Verification
+4.0 EcoFlowNo overlap — every EcoFlow product beats every FOSSiBOT product here.
Brand comparison
EcoFlow vs FOSSiBOT
EcoFlow scores 7.6 across 13 products; FOSSiBOT scores 4.5 across 4. They overlap in portable stations. That is 77% of what EcoFlow sells and 75% of what FOSSiBOT sells. EcoFlow leads on verification, FOSSiBOT on capacity.
All 13 EcoFlow products
EcoFlow
13 of 13 products scored · $389 – $7,714
Buy Now- Verification — 6.0 against 2.0
- Recharging — 8.0 against 5.5
- Backup Readiness — 7.0 against 5.0
7.6
4.5
All 4 FOSSiBOT products
FOSSiBOT
4 of 4 products scored · $429 – $3,299
Buy Now- Capacity — 6.5 against 5.0
- Power Output — 9.0 against 8.0
- Battery Life — 7.0 against 6.0
Across everything we scored, EcoFlow sits 3.13 ahead — led by verification.
Both brands also sell into Home Backup Power Systems. Neither side carries enough scored products there for a median we would publish, so this comparison does not cover them.
Brand verdict
ahead · +3.13 (7.6 vs 4.5)
Pick EcoFlow when
Verification matters most6.0vs2.0
Pick FOSSiBOT when
Capacity matters most6.5vs5.0
Scored 11 October 2026 from published specs and owner reviews. We don't buy or test units. How we score
Most common complaints
From owner reviews of each brand's top-scored product in Portable Stations.
EcoFlow DELTA Pro Portable Power Station
- Durability and the pull handle, tagged negative in 11 mentions
- Battery life, tagged negative in 8 mentions
- Smoke from the unit, seven events from six owners
FOSSiBOT F3600 Pro Portable Power Station
- Full wall charge took 3 hours 36 minutes, per one reviewer
- Screen failed and the unit had to be replaced, per one channel
- Held back from top picks by its 92.59 lb weight, per one reviewer
Where EcoFlow and FOSSiBOT differ
Median scores on a 0–10 scale. Each row is one criterion.
Recharging
+2.5 EcoFlowEcoFlow 4.0–10.0 vs FOSSiBOT 4.0–7.0.
Backup Readiness
+2.0 EcoFlowEcoFlow 3.0–10.0 vs FOSSiBOT 5.0–7.0.
Capacity
+1.5 FOSSiBOTEcoFlow 3.0–10.0 vs FOSSiBOT 5.0–10.0.
Power Output
+1.0 FOSSiBOTEcoFlow 3.0–10.0 vs FOSSiBOT 5.0–10.0.
Battery Life
+1.0 FOSSiBOTEcoFlow 4.0–8.0 vs FOSSiBOT 4.0–10.0.
Warranty & Support
tiedEcoFlow 5 Years (13); FOSSiBOT 5 Years (4).
Value
Only EcoFlow is scored here (5.0 from 3 of 13). FOSSiBOT sits below the floor (1 of 4).
The scores above are our reading of the evidence below. This is the evidence.
Safety listings are recorded per product from the certifier's own directory or a certificate the maker publishes, not from the maker's wording. A UL listing can be checked by model in UL Product iQ.
Warranty terms
EcoFlow
13 of 13
FOSSiBOT
4 of 4
What EcoFlow and FOSSiBOT owners report
Independent sources pooled per brand. Each row is one source.
N of M = how many scored products carry the brand-level reading shown, out of all scored.
Amazon
+3.5 EcoFlowNo overlap — every EcoFlow product beats every FOSSiBOT product here.
EcoFlow 6.0–9.0 vs FOSSiBOT 5.0–7.0.
YouTube
+2.0 EcoFlowEcoFlow 6.0–8.0 vs FOSSiBOT 5.0–7.0.
FOSSiBOT: 1 of 4 scored products carry this reading.
Source details
FOSSiBOT
- No owner thread in an independent subreddit reports on the F3600 Pro, only a buyer in r/OffGridLiving asking whether a 2 kW inverter generator would charge it safely (March 2025), so this reads the brand.
- In r/SolarDIY an F800 owner's startup screen froze and stayed frozen while the unit ran (2026).
Brand rollup across scored products.
1 of 4 scored products carry this reading
Owner reviews
Only EcoFlow is scored here (8.0). EcoFlow: 13 of 13 scored products carry this reading. FOSSiBOT: 0 of 4 scored products carry this reading.
Best EcoFlow vs best FOSSiBOT, category by category
The three best-scoring products each brand sells in every category they both compete in, ranked by overall score.
