Head-to-head test
Anker SOLIX C300X vs DJI Power 500
Priced within $1 of each other, these two pack the same energy into every pound, so the DJI Power 500's extra 7.1 pounds buy 224Wh more battery and 700W more output at no extra cost: take the DJI unless the lightest possible carry is the entire job.
Full profiles: Anker SOLIX C300X → · DJI Power 500 →
Written by Wenny ZhengUpdated
Portable Power Tester, Station Arena Test Desk
Spec deltas
The DJI Power 500 costs $299 and the Anker SOLIX C300X costs $300, so price settles nothing here. What the money buys settles everything. The DJI holds 512Wh to the Anker's 288Wh and runs 1,000W continuous to its 300W, which makes it the only one of the two that powers a real appliance or carries a CPAP through a whole night.
Here's the arithmetic that makes this easy. Divide each battery by its weight and you get the same answer: 288Wh over 9 lb is 32Wh per pound, and 512Wh over 16.1 lb is 31.8. Neither box is hauling dead weight the other avoids. The DJI's extra 7.1 pounds are 224Wh of battery the Anker simply doesn't have, so on this page 'lighter' and 'smaller' are the same word.
The Anker still has a real brief. It's a one-hand grab, its 140W USB-C port charges a big laptop faster than the DJI's 100W, and its ≤10ms UPS class is the tighter of the two for a desktop PC. If your loads live on USB-C cables and never run overnight, it's the better bag. For everything else, take the DJI.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
weight
The Anker isn't a denser, cleverer design that saves weight. It's the same density with less inside. At the same price, choosing it means paying identical money to carry 224Wh less, and the only thing you get back is the weight of the battery you didn't buy.
C300X: 288Wh in a 9 lb boxPower 500: 512Wh in a 16.1 lb boxtypical prices within $1 of each other
Why it mattersAnyone torn between 'lighter' and 'bigger' should know it's one trade here: take the C300X only if 7.1 pounds matters more to you than 224Wh.
continuous output
At a 400W load the C300X's 600W surge gets things started, then its 300W continuous rating drops them. The Power 500 holds that 400W with most of its rating unused, and in testing carried a 905W load and rode a 1,500W spike past its ratingB3. A countertop blender or a corded power tool running steadily above 300W simply isn't on the Anker's list.
C300X 300W continuous / 600W surgePower 500 1,000W continuous / 1,000W surgeTailgate Party's 400W peak: the C300X starts it but can't hold it; the Power 500 sustains itreviewers ran the Power 500 at 905W and saw it ride a brief 1,500W surgeB3
Why it mattersIf even one wall appliance is on your list, the C300X isn't a smaller Power 500; it's the wrong tool, and you want the DJI.
A blink and a blackout are different jobs. The Anker catches the blink cleanly, then runs out about 75Wh before morning if the outage lasts the night. The Power 500's rated switchover is the slower ≤20ms, but it's the one still running at dawn with 115Wh in hand.
CPAP Overnight needs 320WhC300X 245Wh usable after the 85% derate, 75Wh short; Power 500 435Wh usable, 115Wh to spareC300X UPS class ≤10ms, and a reviewer pulled the plug on a running computer, router, modem and CPAP with no interruptionA7
Why it mattersCPAP users buying for outages rather than flickers want the DJI; a fast switchover doesn't help when the battery behind it is empty before the alarm.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: The DJI holds 512Wh to 288Wh and runs 1,000W to 300W, the gap between charging devices and running an appliance.
continuous output
One of these runs a blender and the other politely declines. The C300X's 300W covers everything that merely charges: a laptop, phones, a CPAP, even a 50W mini fridge a reviewer ran off it for 5 hours 30 minutesA9. The Power 500's 1,000W covers all of that plus the things that plug into a kitchen outlet and mean it.
