EcoFlow DELTA 3 Models: Standard, Plus, Max and Max Plus

The EcoFlow DELTA 3 Plus is our compact pick for solar charging: it keeps the standard DELTA 3's 1,024Wh and 1,800W while adding a second solar input and faster USB-C. Choose DELTA 3 Max for 2,048Wh in one box, or Max Plus for that same capacity with 3,000W output and battery expansion. Choose the standard DELTA 3 when its single solar input and 100W USB-C are sufficient.

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Quick picks: choose the station before the bundle

• DELTA 3: our simpler choice if you charge mainly from the wall.
• DELTA 3 Plus: our choice for a compact station with more solar and USB-C charging capability.
• DELTA 3 Max: our choice when you need more stored energy without separate batteries.
• DELTA 3 Max Plus: our choice for higher running loads and future battery expansion.

These are US models. The table covers these four stations; EcoFlow also lists DELTA 3 Classic and Ultra Plus, while the extra-battery manual names DELTA 3 1500. Those names need their own specifications. For other brands, use our 1kWh comparison; for other sizes, see portable power stations.

Sources: EcoFlow's DELTA 3 specifications, Plus specifications, Max manual, Max Plus specifications and expansion requirements. Output is shared across the AC outlets; it is not the allowance at every socket.

DELTA 3: choose standard when its charging ports are enough

Standard and Plus share the capacity, continuous output and approximately 27.6 lb weight shown above. Standard provides two 100W USB-C ports and 500W solar input; Plus provides two 140W USB-C ports and two 500W solar inputs. Both advertise a 56-minute full wall recharge at 1,500W.

Our recommendation: choose standard for its existing capability, rather than assuming Plus runs an appliance longer. USB-C maximum power also requires a device and cable supporting the corresponding protocol, as EcoFlow's manual explains.

See the standard DELTA 3 at EcoFlow.

DELTA 3 Plus: our compact pick for solar

Plus is the useful upgrade when you can use both solar inputs or its higher USB-C rating. Its 1,000W solar ceiling is split into 500W per input; a panel arrangement attached to one port cannot use the other port's allowance. The manual lists the same four expansion-battery families as standard: DELTA 3, DELTA 2, DELTA 2 Max and DELTA Pro 3.

Choose it for charging flexibility; move to a larger battery configuration when runtime is the problem.

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DELTA 3 Max: our pick for fixed capacity in one box

Max doubles the smaller stations' nominal capacity to 2,048Wh and raises continuous output to 2,400W. It has four AC outlets, approximately 44.8 lb weight and 500W solar input. Its US manual lists no extra-battery port; EcoFlow's UK comparison explicitly marks Max battery expansion “NO.” Only that expansion distinction is cross-checked there; charging and output figures here use US sources.

Choose Max when that fixed capacity suits the job. Do not order an extra battery expecting to upgrade it later; choose an expandable model at the outset if that is part of your plan.

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DELTA 3 Max Plus: our pick for higher loads and expansion

Max Plus still starts at 2,048Wh. Its benefits are 3,000W continuous AC output, 1,000W total solar input, two solar ports and extra-battery support. It weighs approximately 48.7 lb, according to its manual. Its US output remains 120V; for a different voltage requirement, start with our home battery backup guide.

One 2,048Wh Max Plus Smart Extra Battery gives 4,096Wh nominal combined capacity by addition. EcoFlow advertises expansion to about 10kWh, using two DELTA Pro 3 batteries and an expansion adapter. However, its station page says the adapter has been released while its footnotes still say it will be released soon. Confirm the exact adapter, battery cables and US availability before buying a two-battery configuration.

See DELTA 3 Max Plus at EcoFlow.

Extra batteries: match the full name

The DELTA 3 Series Smart Extra Battery, called DELTA 3 Smart Extra Battery in the manual, is the 1,024Wh accessory for doubling standard or Plus to 2,048Wh. Its manual lists an extra-battery cable in the box. EcoFlow's Plus store page separately specifies an Alternator Charger XT150 Output Cable for expansion; confirm the supplied cable against your exact station and battery.

The DELTA 3 Max Plus Smart Extra Battery is a different, 2,048Wh accessory. Its page says compatibility with standard and Plus requires a subsequent firmware release. Do not assume the shared DELTA name makes it ready to use with them. The Max Plus station manual also lists the smaller DELTA 3 battery and DELTA 2 Max battery; its store compatibility footnote omits DELTA 2 Max, so confirm that older-battery pairing before purchasing adapters.

See the DELTA 3 battery or Max Plus battery at EcoFlow. An extra battery increases stored energy; size running loads against the station's continuous inverter rating.

Solar inputs: check every limit and the cable

The standard, Plus, Max and Max Plus manuals specify these solar limits:

All four manuals require total panel open-circuit voltage (Voc) within 60V and total short-circuit current (Isc) within the stated limit. Max Plus's US manual does not clearly allocate that current between its ports; ask EcoFlow before specifying an array. A matching XT60i connection alone does not establish compatibility.

The Plus's separate paths look like this: each input accepts 11–60V, 15A and up to 500W, with 1,000W combined. Each panel arrangement needs its own suitability check and Solar to XT60i cable.

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DELTA 3 Plus: separate solar paths

Option	DC window	Current	Power ceiling	Required cable
01Panel arrangement A → input A+ This panel arrangement must fit this input's voltage, current and power limits. Sources: 1: Each DELTA 3 Plus solar input is rated 11–60V, 15A and 500W, with 1,000W combined., 2: The Plus manual specifies a Solar to XT60i charging cable, sold separately from the base station.	11–60V	15A	500W	Solar to XT60i
02Panel arrangement B → input B+ This separate input has its own allowance; unused capacity on the other input cannot raise its ceiling. Sources: 1: Each DELTA 3 Plus solar input is rated 11–60V, 15A and 500W, with 1,000W combined., 2: The Plus manual specifies a Solar to XT60i charging cable, sold separately from the base station.	11–60V	15A	500W	Solar to XT60i

Bars start at zero and share a scale within each column.