Head-to-head test
BLUETTI Apex 300 + B300K vs Goal Zero Yeti PRO 4000
$0.47 per watt-hour against $1.00 — the Apex 300 + B300K stores 38% more energy for $1,401 less, and the Yeti PRO 4000's only real receipt in return is 33.1 fewer pounds.
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
Goal Zero
Yeti PRO 4000
5,423Power Score · The AC & Fridge Zone
$3,999.95 list · direct from Goal Zero
Spec deltas
The Apex 300 + B300K stores 5,529.6Wh for $2,599; the Yeti PRO 4000 stores 3,994Wh for $3,999.95. That's 1,535.6Wh more energy for $1,400.95 less — the Bluetti wins on both axes of the only equation that matters at checkout.
The per-watt-hour math makes it starker: $0.47/Wh for the Apex against $1.00/Wh for the Yeti. Over a 5-year warranty, that works out to $520 a year for the Bluetti and $800 a year for the Goal Zero.
The Yeti isn't a bad machine — it's 33.1 lbs lighter, its cycle count runs higher (4,000 vs 3,500), and its solar input tops out at 3,000W against the Bluetti's 2,400W. None of that offsets storing 38% less energy for over a thousand dollars more.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
A buyer who picks the Yeti isn't paying a premium for more capability per dollar; they're paying more per dollar for less total energy. That only makes sense if something other than capacity or cost is the deciding factor.
Apex 300 + B300K costs $0.47 per WhYeti PRO 4000 costs $1.00 per WhApex capacity is 5,529.6Wh against the Yeti's 3,994Wh
Why it mattersUnless weight or brand support is the actual constraint, there's no capacity or budget scenario where the Yeti PRO 4000 is the rational buy over the Apex 300 + B300K.
The Apex clears that same load with its whole pack used and nothing held in reserve, which means daily-cycle buyers aren't just paying more for the Yeti — they're buying a unit that structurally can't finish the day they bought it for.
Van Life Daily needs 4,685Whthe Apex covers it at exactly 100% of its own capacitythe Yeti PRO 4000 can't handle it at 138% of its own capacity
Why it mattersAnyone whose daily energy use runs above roughly 4,000Wh should rule out the Yeti PRO 4000 on capacity alone, independent of price.
solar input
A lighter unit with faster solar input matters most to someone recharging off-grid and relocating the unit often; it does nothing for the cost-per-kWh math, which still runs more than double in the Yeti's favor.
the Yeti PRO 4000 weighs 115.7 lbs against the Apex 300 + B300K's 148.8 lbsreviewers describe the stacked Apex + B300K as movable with built-in handles or a trolley but not something you'd casually lug to a picnicA5the Yeti PRO 4000's solar input is 3,000W against the Apex's 2,400W
Why it mattersBuyers who genuinely relocate their power station often — overlanding, frequent van moves — should weigh the Yeti's lighter build against everyone else, who should bank the $1,400.95 in savings instead.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: Roughly 2x gap in cost per lifetime kWh is the headline number.
cost / lifetime kWh
$0.13 per lifetime kWh for the Apex 300 + B300K, $0.25 for the Yeti PRO 4000. Annualized over the shared 5-year warranty, that's $520 versus $800 — a $280-a-year gap that adds up to $1,400 over the warranty period alone, before either unit has even needed a repair.
The Yeti's higher cycle count (4,000 vs 3,500) narrows the gap slightly but doesn't close it: more cycles on a smaller, pricier pack still loses to fewer cycles on a bigger, cheaper one at these numbers.
Portability & Form Factor
Selected because: 33.1 lb weight gap is the Yeti's one clear structural win.
weight
115.7 lbs for the Yeti against 148.8 lbs for the Apex — a real 33.1 lb difference, roughly a large checked suitcase's worth. If you're the one lifting it alone regularly, that's the Yeti's strongest argument on this page.
It's still not a one-person carry at either weight. Reviewers describe the stacked Apex system as manageable with handles or a trolley but not something you'd casually lug anywhereA5 — the honest read is that both units live in one spot most of the time and get moved rarely, which shrinks how much the weight gap actually matters day to day.
Your Life, Your Pick
Selected because: Van Life Daily is where the Yeti's smaller pack actually falls short.
Weekend Camping, the 8-Hour Blackout, and Van Life Daily all go to the Apex — the first two on cost efficiency, the last on raw capacity. At 4,685Wh needed, Van Life Daily uses 138% of the Yeti's own capacity, meaning it can't complete that load without a recharge; the Apex uses exactly 100% of its own pack and finishes with nothing left over.
The smaller scenarios — CPAP Overnight, Remote Workday, Tailgate Party — are a wash; both units have capacity to spare and the win is listed as both. Capacity only becomes the deciding factor once daily use climbs into van-life territory.
Brand Trust
Selected because: Goal Zero's premium pricing and declining support trend are worth surfacing against Bluetti's inconsistency.
