EcoFlow DELTA Pro review
EcoFlow DELTA Pro Portable Power Station (3,600Wh)
By Tom Calder
EcoFlow's original big station: 3,600 Wh and 3,600 W at 120V (7,200 W surge), growing to 10.8 kWh with two Smart Extra Batteries; EcoFlow's 25 kWh figure needs two units, four extra batteries and its Smart Generators. 240V takes two units and EcoFlow's Double Voltage Hub.
- Best for
- A proven 3.6 kWh unit that grows to 10.8 kWh
- Skip it if
- You need 240V from one box
as of Nov 14, 2026, 5:36 PM ET · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.We earn a commission if you buy through the retailer links on this page. It doesn't change our verdict. How we make money →
Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- 3,600 W, 7,200 W surge
- Expands to 10.8 kWh per unit
- 1,600 W solar input
Worth knowing
- About 99 lb
- 120V only from one unit
ⓘ As an Amazon Associate, PreparedStates earns from qualifying purchases. We may earn a commission when you buy through our links. When two products are close, commission can decide which one we pick. A clearly better product always wins. Amazon prices come from Amazon's own product data and can change at any time.
Who shouldn't buy this
Don't buy it if you need 240V from one box.
Key specs
| Capacity | 3,600 Wh |
| AC output | 3,600 W |
| Surge | 7,200 W |
| Weight | 99 lb |
| Battery | LFP |
| Cycles | — |
| Wall recharge | — |
| Solar in | — |
| AC volts | — |
| Expands | — |
This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the US price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
If this isn’t the one
Best for Big output with solar and generator inputs for a long outage
as of Nov 14, 2026, 5:36 PM ET · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Best for A US household that wants a plug-in battery that can also feed essential circuits through a transfer switch
as of Nov 14, 2026, 5:36 PM ET · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.Best for 3kWh of 120V backup on wheels