EcoFlow DELTA 3 Max Plus review

The EcoFlow DELTA 3 Max Plus is the pick for real home backup. EcoFlow lists 2,048Wh of LFP capacity, 3,000W of rated AC output with a 6,000W surge, and X-Boost for appliances up to 3,800W, which covers refrigerators, washers and circular saws. It charges from the wall at 1,800W (0 to 80% in 64 minutes), takes up to 1,000W of solar, and can grow from 2 to 10kWh with extra batteries. Smart Output Priority in the app lets you choose which circuits stay powered, and Storm Guard Mode starts charging when a severe weather alert comes in. At $1,149 on sale it costs about $0.56 per Wh, close to the 1kWh units. It is not light at 22.1 kg, and the full 5-year warranty requires registering in the EcoFlow app. We compared documented features and published prices only.

Who it is for

Home backup for fridges, sump pumps and power tools

Price

$1,149 on the EcoFlow US store (sale; regular $1,599).

DELTA 3 Max Plus Portable Power Station (2048Wh) USD $1,149.00 $1,599.00 -$450.00
Quoted from the vendor pricing page on November 12, 2026.

Key features

• 2,048Wh capacity, 3,000W AC output, 6,000W surge
• X-Boost supports devices up to 3,800W
• 1,800W input, 0 to 80% in 64 minutes from the wall
• 1,000W max solar input
• 2 to 10kWh expandable capacity and Smart Output Priority in the app

Strengths and weaknesses

• Strength: Highest output on this list: 3,000W rated, 6,000W surge
• Strength: Expands to 10kWh with extra batteries and pairs with EcoFlow Smart Generators
• Strength: Storm Guard Mode charges the unit ahead of severe weather alerts
• Weakness: 22.1 kg (about 49 lb) net weight
• Weakness: $1,149 is the highest price on this list
• Weakness: The 5-year warranty needs app registration; the standard term is 3 years

Key facts

• Price: $1,149 (regular $1,599)
• Capacity: 2,048Wh
• AC output: 3,000W (6,000W surge)
• AC recharge: 0 to 80% in 64 min
• Solar input: 1,000W max
• Weight: 22.1 kg
• Warranty: 3 years + 2 with app registration

Where it ranks

EcoFlow DELTA 3 Max Plus is No. 4 in our Best Portable Power Stations verdict.