EcoFlow DELTA Pro Ultra UK: Output, Solar Inputs, and Expansion
Read the UK DELTA Pro Ultra specifications by discharge, bypass, high-PV, low-PV, and battery configuration without treating them as interchangeable limits.
This profile follows EcoFlow’s UK DELTA Pro Ultra product page, which describes a 230 V, 50 Hz system. Use it for that regional product presentation only. It does not establish an electrical profile for a North American DELTA Pro Ultra or prove that a differently named DELTA Pro model uses the same inverter, ports, or limits. Check the label and the current manual supplied for the exact unit.
Discharge, bypass, and input limits
| Function on the UK product page | Published limit | How to read it |
|---|---|---|
| AC discharge | 230 V / 50 Hz; 6,900 W total | Battery-powered output rating; the page also lists per-port limits |
| AC bypass output | 220–240 V; 2,900 W total | Separate pass-through ceiling; it is not the 6,900 W discharge rating |
| AC input | 200–240 V; 12.5 A; 50/60 Hz | Charging/input specification, not a household-output rating |
| High-PV input | 80–450 V DC; 15 A; up to 4,000 W | Separate high-voltage solar input |
| Low-PV input | 30–150 V DC; 15 A; up to 1,600 W | A different input window from the high-PV connection |
| Station DC output | 12.6 V; 30 A; up to 378 W | DC output limit, separate from AC capacity |
The product page lists four AC outlets rated up to 13 A each and one 30 A outlet for discharge. Those per-port values do not replace the total 6,900 W system ceiling. Bypass mode has its own output row and lower total. When comparing a load with the station, check the operating mode, voltage, outlet, per-port limit, and total output together.
The high- and low-PV inputs are not two interchangeable ways to reach a single advertised solar-wattage number. Each has its own voltage window, current limit, and wattage ceiling. This profile does not design a panel string or establish a safe array for a location: panel open-circuit voltage changes with temperature, and the page alone does not settle every connector, protection, or installation detail. Use the exact manual and qualified solar expertise for system design.
Battery capacity and system scale
EcoFlow lists 6,144 Wh per battery and up to five batteries, with a product-page maximum of 30,720 Wh. These are nominal product values, not a measurement of usable energy at an appliance. Runtime still depends on inverter losses, the load’s cycling and startup, temperature, selected mode, and station consumption. A large capacity figure cannot predict how long a specific home circuit or device will run without those inputs.
The UK page describes the multi-battery arrangement as stationary-oriented. It also says a battery pack must be charged through the inverter rather than as an independent charger. For a multi-pack setup, verify the exact compatible battery, cable, inverter, and current instructions. Do not infer support for mixed DELTA Pro, DELTA Pro 3, and DELTA Pro Ultra units from the shared product-family name; EcoFlow’s compatibility notes distinguish them.
Backup and transfer claims
EcoFlow advertises UPS switching below 20 ms for this product presentation. That is a manufacturer claim, not proof that a computer, pump, refrigerator, or medical device will ride through a transfer. Confirm the equipment maker’s requirements and test the intended load under the configuration you plan to use. The page does not establish a device-specific no-break result or a guaranteed runtime.
The product page discusses use with a compatible manual transfer switch and says installation should be completed by a qualified professional. This article does not provide household wiring or transfer-switch steps. Check local requirements and use a qualified electrician for any fixed connection. A station’s voltage, output rating, or transfer-switch compatibility statement does not establish code compliance or suitability for every home circuit.
Before comparing this model with another station, identify its market, separate discharge from bypass, and keep the two solar-input windows distinct. The specification decoder explains these rating types; the solar and expansion guide covers the checks that must match a particular input and accessory.