The model. Your possibilities.
EcoFlowRIVER 3 Max Plus
An 858Wh modular setup built from the RIVER 3 Plus and extra battery, with low carrying weight, 600W ordinary AC output and 220W solar input.
Manufacturer specifications · check your regional version
- Battery capacity
- 858 Wh
- Continuous AC output
- 600 W
- Weight
- 10.8 kg
- Solar input, maximum
- 220 W
Your setup, made clear
What would you like to power?
Start with an example or add your own devices. The estimate updates as you go.
Example: workspace
2 devicesEverything that needs to run together.
Usage, connection & starting peak
Use measured power where possible. A listed peak does not confirm its duration or the real starting behaviour.
Usage, connection & starting peak
Use measured power where possible. A listed peak does not confirm its duration or the real starting behaviour.
Reserve & conversion loss85% efficiency · 10% reserve
Example values are estimates. Use the real power draw of your devices for a more personal result.
Look closer, when you want to.
What can I connect?Cables, ports and solar input
What comes in the box?
AC charging is normally supported, but package contents vary by bundle and country.
Solar connection
XT60i
11–55V · 8A · 220W max per input
Check the solar cable →USB-C
1 × 100W
For 12V devices, also verify voltage, polarity, current and fuse—not only the plug shape.
Check my connection →Open Solar Lab →Specifications & sourcesManufacturer data, separate from estimates
- Continuous AC output
- 600 W
- Solar input
- 220 W · 11–55 V · 8 A per input
- Solar connector
- XT60i
- USB-C
- 1 × 100W
- Weight
- 10.8 kg · 23.8 lb (source)
- Transfer behaviour
- <10ms UPS
- Dimensions
- 234 × 232 × 286mm
- Battery type
- LiFePO₄
A transfer time is not a promise of uninterrupted UPS operation. Test critical equipment.
Evidence and source details
EcoFlow lists 858Wh combined capacity, 600W ordinary AC output, 220W solar input, 100W USB-C, under-10ms UPS transfer and 10.8kg combined weight.
- Source type
- Manufacturer specification
- Source region
- Philippines specification
- Last checked
Your Power Setup has not physically tested this unit. Calculations are not reviews or proof of compatibility.
Open manufacturer source ↗Is this model right for me?Uses and regional considerations
Low-wattage backup, remote work and travel where compact size matters more than high AC or solar ceilings.
The 1,200W X-Boost claim is not ordinary 1,200W inverter output, and this configuration depends on the attached extra battery. Check the regional bundle carefully.
Plan what I need first →Simple runtime examplesCalculated ranges, not physical tests
- Starlink Mini25–40 W
- 17.2–30.9 h
- Laptop workstation45–100 W
- 6.9–17.2 h
- CPAP planning load40–60 W
- 11.4–19.3 h
- 12V fridge while running35–55 W
- 12.5–22.1 h
A fridge cycles on and off. Actual runtime can differ from these continuous-use examples.
United States · 120V / 60Hz
- Type A/B · NEMA 1-15 / 5-15
- Higher-power outlets require an exact-system check
- an applicable United States safety certification mark
- Verify it on the physical US unit.
- Grid context
- United States · 120V / 60Hz
- Checked
- US · 2026-08-20
Shared technical data does not prove a United States model, outlet layout, warranty, seller or availability.
Calculate runtimeQuestions about this model
How much energy does the RIVER 3 Max Plus store?
The manufacturer lists 858 Wh. Conversion loss and a reserve reduce the energy available to your devices.
How much power can it deliver?
Normal continuous output is 600 W. A short surge figure does not prove that every motor or appliance can start.
Which solar panel can I use?
The documented input range is 11–55 V, up to 220 W total. Also check current, cold open-circuit voltage, connector and polarity.
Still comparing?
Compare capacity, output and the exact regional version.