EcoFlow RIVER 2 Max vs EcoFlow RIVER 3
EcoFlow RIVER 2 Max
EcoFlow RIVER 3The RIVER 2 Max holds 109% more energy, and that is the gap worth deciding on: it runs longer between charges. They are level on wall recharge time and rated cycle life. Scored across this catalogue they land at 5.3 and 3.9 out of 10.
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EcoFlow RIVER 2 MaxIt leads by 109% on capacity and 67% on AC output. That is the combination most people are actually choosing between.
Check price on AmazonEcoFlow RIVER 3It leads by 74% on weight. Those are the axes to buy it for, and the only ones.
Check price on AmazonThe specifications side by side
| Specification | RIVER 2 Max | RIVER 3 |
|---|---|---|
| Score | 5.3/10 | 3.9/10 |
| Capacity | 512 Wh | 245 Wh |
| AC output | 500 W | 300 W |
| Surge | 1,000 W | Not published |
| Cell chemistry | LFP | LFP |
| Cycle life | 3,000 cycles to 80% | 3,000 cycles to 80% |
| Wall recharge | 1 hour | 1 hour |
| Max solar input | 220 W | 110 W |
| UPS switchover | 30 ms | No UPS function |
| Weight | 13.4 lb (6.1 kg) | 7.7 lb (3.5 kg) |
| Extra batteries | Not expandable | Not expandable |
The rows worth your attention are the ones where the gap is large enough to change a decision. On this pair that means capacity and AC output. Everything else is close enough to ignore.
Where they really separate: capacity
This is the one gap large enough to decide the question. The RIVER 2 Max comes out 109% ahead on capacity, and the reason that matters is practical rather than arithmetic.
Capacity sets how long a unit runs something, not what it can run. A larger pack behind the same inverter buys hours, not new appliances.
The other differences, in order of size
- AC output. The RIVER 2 Max leads by 67%.
- Weight. The RIVER 3 leads by 74%.
- Maximum solar input. The RIVER 2 Max leads by 100%.
None of these is decisive on its own. Taken together they describe two units built to slightly different briefs, which is worth knowing before you choose on the headline figure alone.
What each one will run
Same arithmetic for both: usable watt hours after an assumed 85% inverter efficiency, divided by average draw rather than peak.
EcoFlow RIVER 2 Max
| Appliance | Typical draw | Estimated run time |
|---|---|---|
| Fridge | 120 W | 10 h 22 min |
| CPAP machine | 45 W | 9 h 40 min |
| Router and modem | 15 W | 29 h 1 min |
| Television | 90 W | 4 h 50 min |
| Microwave | 1200 W | 0 h 22 min |
EcoFlow RIVER 3
| Appliance | Typical draw | Estimated run time |
|---|---|---|
| Fridge | 120 W | 4 h 57 min |
| CPAP machine | 45 W | 4 h 38 min |
| Router and modem | 15 W | 13 h 53 min |
| Television | 90 W | 2 h 19 min |
| Microwave | 1200 W | 0 h 10 min |
For your own appliance and its real wattage, the run time calculator shows the assumptions on screen and lets you move them.
Common questions
Is the RIVER 2 Max or the RIVER 3 better value?
This site does not print prices, because a stale price is worse than none. Check both on Amazon, then weigh the gap against the differences above. A 109% lead on capacity is worth paying for only if that axis matters to your use.
Can I compare their surge ratings directly?
Not always. BLUETTI's Lifting Power and EcoFlow's X-Boost run appliances above rated output by lowering voltage, which suits a kettle or a heater but not a motor or a computer. A conventional surge rating means something else: a brief tolerance for start-up current. The table keeps each maker's own label attached.
Is the newer one simply a better version?
Not automatically. Makers revise units to hit a different price or size, and a newer model sometimes drops something the older one had. Read the table rather than the generation number.