EcoFlow DELTA Pro Ultra 7.2kW 6.144KWh | Right Click Technologies Ltd

Description

Overview

The EcoFlow DELTA Pro Ultra is a powerful, modular whole-home backup system designed for uninterrupted power during long outages and daily heavy loads. Each DELTA Pro Ultra inverter (EFYJ751-PCS-UK) delivers up to 7.2 kW of continuous AC power while each dedicated battery module (EFYJ751-BP) stores 6,144 Wh (6.144 kWh) of LFP energy. The system is stackable and expandable — combine multiple inverters and batteries to achieve up to 21.6 kW AC output and 90 kWh of capacity for larger homes and small businesses.

Why choose EcoFlow DELTA Pro Ultra?

Whole-home power: Run high-draw appliances, including central air conditioners, EV chargers, and kitchen appliances with 7,200 W per inverter.
Stackable & scalable: Add batteries and up to three inverters to reach a maximum output of 90 kWh and 21.6 kW — ideal for larger homes and extended off-grid use.
Fast solar input: Designed for high PV input (per inverter ~5.6 kW PV; with multi-inverter setups up to ~16.8 kW solar input).
Reliable UPS behaviour: Online UPS with near-instant transfer and configurable backup modes for uninterrupted devices.
Safety & certifications: UL-certified for residential backup usage (UL 1973 / UL 9540 noted for this series).

Included (single inverter kit)

DELTA Pro Ultra inverter (1 ×) — 7.2 kW output
DELTA Pro Ultra battery module (1 ×) — 6,144 Wh (depends on SKU/bundle)
EcoFlow Portable Stand (×1)
EcoFlow Supporting Leg (×4)
M6*20 (×4)
EcoFlow Side Mount Caster (×4)
EcoFlow Disassembly and Assembly Tool (×1)
EcoFlow Solar to Low-PV Port Charging Cable (×1)
EcoFlow AC Charging Cable (×1)
User Manual & Warranty Card

Applications of the EcoFlow DELTA Pro Ultra

Whole-home backup, emergency power, off-grid cabins, EV charging via dedicated EV charger, and hybrid solar + battery installations.

Inverter Specifications

Category	Specification
Model	EFYJ751-PCS-US / EFYJ751-PCS-EU / EFYJ751-PCS-UK / EFYJ751-PCS-AU
Net Weight	Approx. 32.1 kg (70.8 lb)
Dimensions	690 × 481 × 214 mm (27.2 × 18.9 × 8.4 in.)
Wi-Fi	Supported
Bluetooth	Supported
AC Output (Discharge Only) – US	120/240V ~ 60Hz, 7200W total; 120V ~ 20A (×4), 120V ~ 30A (×1), 240V ~ 30A (×1)
AC Output (Discharge Only) – EU	230V ~ 50Hz, 6900W total; 16A (×4), 30A (×1)
AC Output (Discharge Only) – UK	230V ~ 50Hz, 6900W total; 13A (×4), 30A (×1)
AC Output (Discharge Only) – AU	230V ~ 50Hz, 6900W total; 15A (×5)
AC Output (Bypass Mode) – US	100–120V ~ 50/60Hz, 30A total
AC Output (Bypass Mode) – UK/EU	220–240V ~ 50/60Hz, 12.5A (×5) total
AC Output (Bypass Mode) – AU	220–240V ~ 50/60Hz, 10A (×5) total
USB-C Output	USB-C (×2): 5/9/12/15V ⎓ 3A, 20V ⎓ 5A, 100W per port, 200W total
USB-A Output	USB-A (×2): 5V ⎓ 2.4A, 12W per port, 24W total
12V DC Output	12.6V ⎓ 30A, 378W max
AC Input (Charge Only) – US	100–120V ~ 15A; 200–240V ~ 12.5A, 50/60Hz
AC Input (Charge Only) – UK/EU	220–240V ~ 12.5A max, 50/60Hz
AC Input (Charge Only) – AU	220–240V ~ 10A max, 50/60Hz
AC Input (Bypass Mode) – US	100–120V ~ 15A, 50/60Hz (<3 hrs if >12A)
AC Input (Bypass Mode) – UK/EU	220–240V ~ 12.5A max, 50/60Hz
AC Input (Bypass Mode) – AU	220–240V ~ 10A max, 50/60Hz
Power Input/Output (US)	100–120V ~ 30A; 200–240V ~ 30A, 50/60Hz
Power Input (EU/UK/AU)	200–240V ~ 30A, 50/60Hz, 6900W max
High-PV Input	80–450V ⎓ 15A max, 4000W max
Low-PV Input	30–150V ⎓ 15A max, 1600W max
PV Input Short-Circuit Current	23A
Discharge Temperature	−20°C to 45°C (−4°F to 113°F)
Charge Temperature	−20°C to 45°C (−4°F to 113°F)
Storage Temperature	−20°C to 45°C (−4°F to 113°F), optimum 20–30°C (68–86°F)
Altitude	≤ 3000 m (9842 ft)
Overvoltage Category	PV (II), AC (III)
Pollution Degree	2
IP Rating	IP54
Noise Level	<30 dB
UPS Transfer Time	EU/UK/AU: <20 ms; US: Backup UPS <20 ms, Online UPS 0 ms
Communication Method	Bluetooth & Wi-Fi

Additional information

Weight	82.4 kg
Dimensions	66 × 45.5 × 20.4 cm

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