EcoFlow STREAM Max
A 1.92 kWh plug-and-play battery with a built-in inverter and two solar inputs, the smallest of the Ultra, Pro and Max STREAM units.
- Best for small solar setups
- Plug-in battery
- 1.92 kWh
- 2 solar inputs
- Made by EcoFlow.
- Capacity: 1.92 kWh with LFP cells; up to six STREAM units can be combined in one system.
- Output: 1,200 W from the AC outlet, and 600 W or 800 W rated to the grid depending on the model.
- Solar: two MPPT inputs for up to 1,000 W of panels.
- Rules: whether you can use it as a plug-in battery depends on your country.
Not tested by us
We have not tested the EcoFlow STREAM Max. The figures on this page come from the sources listed at the end of the page, checked on 11 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
1.92 kWh
Capacity per unit
1,200 W
AC outlet output
1,000 W
Solar input, 2 MPPT
Specifications
Last checked on 11 November 2026. The grey text under each name explains what the value means.
| Specification | Value |
|---|---|
| Storage | |
| CapacityHow much energy the battery stores. Bigger means longer runtime or more of your own solar power used later. | 1.92 kWh |
| Battery chemistryLFP (lithium iron phosphate) cells are known for long life and stable behaviour with heat. | LFP (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. | 6,000 cycles (0.5C charge and discharge at 25 °C) |
| ExpansionExtra battery units that add storage to the same system. | Up to six STREAM devices in one system, mixed with STREAM Ultra, Pro, AC Pro, AC or Ultra X |
| Power | |
| AC outputThe power it can deliver through its sockets or inverter, in watts. | 1,200 W from the AC outlet, which only works while the unit is on-grid |
| AC output, grid-connectedThe lower output allowed when it feeds power into the home's circuits or the grid. | 600 W (EF-EA-HD-M2K-600) or 800 W (EF-EA-HD-M2K-800), depending on the model |
| Parallel modeLinking units so their outputs add up. | Up to 2,300 W to connected appliances with at least two units in parallel |
| AC charging inputHow fast it charges from a wall socket or the grid. | 1,050 W |
| Efficiency and standby useLosses when charging, discharging and doing nothing. | Not stated |
| Solar | |
| Solar inputHow much solar panel power it accepts. A higher figure fills the battery faster on a sunny day. | 1,000 W maximum, via 2 MPPT inputs of 500 W each, 15-60 V, 14 A per input |
| Connection and housing | |
| Dimensions (W × D × H)Check the space before you buy, including room around it for airflow and cables. | 255 × 284 × 458 mm (the manual gives three numbers without naming the axes; EcoFlow's UK page lists the STREAM Pro as 284 × 255 × 458 mm) |
| WeightMatters for lifting, wall mounting and moving it. | 22.0 kg |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | IP65 |
| Operating temperatureThe range it is rated to work in. Cold and heat can reduce performance. | -20 to 55 °C; performance may be derated above 35 °C |
| Noise levelFan noise while working. | Not stated; the manual says it cools by natural convection with no fans |
| ConnectivityHow you monitor and control it, usually through an app. | Wi-Fi and Bluetooth, with the EcoFlow app |
| Warranty | |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | Not stated for the STREAM Max. EcoFlow's UK page lists 10 years for the STREAM Ultra, Pro and AC Pro, but its specification tables do not include the Max |
Compatible with
What EcoFlow says this product works with. Anything not listed here is not confirmed.
- Extra capacity
- Other STREAM Max, Ultra, Pro, AC Pro, AC and Ultra X units, up to six in one system.
- Solar panels
- EcoFlow or third-party panels with an MPPT voltage of 16-60 V and a maximum of 14 A per input.
- Smart meters and plugs
- EcoFlow lists compatible smart plugs and smart meters, controlled through the EcoFlow app. Only one type of sensor can be used at a time.
- Microinverters
- EcoFlow recommends adding only one microinverter; the EcoFlow PowerStream and STREAM microinverters are listed.
Rules where you live
Rules for plug-in batteries differ by country. EcoFlow's manual says direct plug-in to a home outlet is only for places where local regulations allow it, and that in regions such as the United Kingdom a qualified electrician connects it to a circuit breaker. In Great Britain, plug-in solar kits of up to 800 VA have been legal since 27 August 2026, but the rules exclude plug-in batteries.
Check the rules, incentives and tariffs for your own country in our country guides.
Strengths and things to check
Strengths
- Battery, inverter and two solar inputs in one unit
- Modular: up to six STREAM devices in a system
- IP65 and a -20 to 55 °C operating range
- No fan: natural convection cooling
Worth checking before you buy
- Whether it counts as a plug-in product depends on your country: check the rules below
- Two solar inputs, fewer than the STREAM Pro (three) and Ultra (four)
- Warranty and noise level not stated for this model
- Weighs 22 kg
Change log
We record changes to this page here, so you can see when figures such as the warranty were last updated.
- 11 November 2026
- Page published. The STREAM Max is an option on EcoFlow's UK STREAM Ultra/Pro/Max page, which lists a 10-year warranty for other STREAM models but not for the Max. Warranty not stated.
Where this information comes from
We have not tested the STREAM Max. Every figure above comes from EcoFlow's STREAM Max user manual and, for the options and warranty of the STREAM family, EcoFlow's UK STREAM Ultra/Pro/Max page, last checked on 11 November 2026. Where those give no value, we say so.
We do not show prices, because they change often and differ between sellers.
- Manufacturer EcoFlow STREAM Max user manual (EU/UK)
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Common questions about EcoFlow STREAM Max
Can I use the STREAM Max as a plug-in battery in my country?
It depends on local rules. EcoFlow's manual says direct plug-in is only for places where regulations allow it, and a qualified electrician must connect it to a circuit breaker in regions such as the United Kingdom. In Great Britain, plug-in solar kits up to 800 VA are legal since 27 August 2026 but the rules exclude plug-in batteries.
What is the difference between the STREAM Max and the STREAM Pro?
Both have a 1.92 kWh battery. The manual gives the STREAM Max two solar inputs (1,000 W) against three (1,500 W) for the STREAM Pro. See our STREAM Pro page.
Why does the STREAM Max have two grid output ratings?
The manual lists two model codes: EF-EA-HD-M2K-600 with 600 W and EF-EA-HD-M2K-800 with 800 W rated grid output. The 1,200 W figure is the AC outlet output.
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