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EcoFlow River 2 Max
#17 of 20 in medium · #43 of 56 overall · all EcoFlow models
3.1
Mid-size River with four AC outlets and 100W USB-C; full recharge in roughly an hour.
512 Whcapacity
500 Wcontinuous output
LiFePO43,000 cycles
13.4 lbweight
$349street price, being verified
Runs a 500 W load about 0.9 h$682 per kWh of capacityFull AC recharge in about 0.9 h
Ratings
Includes independent measurements from AUTO BILD / COMPUTER BILD.
Each rating places this unit among the others on a 0.5–5 scale, within its size class for the measures that scale with size and across the whole catalog for the rest. Weighted together they give the overall 3.1. Formula and weights.
Specifications
- Capacity
- 512 Wh
- Max expanded
- 512 Wh
- AC output
- 500 W continuous
- Surge
- 1,000 W
- Chemistry
- LiFePO4
- Cycle rating
- 3,000
- Weight
- 13.4 lb
- AC recharge
- 660 W
- Solar input
- 220 W
- UPS switchover
- 30 ms
- AC outlets
- 4
- USB-C PD max
- 100 W
- 240V output
- No
- App
- Yes
- Price per kWh
- $682
- Released
- 2022
Independent measurements
| Metric | Value | Source |
|---|---|---|
| Usable capacity, % of rated Incandescent-bulb constant load (wattage not stated); 436 Wh delivered of 512 rated (table prints the unit as Wh instead of kWh); multi-model table - verify | 85.2 % | AUTO BILD / COMPUTER BILD |
| AC recharge time Empty to full on a 230V socket at up to 644W input; multi-model table - verify | 73 min | AUTO BILD / COMPUTER BILD |
| Noise Peak during operation; load and distance not stated; multi-model table - verify | 50.7 dBA | AUTO BILD / COMPUTER BILD |
How it compares with its neighbors
| # | Model | Wh | AC W | Chem. | Cycles | lb | AC in W | Solar W | $/kWh | Score |
|---|---|---|---|---|---|---|---|---|---|---|
| 14 | EcoFlow Delta 2 | 1,024 | 1,800 | LiFePO4 | 3,000 | 27.0 | 1,200 | 500 | 683 | 3.4 |
| 15 | Jackery Explorer 1000 Plus | 1,264 | 2,000 | LiFePO4 | 4,000 | 32.0 | 800 | 800 | 672 | 3.4 |
| 16 | EcoFlow River 2 Pro | 768 | 800 | LiFePO4 | 3,000 | 17.2 | 940 | 220 | 650 | 3.3 |
| 17 | EcoFlow River 2 Max | 512 | 500 | LiFePO4 | 3,000 | 13.4 | 660 | 220 | 682 | 3.1 |
| 18 | Bluetti EB55 | 537 | 700 | LiFePO4 | 2,500 | 16.5 | 200 | 200 | 650 | 2.7 |
| 19 | Jackery Explorer 500 | 518 | 500 | NMC | 500 | 13.3 | 90 | 100 | 770 | 2.0 |
| 20 | Goal Zero Yeti 500X | 505 | 300 | NMC | 500 | 12.9 | 60 | 120 | 889 | 1.7 |