Device Overview
EcoFlow DELTA Pro Ultra X is a modular battery-plus-inverter backup system for North American homes. The standard official-store bundle pairs one inverter with two Smart Extra Batteries for 12.288 kWh of stated capacity and 12 kW of 120/240 V AC output.
Core Battery Fields
The official specification section lists 6144 Wh per battery, 12.288 kWh standard capacity, LFP battery chemistry, and expansion up to 61.440 kWh with one inverter or 184.32 kWh with three parallel inverters. EnergyMeterHub stores the standard two-battery bundle as the comparison scalar and explains the larger expansion range in the expandable-capacity field.
Backup And Installation Fit
DELTA Pro Ultra X can work as a standalone UPS with switching under 10 ms, or under 20 ms when paired with EcoFlow Smart Home Panel 3 or Smart Gateway. Panel and gateway workflows should be treated as professional installation projects, not a simple plug-in battery accessory.
Solar And Charging Context
EcoFlow lists total PV input up to 10 kW across two high-voltage PV ports. The page also notes that rooftop solar charging through Smart Home Panel 3 or Smart Gateway requires current transformers, so solar integration depends on the full system design.
Buying Notes
The EcoFlow US product page showed the 1 inverter + 2 batteries bundle at USD $7,899 during the 2026-06-19 review and described the product as a pre-order item. Regional delivery and installation availability can vary by ZIP code.
Limits To Keep In Mind
A separate usable-capacity value was not verified from EcoFlow's official page, so usableCapacityKwh is intentionally left unset. App and cloud services add monitoring, alerts, scheduling, and smart-panel control, while core backup output is hardware-based.