Spec score 7.8
572Wh, 990W, LiFePO4
+572Wh capacity for small device and appliance use
+990W output for running several devices at once
+LiFePO4 battery for a long-lasting battery chemistry
$399.00
as of 11/04/2026 18:35 PST - DetailsProduct details
EF ECOFLOW Portable Power Station River 3 Max, 572Wh 990W | 90 Min Fast Charging, LFP Battery, <10 MS UPS, <30 dB
$399.00as of 11/04/2026 18:35 PST - Details
View on AmazonSpec score7.8
Pros
+572Wh capacity for small device and appliance use
+990W output for running several devices at once
+LiFePO4 battery for a long-lasting battery chemistry
+UPS switchover under 10 ms for backup power
+Under 30 dB noise level
Compared with the 1 Portable Power Stations on this page+UPS mode: only 11 of 39 here have one
−990W ac output: 25 of the 32 here have a higher ac output
−572Wh battery capacity: 28 of the 37 here have a higher battery capacity
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