EcoFlow RIVER 3 Max
A 572 Wh LiFePO4 portable power station with 600 W of output, 650 W mains charging and 220 W solar input, expandable to 858 Wh.
- Best for compact backup
- Power station
- 572 Wh
- 5-year warranty
- Made by EcoFlow.
- Capacity: 572 Wh with LiFePO4 cells rated for 3,000 cycles to 80%. It is the RIVER 3 Plus with an EB300 extra battery.
- Output: 600 W in total across 3 AC outlets, with X-Boost up to 1,200 W and a UPS switchover under 10 ms.
- Charges from the mains at 650 W (1.3 hours on EcoFlow's table) or from solar at up to 220 W.
- EcoFlow's Australian page showed it as sold out and open to pre-order. We found no RIVER 3 Max page on EcoFlow's UK, EU, US or German sites.
Not tested by us
We have not tested the EcoFlow RIVER 3 Max. The figures on this page come from the sources listed at the end of the page, checked on 13 November 2026, and we do not show prices. "Best for" is based on what the maker says the product is designed for, not on our own tests.
Key figures
572 Wh
Capacity (expandable to 858 Wh)
600 W
AC output (1,200 W X-Boost)
5 years
Warranty
Specifications
Last checked on 13 November 2026. The grey text under each name explains what the value means. To see it next to other products, compare it in our comparison tool.
| Specification | Value |
|---|---|
| Storage | |
| CapacityHow much energy the battery stores. Bigger means longer runtime or more of your own solar power used later. | 572 Wh (RIVER 3 Plus with an EB300 extra battery) |
| Battery chemistryLFP (lithium iron phosphate) cells are known for long life and stable behaviour with heat. | LiFePO4 |
| Cycle lifeHow many full charge and discharge cycles the cells are rated for before they hold less than the stated share of their original capacity. | 3,000 cycles to 80% capacity |
| ExpansionExtra battery units that add storage to the same system. | Up to 858 Wh in total. EcoFlow lists the EB300 (286 Wh) and EB600 (572 Wh) extra batteries, connected without cables by pogo pins |
| Output | |
| AC output (continuous)The power it can deliver all the time. Add up the watts of what you want to run at once and stay below this. | 3 outlets, 600 W in total |
| AC output (surge)A short burst above the continuous rating, for appliances that draw more power when they start. | 1,200 W |
| X-BoostA mode that can run some devices above the normal output rating by lowering the voltage it supplies. Not suitable for every device. | Up to 1,200 W for devices that allow it |
| USB-APorts for phones, tablets and small devices. | 2 ports, 5 V 2.4 A, 12 W max per port (24 W in total) |
| USB-CPorts for laptops, phones and tablets. Power delivery up to 100 W can charge most laptops. | 1 port, 100 W max (5/9/12/15 V 3 A, 20 V 5 A). EcoFlow's page adds that an extra battery gives a 140 W USB-C port |
| Car outletA 12 V socket like the one in a car, for car accessories. | 1 outlet, 12.6 V 10 A, 126 W max |
| Charging | |
| AC chargingHow fast it charges from a wall socket. Higher means a shorter wait. | 650 W |
| Time to charge from the mainsHow long a full charge takes from a wall socket. | 0-100% in 1.3 hours on the specification table (the page's feature list says 2.3 hours) |
| Solar inputHow much solar panel power it accepts. A higher figure fills the battery faster on a sunny day. | 220 W max |
| Solar charging timeHow long a full charge takes from solar panels, in the conditions the maker names. | 0-100% in 3.2 hours |
| Car chargingCharging from a car's 12 V or 24 V socket while driving. Slow, but useful on the road. | 220 W, 0-100% in 7.2 hours |
| Backup switchover (EPS)What happens when the grid fails. EPS means it takes over automatically. | Under 10 ms (UPS) |
| Pass-through chargingWhether it can power devices while it is itself being charged. | Not stated |
| Solar and off-grid | |
| Works with solar panelsWhether you can charge it from solar panels. Yes means a built-in solar input or a compatible solar setup; read the detail for the voltage and power limits. | Yes: built-in solar input, 220 W max. |
| Off-grid useWhether the maker describes it running with no grid connection at all, for example in a cabin, van or off-grid home. Backup only means it covers power cuts but needs the grid the rest of the time. | Yes: runs devices from its own battery with no mains connection and recharges from solar. |
| Housing and warranty | |
| Dimensions (L × W × H)Check the space before you buy, including room around it for airflow and cables. | 234 × 232 × 238 mm (EcoFlow does not say which number is which axis) |
| WeightMatters for lifting, wall mounting and moving it. | 8.4 kg |
| Operating temperatureThe range it is rated to work in. Cold and heat can reduce performance. | Charging 0 to 45 °C; discharging -10 to 45 °C; best 20 to 30 °C; storage 20 to 30 °C |
| Noise levelFan noise while working. | Below 30 dB |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | Not listed in the RIVER 3 Max table. The page text for the RIVER 3 Max Plus says IP54 battery protection |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | 5 years (EcoFlow Australia warranty policy lists the RIVER 3 Max in its 5-year group) |
How long will it run your devices?