Capacity points the same way. After the flat 85% derate the Anker has about 245Wh to give and the DJI about 435Wh, the difference between topping up devices and getting through an evening. The Anker's one output edge is USB-C: 140W against 100W, across three ports to the DJI's two, so a 140W-class laptop charges at full speed from the Anker and a notch slower from the DJI. If your day runs on USB-C cables, count that.
Portability & Form Factor
Selected because: At 9 lb against 16.1, weight is the C300X's real argument, and the per-pound arithmetic shows exactly what it trades away.
weight
Nine pounds is a one-hand grab you stop noticing. 16.1 is still portable, just something you carry on purpose, set down deliberately, and think about before a long walk from the car. For a box that lives in a backpack or rides to the picnic table, that's the C300X's whole case, and it's a fair one.
But weigh the batteries, not just the boxes. Because the two carry the same energy per pound, the DJI's extra 7.1 pounds are storage, not padding. Picking the Anker doesn't mean carrying a smarter design; it means carrying less. If less is what the job needs, that's a perfectly good reason. Just know that's the trade.
Your Life, Your Pick
Selected because: Most rows are too big for either unit; the CPAP night is the one everyday job that cleanly separates them.
Five of the seven rows come back 'neither', and they should. A weekend camp wants 2,100Wh and an eight-hour blackout 1,645Wh, while the bigger of these two has 435Wh usable. If those are your jobs, you're in the wrong aisle entirely.
Two rows actually decide something. The afternoon off-grid run is 100Wh and both finish it with room to spare, so the tiebreak is what rides in the bag, and that's the Anker. The CPAP night goes the other way: 320Wh needed, the C300X running out 75Wh short of morning, the Power 500 finishing with 115Wh left. Find the row that matches your actual week; here it's almost always one of those two.
What the Specs Don't Tell You
Selected because: The C300X's tighter UPS class and the DJI's higher surge ceiling hold the finer trade-offs.
rated cycles
The C300X's best card lives in here: a ≤10ms UPS class against the DJI's ≤20ms. Both are ratings, not lab results, but a reviewer pulled the plug on a running computer, router, modem and CPAP and nothing flickeredA7. If a desktop with unsaved work is what you're protecting, that's a real edge for the Anker.
Surge is the mirror image. The Anker's 600W peak is double its own rating and the DJI's 1,000W peak is level with its own, yet the DJI swallows the bigger startup spike, because a motor asks for watts, not ratios. Warranty is a draw at five years each, with the DJI's term the maximum offered when bought from DJI's own store. Cycle life leans DJI at 4,000 rated cycles to 3,000, both minimums, which is roughly 11 years of daily use against 8.2.
Lifetime Value
Selected because: Similar money, but 2,048 kWh of rated lifetime energy on one side against 864 on the other.
cost / lifetime kWh
Similar money, very different amounts of energy. Over their rated lives the Power 500 delivers about 2,048 kWh and the C300X about 864, which works out to $0.15 per lifetime kilowatt-hour on the DJI against $0.35 on the Anker.
Neither expands, so these are the whole ceilings. The takeaway isn't the decimals. It's that the cheaper-per-kilowatt-hour unit and the more capable unit are the same box, and it costs no more to take home.
Strengths & trade-offs
Anker SOLIX C300X
Strengths
- +Lighter by 7.1 lb
Trade-offs
- –Weaker inverter (-700W) limits appliance compatibility.
- –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
- +Costs $1 less
- +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 seven 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
Neither unit covers this scenario's 2,100Wh: the SOLIX C300X comes up 1,855Wh short (about 12% covered), the Power 500 1,665Wh (21%). This is well outside what either unit is for; the right answer here is a larger station, not a choice 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 covers this scenario's 1,645Wh: the SOLIX C300X comes up 1,400Wh short (about 15% covered), the Power 500 1,210Wh (26%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
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
This is the row that ends the 'the Anker's probably fine' argument. A CPAP night models at 320Wh; the C300X has about 245Wh usable and quits 75Wh short, sometime before the alarm. The Power 500 finishes with 115Wh still in the tank. If a CPAP is why you're shopping, the DJI runs it and the Anker runs out.
