Description
Overview
DELTA Pro Ultra is EcoFlow’s modular home battery system: an inverter on top of one or more 6kWh batteries. One inverter delivers 7.2kW at 120V and 240V, and up to three inverters reach 21.6kW with the Smart Home Panel 2. Capacity scales from 6kWh to 90kWh.
This is the battery that sits under the inverter. Add more to stretch backup time, and keep the stack in a garage or utility closet. EcoFlow rates each battery at 3,500+ cycles before capacity drops to 80%, and it starts heating itself below 32°F so it keeps working in cold weather.
Who it’s for
- DELTA Pro Ultra owners who want longer backup.
- Homes planning whole-home backup in stages.
- Garages and utility rooms in cold climates.
Key benefits
- 6kWh per battery: stack to scale your system.
- Up to 90kWh: total system capacity.
- Long life: 3,500+ cycles to 80% capacity.
- Self-heating: starts below 32°F.
Specifications
| Capacity | 6kWh |
|---|---|
| Chemistry | LFP |
| Cycle life | 3,500+ cycles to 80% |
| Compatible with | EcoFlow DELTA Pro Ultra inverter |
| System capacity | 6kWh to 90kWh |
| Cold weather | Self-heats below 32°F |
| Weight | 111.8 lb (manufacturer figure) |
FAQ
Do I need the inverter too?
Yes. The battery stores energy; the DELTA Pro Ultra inverter turns it into household power.
Does it work in a cold garage?
Yes. It starts heating itself when the temperature drops below 32°F.
Warranty
Manufacturer’s warranty: 5 years. Source: EcoFlow warranty policy.
Defective on arrival or within 30 days? You can also return it to us under our Returns & Refunds Policy. See how warranty claims work.
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