The Delta 3 Plus sits in EcoFlow's mid-range lineup — priced well under their largest home-backup-class units, but built on the same fast-charging, expandable-battery philosophy that's become the brand's signature.
Specs at a glance
| Spec | Value |
|---|---|
| Price | $669 |
| Capacity | 1,024Wh |
| Continuous output | 1,800W |
| Peak/surge output | 3,600W |
What it does well
1,800W of continuous output is genuinely strong for a sub-1,100Wh unit — enough to run a microwave, a space heater or a hair dryer, appliances that trip a lot of similarly-sized competitors. It's also compact enough to move around a house or apartment without much effort, and EcoFlow's app gives clear, real-time monitoring of charge level and output.
Where it falls short
At 1,024Wh, this isn't a multi-day home-backup solution on its own — it's better suited to shorter outages, apartment living, or as a secondary unit. Buyers wanting to run a fridge for a full day or more should look at higher-capacity options like the 3,000Wh-class units in our home backup picks instead.
The verdict
A strong choice for apartment dwellers, backup-light households, or as a second unit alongside a larger one — the output-to-capacity ratio is genuinely competitive at this price point, but don't expect it to single-handedly cover a full household through a multi-day outage.