Two big home-backup stations. They overlap in mission but separate on scale.

The EcoFlow goes bigger. 4,096Wh versus the Anker's 3,072Wh, 4,000W of 120/240V output for hard-wired 240V appliances, and expandability to 48kWh (double the F3000's 24kWh). If your goal is to back up an entire home or build a large off-grid bank, the Delta Pro 3 has more ceiling — and a bigger 2,600W solar input to match.

The Anker is the lighter, leaner option. At 79.6 lbs it undercuts the Delta Pro 3's 113.5 lbs by over 30 pounds, and its 6,000W surge still starts well pumps, AC units, and tools without drama (see Surge Watts vs Running Watts). For a fridge-plus-essentials backup that you might occasionally move, 3kWh is plenty and the F3000 typically costs less.

Full reviews: Anker SOLIX F3000 (currently $1298.99) · EcoFlow Delta Pro 3 (currently $2599.00).