EcoFlow DELTA 3 Ultra review
EcoFlow DELTA 3 Ultra Portable Power Station (3,072Wh)
By Tom Calder
Key specs
The maker's figures.
- Capacity
- 3,072 Wh
- AC output
- 3,600 W
- Surge
- 7,200 W
- Weight
- 72.1 lb
- Battery
- LiFePO4
- Cycles
- —
- Wall recharge
- 89 min to 80%
- Solar in
- 800 W
- AC volts
- 120V
- Expands
- To 11kWh
3,072Wh and 3,600W of 120V output, expandable to 11kWh with DELTA Pro 3 extra batteries, by EcoFlow's figures; heavy at 72.1 lb.
- Best for
- 3kWh of 120V backup on wheels
- Skip it if
- You need 240V
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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
- 3,600W (7,200W surge)
- Expands to 11kWh
Worth knowing
- 72.1 lb
- 120V only
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Who shouldn't buy this
Don't buy it if you need 240V: the DELTA Pro 3 on our home backup page has it.
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 A smaller, expandable start on 240V home backup