Head-to-head test
BLUETTI AC50B vs DJI Power 500
For $60 more, the DJI Power 500 adds more capacity, more continuous output, a third more rated cycles, and a fan 20 decibels quieter — and it's still cheaper to run per kilowatt-hour, which leaves the AC50B with one honest argument: the lower sticker price.
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
BLUETTI
AC50B
1,983Power Score · Device Hub
$279.00 list · direct from BLUETTI
DJI
Power 500
2,341Power Score · Appliance Class
$299.00 list · direct from DJI
Spec deltas
Buy the DJI Power 500. It costs $359 to the AC50B's $299, and for that $60 it adds capacity, output, cycle life, and quiet operation all at once, four specs that usually trade off against each other in this category.
512Wh against 448, 1,000W continuous against 700, 4,000 rated cycles against 3,000, and a fan that measures 25dB against 45 — the Power 500 wins every one of those, and it still comes out cheaper to run per kilowatt-hour over its life. There's no honest case for the AC50B on capability alone.
The one real catch sits in the fine print: DJI's 300W solar rating needs a separate proprietary adapter the box doesn't include, something the AC50B's built-in 200W solar input doesn't require. Price that adapter in, and DJI's newness to the category, before assuming the $60 premium tells the whole story.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
$60 buys 64 more watt-hours and 300 more continuous watts in the same box, which isn't a typical trade the category offers. Most of the time a buyer picks one of those two specs to sacrifice; here neither is sacrificed.
DJI Power 500: $359, 512Wh, 1,000W continuousAC50B: $299, 448Wh, 700W continuousDJI costs $60 more
Why it mattersAnyone weighing these two on sticker price alone is missing the point — $60 is a small premium for gains on two specs that don't usually move together.
The AC50B's 1,000W surge is a brief cushion above its 700W continuous rating, good for a second or two of compressor startup. The DJI's 1,000W is what it sustains indefinitely, and testing found it holding a steady 905W load with headroom to spareB3.
DJI Power 500: 1,000W continuous, 1,000W surge — identicalAC50B: 700W continuous, 1,000W surgein testing the Power 500 ran a sustained 905W load and briefly handled a 1,500W surge, 50% above its own ratingB3
Why it mattersAnyone running a sustained load between 700W and 1,000W, not a brief motor jolt, gets real headroom only from the DJI.
rated cycles
A 20dB gap is roughly the difference between a quiet room and normal conversation, and 4,000 cycles against 3,000 is a third more life before the pack meaningfully fades.
DJI Power 500: 25dB noise, 4,000 rated cyclesAC50B: 45dB noise, 3,000 rated cycles
Why it mattersFor overnight, bedroom, or CPAP use where fan noise matters, and for anyone who'll cycle this battery for years, the DJI is ahead on both without a trade-off to point to.
A spec you have to buy separately to use isn't free, and DJI's newness to the category means there's no established third-party adapter market to shop around in yet. Budget for that adapter or the 300W number stays theoretical.
DJI Power 500: 300W rated solar input, no built-in solar charge controllerthe adapter needed to use solar is sold separately, not included in the boxone reviewer notes it ships with only a wall plug — no solar adapters or car-charging cables includedB4
Why it mattersAnyone planning to run this off solar from day one should price the adapter into the DJI's $359 before comparing it directly to the AC50B's built-in 200W solar input.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: $0.18 vs $0.22 per lifetime kWh, plus more capacity for $60 more upfront — the clearest value case on the page.
cost / lifetime kWh
The DJI wins this column outright and by a real margin: 18 cents per lifetime kilowatt-hour against 22 for the AC50B, on top of holding 64 more watt-hours for just $60 more upfront. That's more capacity, a cheaper running cost, and a higher cycle rating, 4,000 against 3,000, all in the same price.
There's no honest rebuttal here for the AC50B on cost alone — it's cheaper to buy, not cheaper to run. If sticker price is the hard constraint, the AC50B is the $299 answer; if total cost of ownership is what matters, the DJI wins by every measure on this table.
What the Specs Don't Tell You
Selected because: Noise, surge ratio, warranty, and cycle life all fire; three of four favor the DJI outright.
rated cycles
Four flags fire and three favor the DJI. Noise: 25dB against 45, a real gap, not a rounding error. Cycle life: 4,000 against 3,000, a third more charge cycles before the pack meaningfully fades. Surge ratio favors the DJI too — its 1,000W continuous rating already sits at the shared surge ceiling, so it never needs the surge window to reach full power the way the AC50B does.
Warranty is the one tie: five years on both. Weigh that against the AC50B's one honest edge, price, and the flags stack up heavily toward the newer, quieter, longer-lived unit.
Your Life, Your Pick
Selected because: Every scenario overloads both except CPAP, which the DJI wins on headroom and noise together.