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 covers this scenario's 910Wh: the SOLIX C300X comes up 665Wh short (about 27% covered), the Power 500 475Wh (48%). Treat this as partial cover — enough for the essentials in it, not the whole list.
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 gets through it, for different reasons. The C300X's 600W surge starts the 400W peak and its 300W continuous rating then drops it, so its battery never gets a say. The Power 500 holds the 400W load comfortably but runs 235Wh short of the 670Wh party. The DJI gets you partway; the Anker can't carry that load at all.
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 covers this scenario's 4,685Wh: the SOLIX C300X comes up 4,440Wh short (about 5% covered), the Power 500 4,250Wh (9%). This is well outside what either unit is for; the right answer here is a larger station, not a choice between these two.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
SCN-07 · an afternoon · needs 100Wh
Afternoon Off-Grid
Phones and a speaker at the park, beach, or campsite — the small-unit job description
Either unit
Both handle it with ease: 100Wh leaves the C300X at 41% used and the Power 500 at 23%. With the prices this close, the tiebreak is what rides in the bag, and the Anker is the 9 lb carry against 16.1. This is the job where lighter simply wins the coin-flip.
Battery budget usedlower = more headroom
LOAD Phone Charger (×2) 30W×2h · Bluetooth Speaker 10W×4h
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: Power 500 runs 2.1h vs 1.2h.
$299 list · direct from DJI
Planning for more than this? Describe your whole setup and get it sized →
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
October 11, 2026
Verdict: the Power 500
Take the DJI Power 500. For the same money it holds 512Wh to the C300X's 288Wh, runs 1,000W continuous to its 300W, and is the one of the two that gets a CPAP through the night. The C300X keeps three genuine edges (9 lb against 16.1, a 140W USB-C port against 100W, and a ≤10ms UPS class against ≤20ms), so buy it only if the unit's whole job is charging laptops and phones out of a bag, or keeping a desktop PC alive through brief cuts. The moment an appliance over 300W or an all-night load enters the plan, the Anker is the wrong size.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of October 11, 2026. The links below open Anker's and DJI's current prices.
$299.00 · direct from DJI
Last checked 16 days ago. Prices move — check before you buy.
or check the SOLIX C300X price$299.99 list
Written by Wenny Zheng, Portable Power Tester · Station Arena Test Desk · Updated October 11, 2026
Black Friday · 38 days out
Prices to beat:SOLIX C300X $300Power 500 $299
We have never seen either discounted, so any real cut would be a first.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): 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, SOLIX C300X rates 4.6/5 (74th percentile of 24 Personal-class units), and Power 500 rates 4.5/5 (68th percentile of 20 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.
Higher ratio, lower ceiling
The C300X peaks at 600W on a 300W inverter, twice its rating. The Power 500 peaks at 1,000W on a 1,000W inverter, with no headroom above its own rating at all. It still wins at switch-on, because a fridge or pump asks for a fixed number of startup watts, and 1,000W is a bigger spike to absorb than 600W. The Anker's ratio only means it idles further below its own limit.
The Anker's genuine edge: a tighter UPS class
The C300X is rated ≤10ms on switchover and the Power 500 ≤20ms. Both are rated ceilings, not lab measurements. Routers and most electronics ride through either, but the fussiest desktop PC power supplies sit right around the DJI's line. If a computer with unsaved work is the thing you're protecting, the Anker's tighter rating is the safer bet, and it's one of the few places on this page where the smaller unit is plainly the better tool.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The Power 500's figure is a maximum rather than a guarantee — it depends on buying from DJI's own store, which is where the full five years is advertised.
Battery Lifespan in Real Years
The Power 500 is rated for 4,000 cycles vs 3,000. In real life: at daily use, that's 11 vs 8.2 years. At weekend use (twice a week), it's 38 vs 29 years. One caution reading years across different sizes: a cycle is 512Wh on the Power 500 and 288Wh on the SOLIX C300X, so count lifetime energy — roughly 2,048 kWh against 864 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
Full record above — the Test Desk pick is the Power 500.
