EF ECOFLOW RIVER 3 Max Portable Power Station, 572Wh LFP Battery, UPS

For a campsite, a home office backup, or keeping small devices powered during an outage, this portable station combines battery storage with several ways to connect devices. Its listing highlights a 572Wh bundle and UPS support, while the detailed package information describes a RIVER 3 Plus with an EB300 extra battery. There is a naming and output-rating mismatch in the supplied details, so the exact configuration matters when comparing it with other stations.

Tips for day-to-day use

The UPS feature is intended for devices that benefit from a quick backup-power handoff: the detailed description gives a switchover time under 10 ms and identifies home-office and gaming setups as use cases. It also describes alerts through the display, app, and software, plus automatic data saving on low battery for compatible PC or NAS setups. That makes the station relevant for protecting active work, rather than only for occasional phone charging.

For camping, the AC outlets, USB-A and USB-C ports, car-charging output, and built-in light offer several ways to power or charge gear from one unit. Bluetooth and Wi-Fi app control add options for changing charging settings remotely. A practical setup might use the AC output for a small appliance and USB ports for personal electronics, actual runtime will depend on the connected devices and their power draw, and the provided details do not give runtime estimates for specific loads.

Product specs

• Name: Listed as RIVER 3 Max, detailed package information identifies the RIVER 3 Plus with EB300 extra battery
• Type: Portable power station bundle
• Capacity: 572Wh total, described as a 286Wh RIVER 3 Plus and 286Wh EB300
• Battery: LiFePO4, the specifications also list lithium-ion cell composition
• Output: Detailed feature copy states 600W steady output and up to 1,200W with X-Boost, the product name states 990W
• UPS: Under 10 ms switchover, three AC outlets are described as UPS-supported
• Connectivity: Bluetooth and Wi-Fi, USB-A, USB-C, AC, and car-charging outputs
• Charging: AC charging is listed as 0–100% in 1 hour, solar input is listed as up to 220W
• Dimensions and weight: 9.2 x 9.1 x 5.8 inches and 10.4 lbs for the RIVER 3 Plus unit
• What’s included: RIVER 3 Plus, EB300 extra battery, AC and car charging cables, UPS communication cable, and user manual

The mismatch between the RIVER 3 Max name and RIVER 3 Plus bundle details, as well as the different output figures, is the main buying caveat. The supplied dimensions and weight are for the RIVER 3 Plus unit, not clearly for the complete bundle. The battery is described as having 3,000 charging cycles and IP54 protection, those details should not be read as a runtime guarantee or as a rating for the entire station.

Benefits

The expandable setup is useful if a single compact battery is not enough: the EB300 adds capacity and includes its own 140W USB-C port, with a Pogo Pin connection for attachment. Compared with buying a basic power bank for phones alone, this bundle offers AC power and UPS functionality, compared with a larger, more demanding power setup, its listed capacity and portability keep the focus on smaller devices and backup use.

Buyer feedback describes satisfaction with battery life and power performance. Some buyers report running a CPAP for five nights or a Wi-Fi router for up to three days, but those are individual reports, not promised runtimes, connected equipment and usage determine how long the station lasts. Worth considering if you want a portable setup with an included expansion battery and UPS features, and can match its output to your devices.

When it makes sense

This bundle is most relevant for camping, portable charging, or short-term backup for electronics such as a router or computer setup. It’s not for you if you need a clearly consistent output rating before choosing: the product name says 990W, while the detailed feature copy gives 600W steady and 1,200W with X-Boost. Confirming which model and configuration the listing refers to is especially important here, the bundled capacity is useful context, but it does not resolve that specification discrepancy.