EcoFlow DELTA 3 Max Plus Smart Extra Battery

Only the EcoFlow DELTA 3 Max Plus. It's a matched 2,048 Wh pack built to connect through the Max Plus's extra-battery port, not the smaller DELTA 3 Series stations or DELTA Pro 3, which each use their own separate battery accessories.

It doubles the Max Plus's own 2,048 Wh to 4,096 Wh total. In practice that roughly doubles how long the station covers the same load — a fridge that ran for a day and a half on the station alone runs for closer to three days with this battery attached.

No. At 2,048 Wh it's more than twenty times the 100 Wh limit airlines allow in carry-on or checked baggage. It has to travel by ground or freight, not in your luggage, so plan shipping ahead if you're flying to where you'll use it.

Paired with the Max Plus, yes, for an extended stretch. A full-size fridge uses roughly 1–2 kWh a day; at 4,096 Wh combined, that's somewhere between two and four days depending on the fridge's efficiency and how often the door opens.

Yes. Combined with the Max Plus's own 2,048 Wh, the 4,096 Wh total runs a Starlink Standard kit (75–100 W) for close to two days continuously, or a Starlink Mini (25–40 W) for the better part of a week on one charge.

No. It connects to the Max Plus through its own dedicated extra-battery port, not your home's wiring. Setup happens entirely on the station itself, not an electrician's job, and there's no home-panel work involved at any point in the process.