Goal Zero is priced as the premium brand and its reputation still trades on that, but 2025-2026 reports describe long support wait times and unanswered tickets — the same 'premium support justifies premium pricing' case is getting harder to make. Bluetti's support is the more openly inconsistent of the two, heavily email-based with timezone delays, though buying direct tends to produce better outcomes.
Neither company's support is a clean win right now. Given that, the $1,400.95 price gap is doing more real work in this decision than either brand's customer-service reputation.
Strengths & trade-offs
BLUETTI Apex 300 + B300K
Strengths
- +Costs $1,400.9 less
- +Larger battery capacity
- +Higher AC output
Trade-offs
- –Significantly heavier (+33.1 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
Goal Zero Yeti PRO 4000
Strengths
- +Lighter by 33.1 lb
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$1,400.9) than the Apex 300 + B300K.
- –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 + B300K
The Yeti PRO 4000 cuts it close at 62%. 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 Yeti PRO 4000 at 48% 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 9% 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 Yeti PRO 4000 runs out of juice. It only has 3,395Wh 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 16.6h.
$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
The Apex 300 + B300K is the buy for almost everyone. It costs $1,400.95 less ($2,599 vs $3,999.95), stores 1,535.6Wh more (5,529.6Wh vs 3,994Wh), and its lifetime cost per kWh is $0.13 against the Yeti's $0.25 — essentially half. The Yeti PRO 4000 answers back with 33.1 fewer pounds and a Goal Zero pedigree, but neither closes a gap this size. Take the Yeti only if the 148.8 lb Apex genuinely won't fit your vehicle or your back, or if American-based support outweighs a four-figure price gap for you.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 15, 2026. The links below open BLUETTI's and Goal Zero's current prices.
$2,599.00 list · direct from BLUETTI
or check the Yeti PRO 4000 price$3,999.95 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): 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 Yeti PRO 4000 rates 3.8/5 (27th 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 Yeti PRO 4000 (115.7 lbs) is a two-person lift. 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 33 lb difference.
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.
Yeti PRO 4000: Noise Level Not Disclosed
The Apex 300 + B300K publishes its noise level (45dB), but the Yeti PRO 4000 doesn't. Brands that don't disclose noise specs often have louder units. If noise matters to you (CPAP users, apartment dwellers), this is worth investigating before buying.
Full record above — the Test Desk pick is the Apex 300 + B300K.
Check Apex 300 + B300K price →or check the Yeti PRO 4000 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 + B300K 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.
Delivers each lifetime kWh for $0.12 less — check the Apex 300 + B300K price →
Brand trust
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.
Goal Zero
Ecosystem
Focused — 5-6 active portable power station models across Yeti and Yeti Pro series, plus Alta coolers, Nomad/Ranger solar panels, and vehicle integration kits
Support
US-based company (Salt Lake City, owned by NRG Energy). Historically considered premium support, but 2025-2026 reports describe long wait times, unresponsive email communication, and tickets going unaddressed for weeks. The "premium support justifies premium pricing" argument is weakening.
Community
Small but loyal — strong following in overlanding and preparedness communities. Official community forums were recently shuttered, frustrating long-time users.
App experience
Rated 4.4/5 iOS (~1,200 ratings) but recent reviews skew negative — recurring connectivity issues, crashes, and stability problems.
Unique strength
Pioneer of the portable power market — strongest brand heritage. US-based company with ruggedized, weather-resistant designs (IPX4). Integrated "Yeti-Ready" ecosystem with coolers, lights, and vehicle kits.
Worth knowing
Widely acknowledged as the most expensive brand (lowest Wh per dollar). Support quality has declined from its "premium" standard. Perceived as competitively stagnant vs. faster-innovating Chinese competitors. Reliability reports on newer models are concerning.
Analyst note
Goal Zero positions itself as a premium brand with stronger support infrastructure, while BLUETTI competes on value. The question is whether the Goal Zero ecosystem and support premium is worth it for your use case.
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.
Yeti PRO 4000
EXPANDABLESupports Goal Zero expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,994Wh.
Accepts up to 3,000W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are Goal Zero-specific. You're investing in the Goal Zero ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, so neither locks you out of growth — decide on capacity, price, and the rest, not the expansion checkbox.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
BLUETTI Apex 300 + B300K
Stacked, the Apex 300 + B300K comes in near 150 lbs of lithium iron phosphate and inverter — movable with the built-in handles or a trolley, but reviewers are blunt that it's not something you'd casually lug to a picnicA5A14. This reads as a fixed-spot unit more than a grab-and-go one.
Where it earns its keep is heavy loads: it's been called one of the few systems that could genuinely replace a generator, without the noise, fumes, or maintenanceA4, and the base unit's lack of built-in USB or DC ports — pushing buyers toward a separate Hub D1 accessory — is the most consistent complaint against itA1A2.
“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
Goal Zero Yeti PRO 4000
The Yeti PRO 4000's build quality draws consistent praise — reviewers call it one of the most durable units they've tested, backed by American-based support and a strong app, and note its 3,000W solar input can recharge the unit from empty in under two hours off-gridB1B2.