Portable Stations
See all Portable Stations products
EcoFlow leads
9.0
1st of 74 in Portable Stations
Strengths
- 3,600 W continuous output
- 3,600 Wh in one unit
- Expands to 10.8 kWh with two extra batteries
- Takes 1,600 W of solar at up to 150 V
Drawbacks
- 99 lb
- 240 V needs two units and a hub
- Switchover up to 30 ms
- 2.7 hours to charge on 120 V
5.3
37th of 74 in Portable Stations
Strengths
- 3,600 W continuous with a 7,200 W surge
- UPS switchover within 10 ms
- Takes up to two FB3840 batteries11,520 Wh in all
- Up to 2,000 W of solar input at 12 to 160 V
Drawbacks
- The US spec table rates 6,500+ cycles to 50 percent of original capacity; the page copy gives no end point and FOSSiBOT's global page bullet says to 80 percent
- AC input capped at 1,500 Wand CNET measured a full wall charge of 3 hours 36 minutes (September 2026)
- The US page claims a full solar charge in 2 hoursits spec table gives about 2.5 hours
- FOSSiBOT sells no transfer switch for itand two units cannot be linked for more power or 240 V
8.3
3rd of 74 in Portable Stations
Strengths
- 1,600 W of solar over two inputs
- 3,600 W continuous output
- Expands to 11 kWh with extra batteries
- TT-30 outlet for RVs
Drawbacks
- No 240 V output
- No published cycle rating
- 74.3 lb
- An overload shuts off only some outlets in two tests
4.4
56th of 74 in Portable Stations
Strengths
- 1,800 W continuous
- 0 to 100 percent from the wall in about 68 minutes at 1,200 W
- UPS switchover within 10 ms
- ECO mode runs loads from solar and battery before the grid
Drawbacks
- On pre-order: FOSSiBOT's US store expects a restock on October 28, 2026
- The US spec table gives a 3,600 W surgethe US FAQ and FOSSiBOT's Amazon kit titles give 2,700 W
- FOSSiBOT's Amazon listing caps the UPS load at 1,200 W
- No FOSSiBOT expansion battery: the external-battery input takes third-party 12, 24 or 48 V batteries at up to 15 A, cable not included, and switches off when the unit restarts
8.0
5th of 74 in Portable Stations
Strengths
- 1,000 W of solar over two inputs
- Full wall charge in 56 minutes
- Two 140 W USB-C ports
- Expands to 5 kWh with extra batteries
Drawbacks
- Sold on pre-ordershipping November
- Fans slow to ramp under heavy load in TheSolarLab's test
- Real surge about 2,600 W against 3,600 W claimed
- No transfer switch sold for it
3.4
71st of 74 in Portable Stations
Strengths
- 2,400 W continuous with a 4,800 W surge
- UPS switchover under 8 ms
- Wall charge rate set from 300 to 1,100 W by a front dial
- Charges from wall and solar together at up to 1,600 W
Drawbacks
- Solar input capped at 500 Wat 11.5 to 50 V
- Takes no expansion battery: FOSSiBOT states it is a single unit
- In US UPS mode the AC load must stay under 1,100 Wby the manual
- The US spec table rates 4,000 cycles to 80 percentthe US manual gives over 3,500 and no end point
EcoFlow vs FOSSiBOT: the numbers
7.6
Products scored13 of 13
Price range$389 – $7,714
4.5
Products scored4 of 4
Price range$429 – $3,299
EcoFlow vs FOSSiBOT: common questions
Is EcoFlow or FOSSiBOT better?
EcoFlow 7.6 from 13 scored products; FOSSiBOT 4.5 from 4.
What is the biggest difference between EcoFlow and FOSSiBOT?
Verification: EcoFlow medians 6.0, FOSSiBOT medians 2.0 (EcoFlow by 4.0).
Which is better for recharging, EcoFlow or FOSSiBOT?
EcoFlow on recharging — EcoFlow 8.0, FOSSiBOT 5.5.
Which is better for backup readiness, EcoFlow or FOSSiBOT?
EcoFlow on backup readiness — EcoFlow 7.0, FOSSiBOT 5.0.
Which EcoFlow and FOSSiBOT portable stations should I buy?
EcoFlow: EcoFlow DELTA Pro Portable Power Station. FOSSiBOT: FOSSiBOT F3600 Pro Portable Power Station.
How does Stuff VS Things score EcoFlow and FOSSiBOT?
Our own product medians: 13 EcoFlow and 4 FOSSiBOT. A criterion is compared only where both brands clear the floor.
Other comparisons
Scores calculated 11 October 2026 · Products excluded where fewer than two independent sources cover them · · How we score