than the AC rating plus every USB port added up.
Charging & solar
- AC recharge speed
3,840 W. Show source
claimed sourcebluettipower.com ↗- Max solar input
2,400 W. Show source
claimed sourcebluettipower.com ↗
How fast the unit recharges from a wall outlet — higher means shorter waits between uses.
The most solar panel wattage the unit can accept — undersized panels just mean slower charging, not damage, but oversizing this is wasted money.
Reliability & durability
- UPS switchover time
0 ms. Show source
claimed sourcebluettipower.com ↗
How fast the unit takes over when grid power cuts out. Under ~20ms is fast enough that most electronics — including many CPAP machines — won't even blip.
Size & portability
- Weight
38 kg. Show source
claimed sourcebluettipower.com ↗
How much the unit weighs on its own, without accessories — relevant for portability and carrying it up stairs during an outage.
What reviewers & owners report
Named outlets and marketplaces, each rating credited where it was published.
- True 120V/240V split-phase output + EV/whole-home capability — Across reviewers ·
- hugely modular (to ~19 kWh single, ~58 kWh linked, 11.5 kW) — Across reviewers ·
- strong ~92-93% output efficiency — Across reviewers ·
- 0ms UPS — Across reviewers ·
- 6,000-cycle LFP — Across reviewers ·
- good lifetime cost-per-kWh — Across reviewers ·
- Heavy (~84 lb, not truly portable) — Across reviewers ·
- high self-consumption in time-of-use mode (~48%/12h) — Across reviewers ·
- poor Silent-mode efficiency (~50%) — Across reviewers ·
- USB/DC ports need optional Hub D1 — Across reviewers ·
- premium price + costly to fully expand — Across reviewers ·
- Wirecutter: not a current pick / blocked to fetch
- Popular Mechanics: no dedicated review found
- None confirmed this pass — coverage still emerging for this 2025 flagship — YouTube reviewers ·
- no accessible measurement-channel review located — YouTube reviewers ·
Brand reputation: Too new (2025) for meaningful Reddit/forum history; Bluetti brand + LFP track record positive; no model-specific reliability concerns surfaced this pass
Sources: Trusted Reviews 4/5 (Recommended, 92-93.5% eff, 75.6% RT) https://www.trustedreviews.com/reviews/bluetti-apex-300; CNET blocked; Tom's Guide none; PCMag blocked; OutdoorGearLab none; Popular Mechanics none; TechRadar none; Wirecutter blocked; YouTube not retrievable; Reddit not retrievable; CPSC none (2026-07-04)
What else to consider instead of the Bluetti Apex 300
Same or adjacent size class, ordered by the price-independent composite. Every alternative is better than the Bluetti Apex 300 at something and worse at something else, so each row states both halves — each one arithmetic on two sourced readings, with a dimension skipped rather than guessed when either side is missing a figure.
- EcoFlow DELTA Pro 3score 76 · same size class
- Why you would switch
- The EcoFlow DELTA Pro 3 delivers 48% more usable AC energy (3,790 Wh vs 2,565 Wh).
- What you give up
- The Bluetti Apex 300 is 26% lighter (38 kg vs 51.5 kg).
- Jackery HomePower 3600 Plusscore 66 · same size class
- Why you would switch
- The Jackery HomePower 3600 Plus delivers 19% more usable AC energy (3,046 Wh vs 2,565 Wh).
- What you give up
- The Bluetti Apex 300 takes 140% more rated solar input (2,400 W vs 1,000 W) for off-grid recharging.
- Anker SOLIX F3800 Plusscore 65 · same size class
- Why you would switch
- The Anker SOLIX F3800 Plus delivers 27% more usable AC energy (3,264 Wh vs 2,565 Wh).
- What you give up
- The Bluetti Apex 300 is 39% lighter (38 kg vs 62 kg).
- Anker SOLIX F3800score 62 · same size class
- Why you would switch
- The Anker SOLIX F3800 delivers 27% more usable AC energy (3,264 Wh vs 2,565 Wh).
- What you give up
- The Bluetti Apex 300 is 37% lighter (38 kg vs 60 kg).
- Pecron E3600LFPscore 61 · same size class
- Why you would switch
- Nothing in the sourced data separates it from the Bluetti Apex 300 by a margin worth acting on.
- What you give up
- The Bluetti Apex 300 reaches a full AC charge in 43 minutes against 58.
Quick answers
Each answer restates a sourced figure from elsewhere on this page — nothing new, nothing guessed.
- How much does the Bluetti Apex 300 weigh?
- 38 kg (83.8 lb), manufacturer-claimed, without accessories.
- What are the dimensions of the Bluetti Apex 300?
- 525 × 327 × 320 mm (20.7 × 12.9 × 12.6 in), length × width × height, manufacturer-claimed.
- How much capacity does the Bluetti Apex 300 deliver through an AC outlet?
- About 2,565 Wh of the rated 2,764.8 Wh reaches an AC outlet from a full charge — measured in independent testing.
- How many watts can the Bluetti Apex 300 output?
- 3,840 W continuous AC output and 7,680 W surge output, manufacturer-claimed. Appliance startup demand must stay within the relevant limit.
- How much solar input can the Bluetti Apex 300 accept?
- 2,400 W maximum solar input, manufacturer-claimed. Actual harvest depends on panel compatibility, sun, orientation, temperature, and conversion losses.
- What is the cycle-life rating of the Bluetti Apex 300?
- 6,000 cycles to 80% remaining capacity, manufacturer-claimed. A cycle rating is not a calendar-life guarantee.
- Can the Bluetti Apex 300 work as a UPS?
- Its manufacturer-claimed transfer time is 0 ms. Confirm that your connected equipment tolerates that transfer time; this is not the same as a zero-transfer online UPS.
- How far can the Bluetti Apex 300 expand?
- Up to 19,000 Wh with compatible expansion hardware, manufacturer-claimed. The base-unit capacity and expansion-system capacity are shown separately.
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