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Entry class

EcoFlow RIVER 3 Plus

The sub-300 Wh entry point: 600 W inverter, sub-10 ms UPS switchover, ten pounds, and expandable when you outgrow it.

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Best for

Desk UPS duty, camping, and finding out what you actually need

Specifications

Capacity286 Wh LiFePO4 (expandable to 858 Wh)
Cycle life3,000 cycles to 80%
AC output600 W continuous (X-Boost 1,200 W)
UPS switchover<10 ms
Weight10.4 lb

Specifications as published by EcoFlow. Confirm against the current spec sheet before buying — manufacturers revise models without renaming them.

What's good

  • Sub-10 ms switchover — router, modem and a desktop ride through outages
  • Ten pounds goes anywhere; this is the one that actually leaves the house
  • Expansion battery path when 286 Wh stops being enough

What's not

  • 286 Wh runs a refrigerator for about 90 minutes — this is not an outage machine
  • X-Boost's 1,200 W is for resistive loads only; motors get 600 W

Our verdict

The right first purchase for a lot of people: it solves the internet-and-laptop outage problem for a fraction of the big units' cost, and teaches you your real capacity needs before you spend four figures. Just don't ask it to run the kitchen.

Compare with the alternatives

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