EcoFlow
EcoFlow RIVER 3 Plus
$299 · Lifetime $0.35/kWh over 3,000 rated cyclesChecked against EcoFlow's product page today.
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What it actually runs
Usable energy ≈ 243 Wh after our standard 85% inverter-efficiency assumption. Methodology
| CPAP overnightCPAP, humidifier off (40 W × 8 h) | ~6.1 h continuous · 0.8 days at typical daily use |
|---|---|
| EssentialsFridge + wifi + 3 lights (~190 W continuous) | ~1.3 h continuous · 0.1 days at typical daily use |
| Storm kitFridge + sump pump + lights + phones (~1,000 W) | ~0.2 h continuous · 0.1 days at typical daily use |
| Quick equivalents | ≈ 0 CPAP nights · 2 h of fridge · 12 phone charges |
How long will it run YOUR appliance?
Solar recharge
The RIVER 3 Plus accepts up to 220 W of solar input — panels beyond that sit idle. To sustain an essentials load (~1,680 Wh/day) off-grid you'd need roughly 470 W of panels, which exceeds this unit’s input cap — it can stretch runtime but not run essentials indefinitely.
Compatible kits: EcoFlow 220W Bifacial (220 W) · EcoFlow 400W Portable (400 W) · Renogy 200W Rigid (MC4) (200 W) · Rich Solar 400W Kit (MC4) (400 W) · Bluetti PV420 (420 W) · Anker SOLIX PS400 (400 W) · EcoFlow NextGen 160W (160 W) · Renogy 400W Portable Suitcase (400 W).
Specifications
| Capacity | 286 Wh |
|---|---|
| Usable (85%) | 243 Wh |
| AC output | 600 W |
| Surge output | 1,200 W |
| Max solar input | 220 W |
| Outage switchover | UPS mode, 10 ms |
| Output waveform | Pure sine wave |
| Battery chemistry | LiFePO4 (LFP) |
| Expandable battery | Yes |
| Rated cycles | 3,000 |
| Third-party solar | MC4 panels supported |
| Lifetime cost | $0.35/kWh |
Alternatives to consider
- Jackery Explorer 300 Plus — 288 Wh / 300 W at $299.99 · compare head-to-head →
- Anker SOLIX C300 — 288 Wh / 300 W at $230 · compare head-to-head →
Common questions
How long will the EcoFlow RIVER 3 Plus run a refrigerator?
About 2 hours of compressor running time — which at a realistic duty cycle covers roughly 0.2 days of normal fridge use. Estimates use usable capacity (85% of rated) and carry ±15%.
Can the RIVER 3 Plus run a CPAP?
Yes — a 40 W CPAP runs about 0 full nights per charge without humidification. A heated humidifier roughly triples the draw and cuts nights to ~0.
Can it run a space heater?
No — a typical 1,500 W space heater exceeds this unit's 600 W output. An electric blanket (100 W) runs ~2 hours and warms a person, not a room.
How fast does the RIVER 3 Plus recharge from solar?
At its 220 W input cap, roughly 1.6 hours of good sun for a full refill (real-world 80% derate applied). Cloud cover stretches that substantially.