Every scenario except CPAP overnight overloads both units several times over — camping, blackout, workday, tailgate, van life, none of these is sized for a single 448-512Wh battery. CPAP is the one scenario either wins outright, and the DJI takes it: 74% of capacity used against the AC50B's 84%.
And unlike some close calls on this site, the DJI's CPAP win isn't hollow — it pairs a bigger reserve with a fan that measures 25dB against 45. Headroom and quiet both point the same way here.
Brand Trust
Selected because: Cross-brand — DJI's drone pedigree and quiet-tech reputation against BLUETTI's category maturity, plus the proprietary-adapter caveat.
DJI is the new name in this category, about two years in, leaning entirely on the drone business's global support network and 700-plus battery patents. Its Power 500 backs that pedigree up: quietest fan in the class and fast wall-charging speeds. The catch is real — no built-in solar charge controller, so that 300W solar rating needs a separate proprietary adapter DJI doesn't include in the box, and there's no expansion battery ecosystem yet if you outgrow it.
BLUETTI counters with two more years of category maturity and the strongest capacity-to-price ratio in the market, tied for the best-reviewed app of any brand here. Support is the honest weak point: heavily email-based with China-timezone delays, and outcomes vary by where you buy. DJI's support inherits a better reputation from its drone business, but has far less power-station-specific track record to judge it by.
Strengths & trade-offs
BLUETTI AC50B
Strengths
- +Costs $20 less
- +Lighter by 1.3 lb
Trade-offs
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Power 500's 4,000, so it wears out sooner.
DJI Power 500
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –No major technical downsides compared to rival.
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
Neither unit
Two nights of real camping load runs well past 2,000 watt-hours, and neither 448-512Wh battery gets close to covering it alone. Both fail this scenario together — the deciding factor here is buying a bigger single unit, not picking between these two.
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
Neither unit
Neither unit can fully handle this scenario (needs 1,645Wh). You'd need a higher-capacity station or to cut back on usage.
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
Power 500
A CPAP night is a rounding error against either battery — 84% of capacity used on the AC50B, 74% on the DJI — but the DJI wins this one on more than headroom. Its fan measures 25dB against the AC50B's 45, and at a bedside that's the number that actually reaches you.
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
Neither unit
Neither unit can fully handle this scenario (needs 910Wh). You'd need a higher-capacity station or to cut back on usage.
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
Neither unit
Neither unit can fully handle this scenario (needs 670Wh). You'd need a higher-capacity station or to cut back on usage.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Neither unit
Neither unit can fully handle this scenario (needs 4,685Wh). You'd need a higher-capacity station or to cut back on usage.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the six scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: Power 500 runs 2.1h vs 1.9h.
$299 list · direct from DJI
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 0–29hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–5.8hHigh-Draw Appliances
These reveal the real limitsscale 0–0.4h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
July 14, 2026
Verdict: the Power 500, on Power Score margin
Buy the DJI Power 500 unless $299 is a hard ceiling. For $60 more it holds 64 more watt-hours, 300 more continuous watts, and 1,000 more rated cycles, and its fan measures 25dB against the AC50B's 45 — a real, audible gap. It's also the cheaper battery to run over its life: $0.18 per lifetime kilowatt-hour against $0.22. The honest catch is the solar spec: DJI's Power 500 lists 300W of solar input but has no built-in solar charge controller, so that number requires a separate proprietary adapter DJI doesn't include in the box, unlike the AC50B's plug-and-play 200W solar input. DJI is also new to this category, about two years in, with no expansion battery ecosystem yet if you outgrow 512Wh. None of that closes the gap on capacity, output, cycle life, or noise. Take the AC50B only if the $299 price is the actual limit, or if built-in solar without a separate purchase matters more to you than the specs the DJI wins on.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 14, 2026. The links below open BLUETTI's and DJI's current prices.
$299.00 list · direct from DJI
or check the AC50B price$279.00 list
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated July 14, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): Tailgating.
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, AC50B rates 4.9/5 (95th percentile of 22 Personal-class units), and Power 500 rates 4.4/5 (67th percentile of 19 Compact-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.
25 Decibels Against 45
That's roughly the gap between a quiet room and a normal conversation. Two feet from a pillow at 2 a.m., the DJI is the one you forget is running.
One Runs There, One Visits
The AC50B's 1,000W surge is a brief cushion above its 700W continuous rating. The DJI's continuous rating already sits at that same 1,000W ceiling — it isn't visiting the number, it lives there.
A Clean Tie
Both carry a 5-year warranty — the one column on this page where price and capability differences don't show up at all. Spend the comparison energy elsewhere.
A Third More Life
4,000 rated cycles against 3,000 means the DJI's pack is built to outlast the AC50B's by roughly a third before either meaningfully fades. At a full cycle a day that's real years, not a rounding error.
