We may earn a commission when you buy through links on this page, at no extra cost to you. Rankings are computed from specs and prices, never from commissions. How we make money
Accessories › EcoFlow DELTA 2 Max
EcoFlow DELTA 2 Max accessories
The solar panels and add-on batteries that EcoFlow itself sells for the DELTA 2 Max. We list an accessory only where the maker states the pairing, and show that statement, its source and the date we last confirmed it.
Solar panels
| Panel | Price | One panel refills it in (est.) | Why it's listed | |
|---|---|---|---|---|
| EcoFlow NextGen 220W Bifacial Portable Solar Panel 220W | $399 2026-10-11 | 12 sun-hours | EcoFlow sells the DELTA 2 Max with it as a kit: “DELTA 2 Max + NextGen 220W Bifacial Portable Solar Panel” (source, confirmed 2026-10-11) | |
| EcoFlow 400W Portable Solar Panel 400W | $599 2026-10-11 | 6.8 sun-hours | EcoFlow sells the DELTA 2 Max with it as a kit: “DELTA 2 Max + 400W Portable Solar Panel” (source, confirmed 2026-10-11) |
Refill time is our estimate, not a test: 2,048Wh ÷ (panel watts × 75% real-world output). A "sun-hour" is an hour of strong, direct sun; most of the US gets 3–5 a day, fewer in winter. The DELTA 2 Max accepts up to 1,000W of solar in total (EcoFlow's figure), so more panels charge it faster up to that limit; check the manual for how to connect more than one. Prices are EcoFlow's store prices on the date shown.
Add-on batteries
| Battery | Price | Capacity with one added | Fridge runtime with it (est.) | Why it's listed | |
|---|---|---|---|---|---|
| EcoFlow DELTA 2 Max Smart Extra Battery 2,048Wh Out of stock at EcoFlow | $899 2026-10-11 | 4,096 Wh from 2,048 | 2.8 days from 33.2 hrs | EcoFlow sells the DELTA 2 Max with it as a kit: “DELTA 2 Max + DELTA 2 Max Smart Extra Battery” (source, confirmed 2026-10-11) |
Capacities are EcoFlow's published figures. Fridge runtime is our estimate (full-size fridge, 85% inverter efficiency), not a test. EcoFlow says the DELTA 2 Max can be expanded to 6,144Wh in total.
Back to the EcoFlow DELTA 2 Max, or size a whole setup with solar and add-on batteries in the home backup planner.