Check Power 500 price →or check the SOLIX C300X 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 Power 500 wins on both sticker price and long-term value. At $0.15/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Delivers each lifetime kWh for $0.20 less — check the Power 500 price →
Brand trust
Anker
Ecosystem
7-8 SOLIX portable power stations across C-series (compact) and F-series (flagship), plus the X1 home energy system
Support
US-based support with a long record of no-hassle replacements, though SOLIX support has drifted toward AI-driven agents and generic answers. For a 9 lb unit you can box up yourself, return logistics bite far less than they do on the heavy stations.
Community
Moderate — active Reddit (r/Anker, r/AnkerSOLIXCommunity) and growing. Benefits from Anker's massive consumer electronics brand awareness.
App experience
Rated 4.5/5 iOS (~1,100 ratings) · 4.3/5 Android
Unique strength
Anker's consumer-electronics track record behind a small purchase, plus InfiniPower cells built for long cycle life.
Worth knowing
Anker has pushed firmware updates that removed features without warning, so read the release notes before updating a unit you depend on.
DJI
Ecosystem
DJI entered power stations in 2024 and has five models to date; expansion arrived on the newer Power 2000 and Power 1000 V2, not on the Power 500.
Support
Leveraging DJI's established global support and repair center network from the drone business. Generally positive reputation inherited from drone operations, but limited power-station-specific track record.
Community
No dedicated power-station community yet. Troubleshooting talk mostly lives inside the drone-focused r/dji, so there's less lore to search when something goes wrong.
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
Drone-grade industrial design, 700-plus battery patents, LFP cells rated past 4,000 cycles, and SDC ports that fast-charge DJI drone batteries.
Worth knowing
The DJI Home app rates 3.5 out of 5, a score shared across DJI's drones and cameras, and the on-device screen is the more dependable control. Solar charging needs a separate proprietary adapter.
Analyst note
The brands mirror the boxes. Anker is the known quantity with a big installed base and support that's slipping from its best; DJI is the newcomer with serious hardware credentials and a short résumé in this category. For a small unit you'll rarely call support about, DJI's spec lead matters more than its thinner track record. If a long support history is what lets you sleep, that one is Anker's to keep.
Growth path
SOLIX C300X
FIXED CAPACITYFixed at 288Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 100W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
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.
Anker SOLIX C300X
Reviewers keep reaching for 'quiet' with the C300X: one pushed it to its limits and still found it near-silentA4, while a separate test had the fan ramp up noticeably under a 500W circular-saw load, well past the 300W ratingA11. Wall charging held to the box in one test, 80% in 49 minutes and full in 65A8, though another reviewer timed a full AC charge at 1 hour 8 minutes against the advertised hourA5. The UPS did its job with a computer, router, modem and CPAP running when the plug was pulledA7, and one reviewer's carry handle showed no wear after dozens of trunk loadsA12.
The complaints sit in the app and the charging pipeline. Owners have hit Bluetooth pairing dropouts that block monitoring until the device is forgotten and re-pairedA1, and one reported a unit that wouldn't charge past 25%A2. The C300X also switches itself off under very low draws like headphones or a smartwatch, an intended power-saving cutoff that still catches people outA3, and one reviewer wanted more than its 100W solar ceilingA6. Coverage comes from a handful of hands-on reviews and a troubleshooting roundup rather than a deep owner communityA0.
“The unit was confirmed to shut itself off when charging very low-draw devices like headphones or a smartwatch — an intended power-saving cutoff rather than a defect, but one that catches owners off guard.”
Sources
teqclub.com · thesolarlab.com · backuppowerhub.com
DJI Power 500
Field data on the Power 500 is thinner. It comes from a maker that entered power stations in 2024, and what exists leans on established review sites rather than a long owner recordB0. It's consistent and positive: testers ran it at 905W, watched it ride a brief 1,500W surge above its 1,000W rating, and found it more efficient than DJI's larger Power 1000B3. The LFP cells are rated for 3,000 to 4,000 cycles, roughly a 10-year lifespanB1, and one review called it easy to transportB2.