Reliability reports from owners are more mixed than the professional reviews. Some describe 12V errors, including one unit that had to be returned and a second that wouldn't charge from solarB3 — worth flagging even though this ledger is thin overall and doesn't yet include long-term, 6-month-plus reports.
“Weighs about 115.7 lbs — a two-person unit to move — with one of the most durable builds reviewers have seen, backed by American-based support and a great app.”
Sources
bestgeneratorsolar.com · thesolarlab.com · goalzero.com · business.walmart.co · techradar.com · cleantechnica.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
- 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]
- Strong solar input, a great app, American-based support, and a durable build are the praise; heavy weight and some owner reliability reports (12V errors) are the caveats. [Yeti PRO 4000 · 3 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]
- A5
“Stacked, you're near 150 pounds of lithium iron phosphate and inverter muscle—movable with the built-in handles or a trolley... but not something you'll casually lug to a picnic.”
techspective.net — Bluetti Apex 300 with B300K Review · 2025-09-21 · [mixed]
- A14
“As will you: it weighs in at 38kg, and is probably much too big and heavy for most people to carry alone.”
trustedreviews.com — Bluetti Apex 300 Review · 2025-10-10 · [negative]
- B1
“Weighs about 115.7 lbs — a two-person unit to move — with one of the most durable builds reviewers have seen, backed by American-based support and a great app.”
bestgeneratorsolar.com / thesolarlab.com — Yeti PRO 4000 review · 2026 · [mixed]
- B2
“3,000W solar input recharges 0-100% in under 2 hours off-grid, with impressive surge and idle efficiency; fully expandable.”
goalzero.com / thesolarlab.com — Yeti PRO 4000 review · 2026 · [positive]
- B3
“Owner reliability is mixed — some report 12V errors, including a first unit returned or replaced and a second that had a 12V error and would not charge from solar.”
business.walmart.com reviews / oliver owner forums — Yeti PRO 4000 · 2026 · [negative]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the Apex 300 + B300K if you…
- →Anyone whose daily or weekend energy use runs close to or above 4,000Wh — van lifers, weekend campers running a fridge and devices — where the Apex's bigger pack and lower cost per kWh both matter.
- →Budget-conscious buyers who want the most stored energy per dollar: $0.47/Wh is roughly half the Yeti's $1.00/Wh.
Buy the Yeti PRO 4000 if you…
- →Buyers who move the unit often and feel every pound — overlanders, frequent van reconfigurations — where 33.1 fewer lbs and 600W more solar input have real day-to-day value.
- →Buyers who specifically want US-based support and a company with the longest track record in this category, and are willing to pay roughly double per watt-hour for it.
If neither fits
If your heaviest regular load is under 1,000Wh — phone, laptop, small CPAP — both of these are oversized and overpriced; a compact 1,000-2,000Wh station will cover it for a fraction of either price.
The Bottom Line
Buy the Apex 300 + B300K. It stores 1,535.6Wh more energy for $1,400.95 less, and its lifetime cost per kWh runs roughly half the Yeti PRO 4000's.
The Yeti earns its keep only for buyers who move the unit constantly and feel every one of those 33.1 pounds, or who need US-based support badly enough to pay double per watt-hour for it. Everyone else is better off banking the savings.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the Apex 300 + B300K or the Yeti PRO 4000 the better value?
The Apex 300 + B300K is the clear value pick. It costs $1,400.95 less, stores 1,535.6Wh more, and comes out to $0.13 per lifetime kWh against the Yeti's $0.25 — roughly half. The Yeti's advantages are 33.1 fewer pounds and faster solar input, not price or capacity.
Can the Yeti PRO 4000 handle daily van life use?
Not comfortably on its own. A typical Van Life Daily load of 4,685Wh comes out to 138% of the Yeti's 3,994Wh capacity, meaning it can't finish that load without a mid-day recharge. The Apex 300 + B300K's 5,529.6Wh pack covers the same load at exactly 100%.
Why is the Yeti PRO 4000 so much more expensive per watt-hour?
The Yeti PRO 4000 runs $1.00 per watt-hour against the Apex 300 + B300K's $0.47, largely reflecting Goal Zero's premium brand positioning rather than a spec advantage — the Apex actually stores more total energy for less money.
Which one is lighter to move around?
The Yeti PRO 4000 weighs 115.7 lbs against the Apex 300 + B300K's 148.8 lbs — a 33.1 lb gap, roughly a full checked suitcase. Neither is a one-person carry for long distances, but the Yeti is the easier of the two to shift.
Are there reliability concerns with either unit?
Some Yeti PRO 4000 owners report 12V errors, including a unit that had to be replaced, though professional reviewers didn't encounter the same issues. The Apex 300 + B300K's field data is still thin since the bundle is new, but reviewers consistently note the base unit ships without USB/DC ports.
Related comparisons
Where to buy
BLUETTI Apex 300 + B300KPick
$2,599.00
$2,599.00 list · direct from BLUETTI
Goal Zero Yeti PRO 4000
$3,999.95
$3,999.95 list · direct from Goal Zero
Prices may vary by retailer and are subject to change.