DELTA Pro Ultra X (1 Inverter + 2 Batteries)
All-in-One System Portable
EcoFlow's flagship hybrid AIO base unit. 12 kW continuous AC output paired with 12 kWh of LFP storage in a single rolling enclosure, expandable up to ~62 kWh by chaining additional battery modules.
Normalized price
$667 per kWh
$7,999 at lowest of 2 merchants
Methodology: lowest in-stock merchant price · normalized to nameplate
Whole-home backup with peak loads up to 12 kW
The data
Specifications
Battery
| Capacity (nominal) | 12 kWh |
|---|---|
| Chemistry | LFP |
| Max expandable capacity | 62 kWh |
Output
| Continuous AC output | 12 kW |
|---|---|
| Surge output | 24 kW |
| UPS switchover | 20 ms |
Charging
| Solar input | 5600 W |
|---|
Smart features & certifications
| App / Wi-Fi | Yes |
|---|
Warranty
| Warranty | 5 years |
|---|
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Editorial
Best for, watch out for
Best for
- Whole-home backup with peak loads up to 12 kW
- Hardwired install paired with a Smart Home Panel or Smart Gateway
- Buyers who plan to grow capacity later via additional batteries
Watch out for
- Heavy. Casters help, but the enclosure is not light
- Maximum stack only with EcoFlow's matching battery SKU; mixed-vendor batteries are not supported
The market
Price history
Price history · last 16 days
Flat
Sold in 3 bundles
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What people ask about the DELTA Pro Ultra X (1 Inverter + 2 Batteries)
What's the difference between DELTA Pro Ultra X (1 Inverter + 2 Batteries) and a residential all-in-one inverter-battery?
EcoFlow DELTA Pro Ultra X (1 Inverter + 2 Batteries) is a solar generator (portable power station) — designed to be picked up and moved, with built-in outlets and a solar input port. It's distinct from a residential AIO like the EcoFlow PowerOcean or Sol-Ark 12K, which is a permanent-install hybrid inverter wired into a home's main panel. Solar generators excel at backup-of-last-resort, off-grid trips, and powering specific high-priority devices. Residential AIOs are what you'd choose to back up the whole home.
What can EcoFlow DELTA Pro Ultra X (1 Inverter + 2 Batteries) actually run, and for how long?
With 12000W continuous AC output, EcoFlow DELTA Pro Ultra X (1 Inverter + 2 Batteries) can run anything that draws under that wattage continuously: refrigerators (~150W), LED lights, laptops, modems, CPAP machines, even small space heaters at low setting. Surge to 24000W means it can handle motor-startup spikes from compressors and small pumps. At 12kWh capacity, runtime depends on draw: a 60W draw runs 170 hours, a 600W draw runs 17 hours. (The 0.85 factor is realistic round-trip efficiency.)
How do I expand capacity?
EcoFlow DELTA Pro Ultra X (1 Inverter + 2 Batteries) expands to 62kWh total via add-on battery packs from the same manufacturer. The expansion battery connects with a single high-current cable and the BMS treats the combined bank as one battery. Note that the inverter section's continuous AC output (12000W) doesn't increase with capacity — only runtime does.
Will this charge from the panels I already have?
EcoFlow DELTA Pro Ultra X (1 Inverter + 2 Batteries) accepts solar input via a built-in MPPT charger. The exact voltage range and max wattage on this unit aren't in our verified spec set — confirm before pairing with rooftop or portable panels, as solar generator MPPTs typically have tight voltage windows that not every panel string fits.
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