EcoFlow DELTA 3 Plus
72BatteryRank score · Excellent
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EcoFlow DELTA 3 Plus vs VTOMAN FlashSpeed 1000
Decision readout
Better station
EcoFlow DELTA 3 Plus leads by 42 points overall.
VTOMAN FlashSpeed 1000
30BatteryRank score · Limited
What changes the decision
- Home backup: EcoFlow DELTA 3 Plus — more AC-delivered capacity and higher AC output
- Camping & RV: EcoFlow DELTA 3 Plus — lighter and easier to carry
By the BatteryRank Engineering Team
01 · Score evidence
Score breakdown
72
EcoFlow DELTA 3 Plus
Overall
30
VTOMAN FlashSpeed 1000
70
POWER
EcoFlow DELTA 3 Plus +32
38
Battery-side usable capacity and how much you can run at once.
77
TRUST
EcoFlow DELTA 3 Plus +43
34
Owner reputation, safety record, warranty, and build durability.
79
CHARGING
EcoFlow DELTA 3 Plus +63
16
Wall and solar recharge speed.
57
LIVABILITY
EcoFlow DELTA 3 Plus +38
19
Lightweight, portable, and quiet enough to live with.
Computed from sourced data with a published, price-independent formula. Scores are relative to each model's size class.
02 · Usable energy
Capacity truth
The watt-hours on the box aren't what reaches your devices. Same scale, both units.
EcoFlow DELTA 3 Plus
Rated (on the box)
1,024 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04The marketing number — total cell capacity.
AC delivered (est.)
870 Wh. Show source
estimated sourceestimate = battery-side usable capacity × 85% inverter efficiencyWhat reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
VTOMAN FlashSpeed 1000
Rated (on the box)
828 Wh. Show source
claimed sourcevtoman.com ↗2026-07-05The marketing number — total cell capacity.
AC delivered (est.)
704 Wh. Show source
estimated sourceestimate = battery-side usable capacity × 85% inverter efficiencyWhat reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
03 · Same assumptions
Same-device runtime
| Device | EcoFlow DELTA 3 Plus | VTOMAN FlashSpeed 1000 | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 12.1 nights | about 9.8 nights | 9 W · |
| CPAP (heated humidifier on) | about 1.9 nights | about 1.6 nights | 56 W · |
| Refrigerator (full-size) | about 14 hours | about 11 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 48 hours | about 39 hours | 18 W · |
| Laptop (65W charger) | about 27 hours | about 22 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 43 full charges | about 35 full charges | 20 W · |
One device at a time; estimates use each station's usable AC energy. Build your own load →
04 · Sourced hardware
Key specs, side by side
| Spec | EcoFlow DELTA 3 Plus | VTOMAN FlashSpeed 1000 |
|---|---|---|
| AC-delivered capacity | 870 Whest.. Show sourceestimated sourceus.ecoflow.com ↗2026-07-04 | 704 Whest.. Show sourceestimated sourcevtoman.com ↗2026-07-05 |
| Continuous power output | 1,800 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 1,000 W. Show sourceclaimed sourcevtoman.com ↗2026-07-05 |
| Surge power output | 3,600 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 2,000 W. Show sourceclaimed sourcevtoman.com ↗2026-07-05 |
| Max solar input | 1,000 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 300 W. Show sourceclaimed sourcevtoman.com ↗2026-07-05 |
| AC charge time (0–100%) | 56 min. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 70 min. Show sourceclaimed sourcevtoman.com ↗2026-07-05 |
| Weight | 12.5 kg. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 14.4 kg. Show sourceclaimed sourcevtoman.com ↗2026-07-05 |
| Rated cycle life | 4,000 cycles. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 3,000 cycles. Show sourceclaimed sourcevtoman.com ↗2026-07-05 |
Manufacturer figures unless marked verified or est. Tap or focus a figure to view its source. The better reading in each row is highlighted — lower wins for weight and recharge time.
Where these rank
- EcoFlow DELTA 3 Plus #1 Midsize (1 kWh class) in Best Portable Power Stations · #1 of 10 in Lightest Power Stations
Where to buy
Affiliate links: we may earn a commission if you buy, at no extra cost to you. Commission never affects our rankings.
EcoFlow DELTA 3 Plus
VTOMAN FlashSpeed 1000
Quick answers
- Is the EcoFlow DELTA 3 Plus better than the VTOMAN FlashSpeed 1000?
- EcoFlow DELTA 3 Plus leads by 42 points overall.
- Which has more usable capacity, the EcoFlow DELTA 3 Plus or VTOMAN FlashSpeed 1000?
- The EcoFlow DELTA 3 Plus, by 166 Wh — 870 Wh versus 704 Wh, a 24% advantage. At a 60 W load that is roughly 2.8 extra hours before the battery is empty. Both figures are estimated AC-delivered energy, not the nameplate battery rating — the watt-hours that actually reach your devices, which is always less than the number on the box.
- Which has more AC output, the EcoFlow DELTA 3 Plus or VTOMAN FlashSpeed 1000?
- The EcoFlow DELTA 3 Plus: 1,800 W versus 1,000 W continuous. That gap matters only if a load sits between the two numbers — below 1,000 W both run it, above 1,800 W neither does. Surge headroom follows the same order: 3,600 W against 2,000 W, and surge is what decides whether a compressor or pump actually starts.
- How does runtime compare between the EcoFlow DELTA 3 Plus and VTOMAN FlashSpeed 1000?
- On the same sourced load — a refrigerator (full-size) — the EcoFlow DELTA 3 Plus runs longer: 13.8 hours against 11.2. These are planning estimates from each model's AC-delivered capacity, not stopwatch tests; real duty cycle and temperature move them.
- Which is lighter, the EcoFlow DELTA 3 Plus or VTOMAN FlashSpeed 1000?
- The EcoFlow DELTA 3 Plus, by 1.9 kg (12.5 kg versus 14.4 kg). Both weights are manufacturer figures for the bare unit; cables and a solar panel add to whatever you actually carry.
- Which recharges faster from the wall, the EcoFlow DELTA 3 Plus or VTOMAN FlashSpeed 1000?
- The EcoFlow DELTA 3 Plus: 56 minutes from empty to full against 70 minutes, a difference of 14 minutes. This matters most between outages and during a short grid window — if you only ever recharge overnight, it does not matter at all.
- Which model should I buy for my use case?
- On the sub-scores that describe each use case: the EcoFlow DELTA 3 Plus for home backup, camping & rv. One model leads every use case we score here, which makes this an unusually clean choice.
Keep deciding
- Full scorecard, specs & price for EcoFlow DELTA 3 Plus →
- Full scorecard, specs & price for VTOMAN FlashSpeed 1000 →
- See more alternatives to EcoFlow DELTA 3 Plus →
- See more alternatives to VTOMAN FlashSpeed 1000 →
- What size do you need? →
- Browse all rankings →
- Check device runtime evidence →
- Compare outage and trip load plans →
- Browse complete power kits →
- Capacity vs output explained →
- Battery cycle-life thresholds →
- UPS behavior explained →