EcoFlow RIVER 3
EcoFlow RIVER 3 is best suited for: cpap, evacuation go bag, baby monitor nursery backup (scored 88.5/100 for its top-fit use-case). Note: 1 field(s) still need verification before full publish — see methodology.
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The EcoFlow RIVER 3 is a compact portable power station with a 245Wh battery and a 300W continuous AC output. Its inverter is confirmed pure sine wave, so it runs CPAP machines and pump motors safely. It scores 88.5/100 for CPAP backup, its strongest fit in this dataset.
Best For
Full Specifications
| Brand | EcoFlow |
|---|---|
| Model | RIVER 3 |
| Category | standalone |
| Capacity | 245 Wh |
| Continuous AC Output | 300 W |
| Surge Output | Not stated |
| Battery Chemistry | LiFePO4 |
| Inverter Type | Pure Sine Wave |
| Weight | 3.54 kg |
| Price | 199 USD |
| AC Recharge Time (0-100%) | 1 hrs |
| Max Solar Input | 110 W |
| Warranty | 2 years |
The base RIVER 3 model carries only a 24-month warranty — shorter than RIVER 3 Plus/Max, which get EcoFlow’s 5-year tier. Easy to mix up when comparison-shopping. See the full warranty comparison across all brands →
At 300W continuous, it has an unconfirmed surge rating, so this project does not assume it can start a typical well or sump pump motor. Its 245Wh battery runs a 75W CPAP with a heated humidifier for roughly 2.5 hours and a 100W mini-fridge for roughly 1.8 hours, after a 25% AC-inverter efficiency loss. At $199, that works out to $0.81 per watt-hour. It accepts up to 110W of solar input for off-grid recharging.
Pros & Cons
- Confirmed pure sine wave inverter — safe for CPAP and other sensitive electronics
- Very portable at 3.54kg
- Shorter 2-year warranty than most competing models in this dataset
Who Should Avoid This
Avoid if: Shorter 2-year warranty than most competing models in this dataset.
Methodology & Sources
Verified: 2026-09-13 · Confidence: Medium · Method v1.0
- surge_output_w: has 'X-Boost' feature supporting loads up to 600W, but this is a different mechanism than a traditional surge spec — not mapped to surge_output_w to avoid conflating the two