The knock is the box contents: one review noted it ships with a wall plug and nothing else, no solar adapter or car-charging cableB4. That bites harder than it sounds, because DJI's solar input runs through a separate proprietary adapter rather than a built-in charge controller, so reaching its 300W solar ceiling (triple the Anker's 100W) costs extra. Long-term reliability is still being written; DJI's hardware record from drones is the reason to expect it holdsB0.
“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
- Independent hands-on reviewers found the C300X near-silent at its rated 300W load, though one test noted the fan becoming noticeably audible under a heavier transient/overload draw. [SOLIX C300X · 2 entries]
- AC charging and UPS switchover both performed at or better than spec in hands-on testing — fast wall recharge and an imperceptible transfer that kept a computer, router, and CPAP running through a pulled plug. [SOLIX C300X · 2 entries]
- The most concrete owner-reported defects both sit in the app/charging pipeline: a Bluetooth pairing dropout that blocks monitoring, and a specific report of the battery refusing to charge past 25%. [SOLIX C300X · 2 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
“Users reported trouble connecting the C300X to the Anker app, which blocked monitoring power usage and changing settings; re-pairing by "forgetting" the device in Bluetooth settings and reconnecting through the app usually fixed it.”
teqclub.com — "Solving Common Anker C300X Problems" · unknown · [negative]
- A2
“My Anker solix c300x Portable Power Station will not accept charge more than 25%.”
teqclub.com — "Solving Common Anker C300X Problems" (quoted owner comment) · unknown · [negative]
- A3
“The unit was confirmed to shut itself off when charging very low-draw devices like headphones or a smartwatch — an intended power-saving cutoff rather than a defect, but one that catches owners off guard.”
teqclub.com — "Solving Common Anker C300X Problems" · unknown · [mixed]
- A4
“This unit is impressively quiet. Even with the internal fans running when we pushed it to its limits, the C300X makes virtually no noise.”
thesolarlab.com — "Anker C300X Power Station Review" · 2026 · [positive]
- A5
“Rated for about 57 minutes at a 300W load, the C300X actually delivered around 50 minutes in testing — 87% efficiency. The advertised 1-hour full AC charge came in at 1 hour 8 minutes.”
thesolarlab.com — "Anker C300X Power Station Review" · 2026 · [mixed]
- A6
“The 100W solar input ceiling felt too low — the reviewer wished for 200W support — and called Anker's own solar panels expensive; a solar panel recognition delay was also noted on initial connection.”
thesolarlab.com — "Anker C300X Power Station Review" · 2026 · [negative]
- A7
“Pulling the AC plug mid-use while a computer, router, modem, and CPAP machine were running, the computer stayed on without interruption — no screen flicker, no system hiccup.”
backuppowerhub.com — "Anker SOLIX C300X Review" · 2026 · [positive]
- A8
“AC charging to 80% took 49 minutes in testing, matching the advertised claim; full charge landed at 65 minutes. A 100W solar panel took 3 hours 15 minutes, and 12V car charging took about 6.5 hours.”
backuppowerhub.com — "Anker SOLIX C300X Review" · 2026 · [positive]
- A9
“A 60W laptop ran 4 hours 15 minutes before hitting 20% battery; a 50W mini fridge ran 5 hours 30 minutes continuous; the unit was good for about 22 full phone charges or 9 drone-battery cycles per depletion.”
backuppowerhub.com — "Anker SOLIX C300X Review" · 2026 · [positive]
- A11
“Under a 500W circular saw load, the fan ramped up noticeably — a contrast to how quiet the unit stays at its rated 300W.”
backuppowerhub.com — "Anker SOLIX C300X Review" · 2026 · [mixed]
- A12
“The C300X feels premium in a way many budget power stations don't; the carry handle showed no wear or flex after dozens of trunk loads.”
backuppowerhub.com — "Anker SOLIX C300X 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 October 11, 2026.