Full record above — the Test Desk pick is the Power 500.
Check Power 500 price →or check the AC50B 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 AC50B is cheaper to buy, but the Power 500 is cheaper to own. At $0.15/kWh over its lifetime vs $0.21/kWh, the Power 500's higher cycle life and capacity make each dollar go further over the years.
Brand trust
BLUETTI
Ecosystem
One of the widest lineups in the category, budget to flagship, with specialized products like sodium-ion cold-weather units that DJI's four-model catalog doesn't attempt yet.
Support
Heavily email-based with China-timezone delays; outcomes split between smooth service and multi-week runarounds depending on where you buy.
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
The strongest capacity-to-price ratio in the category, and tied for the best-reviewed app of any brand here.
Worth knowing
Two more years of category track record than DJI, for whatever that's worth against a newcomer's hardware edge.
DJI
Ecosystem
A new entrant, about two years in, with just four power station models and no expansion battery ecosystem yet.
Support
Leverages DJI's established global repair network from the drone business, with a generally positive inherited reputation but limited power-station-specific history.
Community
No dedicated power station community yet. Discussions happen within r/dji (~250K members, mostly drone users). Very small power-specific presence on Facebook and forums.
App experience
Rated 3.5/5 iOS and Android (DJI Home app ratings reflect entire DJI ecosystem including drones/cameras, not power-station-specific). Users report the on-device screen is more reliable than the app.
Unique strength
Quietest operation in the category, fast wall-charging speeds, and 700-plus battery patents carried over from drone R&D.
Worth knowing
No built-in solar charge controller — the 300W solar rating requires a separate proprietary adapter not included in the box.
Analyst note
DJI brings newer, quieter, more efficient hardware backed by drone-business support infrastructure, but the category track record is thin and the solar controller is a separate purchase. BLUETTI brings two extra years of category maturity and the stronger price-to-capacity math, with support that's genuinely inconsistent depending on where you buy. If quiet, efficient hardware is the priority, DJI's newness is a smaller risk than it looks; if the longest track record matters more, BLUETTI's is longer.
Growth path
AC50B
FIXED CAPACITYFixed at 448Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 200W of solar. Limited to a single portable panel.
Limited ports. You'll likely need a power strip or splitter.
Power 500
FIXED CAPACITYFixed at 512Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 300W of solar. Limited to a single portable panel.
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
Neither expands, and that's no knock on either — each is a complete unit at a fixed size. Buy the capacity that covers your needs now (the Power 500 gives you the larger ceiling); you can't add to either later.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
BLUETTI AC50B
Reviewer coverage of the AC50B highlights how quickly it refills: standard AC charging takes about 3 hours, dropping to 1.25 hours with the optional 480W Turbo charger, with 0-80% in 45 minutesA3. That's competitive charging speed for a budget-tier LFP unit.
The rest of the record covers the battery and the build: a 448Wh LiFePO4 pack rated for 2,500-plus cycles to 80% with 700W continuous outputA1, in a 14.8-lb frame reviewers call genuinely portableA2. Coverage doesn't dig into fan noise specifically, so the 45dB spec sits unconfirmed by field reports either way.
“A 448Wh LiFePO4 battery with 700W output (1,000W Power Lifting), rated for 2,500+ cycles to 80% — years of reliable use.”
Sources
amazon.com · backuppowerhub.com · the-gadgeteer.com · t3.com · bluettipower.com · greattips3s.com
DJI Power 500
The DJI Power 500's record is built on numbers that hold up under test, not just on the spec sheet: a 512Wh LFP pack with automotive-grade cells rated for 3,000-4,000 cycles, roughly a decade of lifespanB1, in a package reviewers note weighs only about 16 lbs and travels easilyB2.
Independent testing backs the output claim directly — one review ran a sustained 905W load and briefly pushed it to a 1,500W surge above its own 1,000W rating, and found it more efficient than DJI's own larger Power 1000B3. The one consistent caveat: it ships with just a wall plug, no solar adapter or car-charging cable included, so budget for those separatelyB4.
“A 512Wh LFP battery with up to 1,000W output; the automotive-grade LFP cells are rated up to 3,000-4,000 cycles for roughly a 10-year lifespan.”
