EcoFlow RIVER 2 Max 500 vs EcoFlow RIVER Max
Two mid-size power stations, number by number. Neither is ranked above the other. Every spec comes from each maker's manual or product page; tap a station for the source.
- Bigger battery: EcoFlow RIVER Max, 576 Wh vs 499 Wh.
- More AC output: EcoFlow RIVER Max, 600 W vs 500 W.
- Higher surge: EcoFlow RIVER Max, 1,200 W vs 1,000 W.
- More solar input: EcoFlow RIVER 2 Max 500, 220 W vs 200 W.
- Higher solar voltage limit: EcoFlow RIVER 2 Max 500, 50 V vs 25 V.
- Lighter: EcoFlow RIVER 2 Max 500, 13.2 lb vs 17 lb.
- Lower brand-store price: EcoFlow RIVER 2 Max 500, $329 vs $449.
RIVER 2 Max 500 and RIVER Max are the same size class: within 77 Wh of each other. RIVER 2 Max 500 is the lightest at 13.2 lb. RIVER 2 Max 500 takes the most solar at 220 W, so it refills fastest. RIVER 2 Max 500 is the cheapest at $329, and it also leads on solar input.
How long they run common devices
| Device | EcoFlow RIVER 2 Max 500 | EcoFlow RIVER Max |
|---|---|---|
| Fridge (60 W) | 7 hours | 8 hours |
| CPAP (40 W) | 11 hours | 12 hours |
| Starlink (100 W) | 4 hours | 5 hours |
| Laptop (60 W) | 7 hours | 8 hours |
On a full charge, assuming 85% of the battery is usable. Real devices vary; check the label on yours.
Every spec side by side
| Spec |  EcoFlow |  EcoFlow |
|---|---|---|
Battery Wh, size | 499 Wh fridge about 7 hours | 576 Wh fridge about 8 hours |
AC output W, continuous | 500 W Fridge, CPAP, laptops, lights | 600 W Fridge, CPAP, laptops, lights |
Surge W, a second or two | 1,000 W motor start-ups | 1,200 W motor start-ups |
Solar input W, max | 220 W full in about 3 hours | 200 W full in about 4 hours |
Solar voltage range V, panels must fit | 11 to 50 V 1 panel, or 2 in parallel | 10 to 25 V 1 panel, or 2 in parallel |
Solar inputs count | 1 input Solar input | 1 input Solar input |
Weight lb | 13.2 lb one hand | 17 lb one hand |
Wh per pound battery for the weight | 38 Wh/lb higher is denser | 34 Wh/lb higher is denser |
Price brand store | $329 0.66 $/Wh | $449 0.78 $/Wh |
Price per Wh what you pay for storage | $0.66 lower is better value | $0.78 lower is better value |
| Buy | $329 · Details Brand store, Oct 28, 2026 | $449 · Details Brand store, Oct 28, 2026 |
Which solar panels work with each
Our checker at 20°F, using each maker's voltage and current rules. Tap a verdict for the wiring and cables.
Where to buy
Out of stock at the EcoFlow store when we checked
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