Who Should Buy Which
Buy the SOLIX C300X if you…
- →The day-bag charger. If the job is keeping a laptop, a tablet and phones alive on a day out, the Anker is the 9 lb one, with the faster 140W USB-C port and a third USB-C socket.
- →The desk-side PC minder. Its ≤10ms UPS class is the tighter of the two for a desktop with unsaved work, and a hands-on test kept a computer and router running through a pulled plugA7.
- →Anyone whose loads never top 300W and never run all night. That's exactly the job it was built for, and it does it 7.1 pounds lighter.
Buy the Power 500 if you…
- →The one-box buyer. 1,000W and 512Wh mean it charges everything and runs a real appliance too, for the same money as the smaller unit.
- →The CPAP user planning for outages. This is the one that gets through a full night with capacity left, not the one that quits before the alarm.
- →The solar tinkerer willing to buy DJI's adapter: it takes up to 300W of panel input against the Anker's 100W.
- →The drone pilot already flying DJI, for whom the brand's proprietary SDC fast-charge ports are a genuine perk.
If neither fits
If you're planning to ride out an eight-hour blackout or run a weekend campsite, close this tab cheerfully. Those jobs model at 1,645Wh and 2,100Wh, and the bigger of these two has 435Wh usable. Look at a station measured in thousands of watt-hours; either of these will have you rationing power by the first evening.
The Bottom Line
Take the DJI Power 500. Priced within $1 of the Anker, it carries nearly double the battery and more than three times the output, and the per-pound arithmetic says its extra weight is simply extra energy. It's the one that runs an appliance and the one that finishes a CPAP night.
The C300X is a good little box with a narrow brief: a 9 lb bag charger with fast USB-C and a tight UPS switchover. If that's the whole job, buy it happily. If the job might ever grow past 300W or past bedtime, the bigger answer costs nothing extra. Go get the DJI.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the DJI Power 500 better than the Anker SOLIX C300X?
For most uses, yes. At $299 against $300 the two cost the same, and the DJI holds 512Wh to 288Wh and runs 1,000W continuous to 300W. The Anker wins on weight (9 lb against 16.1), USB-C charging speed (140W against 100W) and UPS switchover class (≤10ms against ≤20ms).
Can the Anker SOLIX C300X run a CPAP all night?
Not a full night on our model. A CPAP night runs about 320Wh, and the C300X has about 245Wh usable after the 85% derate, leaving it 75Wh short. The Power 500 finishes the same night with 115Wh to spare. A machine drawing well under the modeled load might squeak through on the Anker, but the DJI takes the guesswork out.
Why is the DJI Power 500 so much heavier than the Anker C300X?
Because it carries more battery, not because it's less efficient. The C300X is 9 lb for 288Wh and the Power 500 is 16.1 lb for 512Wh, which is about 32Wh per pound either way. The DJI's extra 7.1 pounds are 224Wh of extra storage.
Does the DJI Power 500 come with solar charging cables?
No. One review noted it ships with only a wall plug, with no solar adapter or car cable in the box. DJI's solar input also needs a separate proprietary adapter rather than a built-in charge controller, so budget for it. Once connected it accepts up to 300W of solar against the C300X's 100W, a ceiling one Anker reviewer wished were higher.
Which is quieter next to a bed, the C300X or the Power 500?
Neither gives you a clean reason to choose on noise. Both carry the same 25 dB published figure, a best-case number rather than a reading under load, so it can't separate them. A hands-on test found the C300X near-silent even when pushed, with its fan only obvious under a 500W saw load.
Brand matchup
Anker SOLIX vs DJI: measured across every matchup →Where to buy
Anker SOLIX C300X
$299.99
$299.99 · direct from Anker
Last checked 16 days ago. Prices move — check before you buy.
DJI Power 500Pick
$299.00
$299.00 · direct from DJI
Last checked 16 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.