Sources
dji.com · thesolarlab.com · techradar.com · views-sounds.com · t3.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
- Affordable, genuinely portable LFP unit with 700W output, 2,500+ cycles, fast Turbo charging, and B80 expandability. [AC50B · 3 entries]
- Light, efficient LFP unit with strong real-world output and drone-pilot appeal; the caveat is minimal included accessories. [Power 500 · 3 entries]
- A1
“A 448Wh LiFePO4 battery with 700W output (1,000W Power Lifting), rated for 2,500+ cycles to 80% — years of reliable use.”
amazon.com / backuppowerhub.com — AC50B review · 2026 · [positive]
- A2
“At 14.8 lbs it's meaningfully lighter than the AC70 (21.4 lbs) — a genuinely portable sub-15-lb unit with a long-cycle battery and 700W output at an easy-to-justify price.”
backuppowerhub.com / the-gadgeteer.com — AC50B review · 2026 · [positive]
- A3
“Standard AC charging is about 3 hours, dropping to 1.25 hours with the optional 480W Turbo charger; 0-80% in 45 minutes.”
amazon.com / t3.com — AC50B review · 2026 · [positive]
- B1
“A 512Wh LFP battery with up to 1,000W output; the automotive-grade LFP cells are rated up to 3,000-4,000 cycles for roughly a 10-year lifespan.”
dji.com / thesolarlab.com — Power 500 review · 2026 · [positive]
- B2
“Weighs only about 7.3 kg, making it easy to transport.”
dji.com / techradar.com — Power 500 review · 2026 · [positive]
- B3
“In testing it ran a 905W load and briefly handled a 1,500W surge above its 1,000W rating; reviewers found it outperformed the larger DJI Power 1000 in efficiency testing.”
thesolarlab.com / views-sounds.com — Power 500 review · 2026 · [positive]
- B4
“Reviews are positive overall, though one noted it ships with only a wall plug — no solar adapters or car-charging cables included.”
t3.com / techradar.com — Power 500 review · 2026 · [mixed]
Research compiled July 14, 2026.
Who Should Buy Which
Buy the AC50B if you…
- →Price is the hard limit and $299 is what you have to spend; the AC50B is the cheaper unit to buy, even though it's the more expensive one to run.
- →You want a built-in solar charge controller without shopping for a separate adapter — the AC50B accepts up to 200W of solar directly.
Buy the Power 500 if you…
- →You want more of everything that matters long-term — capacity, continuous output, cycle life, and a fan you'll actually forget is running — for $60 more upfront.
- →You already own DJI drone gear and want the shared ecosystem, or you're building a solar setup and don't mind budgeting separately for the adapter.
If neither fits
If your load runs anywhere near a real camping weekend or an overnight blackout, both of these top out well short — start with something in the 1,500Wh-plus range instead of stretching either past what it's built for.
The Bottom Line
$60 buys more of nearly everything that matters here over time: 64 more watt-hours, 300 more continuous watts, 1,000 more rated cycles, and a fan 20 decibels quieter — and it's still cheaper to run per kilowatt-hour. The AC50B's honest advantages are a lower sticker price and solar that works without a separate purchase.
For anyone not stretched to the exact $299 limit, the Power 500 is the better battery by nearly every measure that shows up after the first month of ownership. Take the AC50B only if the extra $60 is the actual constraint.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the BLUETTI AC50B or DJI Power 500 the better buy?
The DJI Power 500, for most buyers. It costs $359 to the AC50B's $299, but for that $60 it adds 64Wh of capacity, 300W more continuous output, 1,000 more rated cycles, and a fan that measures 25dB against 45 — and it's actually cheaper to run, at $0.18 per lifetime kilowatt-hour against $0.22. The AC50B's honest edge is the lower sticker price and a solar input that works without buying a separate adapter.
Why is the DJI Power 500 so much quieter?
Its fan measures 25dB under load against the AC50B's 45. DJI markets it as the quietest station in the category, and the general claim holds up in the field record even though it doesn't independently verify the exact figure. Two feet from a pillow or a desk, that gap is the difference between forgetting it's on and noticing every cycle.
Does the DJI Power 500 really need a separate solar adapter?
Yes. It has no built-in solar charge controller, so the 300W solar rating on the spec sheet requires DJI's own proprietary adapter, sold separately and not included in the box. One review also notes it ships with just a wall plug — no solar or car-charging cables at all — so budget for those before comparing its 300W rating directly to the AC50B's built-in 200W solar input.
Which one lasts longer?
The DJI Power 500. It's rated for 4,000 charge cycles against the AC50B's 3,000, roughly a third more charge-and-drain cycles before the pack meaningfully fades. Both warranties run five years, so the cycle-life edge is the more telling long-term number.
Can either one run a sustained load over 700 watts?
Only the DJI, reliably. Its 1,000W continuous rating already sits at the shared 1,000W surge ceiling, so a steady load up to 1,000W just runs — one review even measured a sustained 905W load and a brief 1,500W surge above its own rating. The AC50B's 1,000W surge is a brief cushion above its 700W continuous rating, good for a startup jolt, not a sustained draw.
Where to buy
BLUETTI AC50B
$279.00
$279.00 list · direct from BLUETTI
DJI Power 500Pick
$299.00
$299.00 list · direct from DJI
Prices may vary by retailer and are subject to change.