Choose how many of each device you want to run at the same time. The wattages are typical figures, so check the label on your own devices.
| Device | Typical power | How many |
|---|---|---|
| 10 W | ||
| 10 W | ||
| 15 W | ||
| 60 W | ||
| 80 W | ||
| 80 W | ||
| 40 W | ||
| 1,000 W | ||
| 2,000 W | ||
| 1,000 W | ||
| W |
The estimate assumes 85% of the rated capacity is usable after conversion losses. EcoFlow does not state this figure, so we use a cautious assumption. Real running times vary with temperature, battery age and how each device draws power.
Compatible with
What EcoFlow says this product works with. Anything not listed here is not confirmed.
- Extra batteries
- EB300 (286 Wh) and EB600 (572 Wh). The RIVER 3 Plus takes one extra battery at a time and EcoFlow lists up to 858 Wh in total.
- Solar panels
- Solar input is 220 W at most. EcoFlow names its 45 W portable solar panel (USB-C) as a match.
- Generators
- Generator input of 650 W (0-100% in 1.3 hours).
- Alternator charger
- EcoFlow sells the RIVER 3 Max with a 500 W Alternator Charger (220 W max alternator charging).
Rules where you live
A portable power station is not wired into your home, so it is simple to use almost anywhere. Connecting one to your home circuits to power the house is different, and the rules for that vary by country. See our country guides for the rules, incentives and prices where you live.
Strengths and things to check
Strengths
- 600 W continuous with 1,200 W X-Boost
- 650 W mains charging, 1.3 hours on EcoFlow's table
- 220 W solar input
- Expandable to 858 Wh without cables
- 5-year warranty on EcoFlow Australia's policy
Worth checking before you buy
- Only an EcoFlow Australia page shows it: sold out and open to pre-order at the time of checking
- The photo shows an Australian-style AC socket
- EcoFlow's page gives two mains charging times (1.3 and 2.3 hours)
- IP rating and pass-through charging are not listed for this model
- Not a home battery: do not connect it to your home circuits in a way that lets it feed the house
Change log
We record changes to this page here, so you can see when figures such as the warranty were last updated.
- 13 November 2026
- Page published. Warranty at publication: 5 years (EcoFlow Australia warranty policy). EcoFlow's Australian page showed the RIVER 3 Max as sold out and open to pre-order; we found no RIVER 3 Max page on EcoFlow's UK, EU, US or German sites.
Where this information comes from
We have not tested the RIVER 3 Max. Every figure above comes from the RIVER 3 Max product page on EcoFlow's Australian site (the column headed RIVER 3 Max Specs) and from EcoFlow Australia's warranty policy, last checked on 13 November 2026. A value that these pages do not state is shown as not stated. The RIVER 3 Max is a different product from the RIVER 3 Plus and the RIVER 3 Max Plus.
We do not show prices, because they change often and differ between sellers.
- Manufacturer EcoFlow Australia RIVER 3 Max Portable Power Station (572Wh) page
- Manufacturer EcoFlow Australia warranty policy
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Common questions about EcoFlow RIVER 3 Max
What is the difference between the RIVER 3 Plus and the RIVER 3 Max?
EcoFlow's page lists the RIVER 3 Max as the RIVER 3 Plus with an EB300 extra battery: 572 Wh instead of 286 Wh, 8.4 kg instead of 4.7 kg and 650 W mains charging instead of 360 W. Both list 600 W of output.
What can the RIVER 3 Max run?
EcoFlow rates it at 600 W continuous, 1,200 W surge, and X-Boost up to 1,200 W for suitable heating devices. Divide 572 Wh by the load for a rough running time; our calculator on this page does this.
Can the RIVER 3 Max be expanded?
EcoFlow lists up to 858 Wh, using the EB300 (286 Wh) or EB600 (572 Wh) extra batteries that connect by pogo pins. The page does not spell out which combination reaches 858 Wh for the RIVER 3 Max itself.
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