EcoFlow DELTA Pro Ultra Add-On Battery 6144 Wh Battery to work with the DELTA PRO Ultra inverter. From 1–5 batteries can be connected to one inverter, and up to 15 batteries with up to 3 inverters operating in parallel. Built for Safety and Reliability Top-spec LFP battery handles extreme conditions, from freezing mornings to long days of heavy use Built-in self-heating and advanced cooling for reliable performance in any environment Smart charge balancing helps maintain system health and extend runtime Backed by a 5-year warranty for dependable, long-term use in mobile and off-grid settings Turn Sunlight and Off-Peak Power into Savings Whether you're at home or running a business, DELTA Pro Ultra helps cut your energy costs. It takes power from your rooftop solar and cheaper night-time electricity, handling up to 16.8kW of input. Built-in smart timers automatically switch between power sources to make the most of off-peak rates and solar generation. Stackable Design for Every Business or Home Begin with a 6kWh battery and scale to 90kWh. Each inverter delivers 7.2kW, and up to 3 can be connected for 21.6kW output using Smart Home Panel 2 (when available). In the Box Full Technical Specifications Module Functions Specs General Net weight Battery: 52.7 kg (116.4 lbs) Dimensions Battery: 660 × 455 × 204 mm Rated capacity 6144Wh × 1 - 5 batteries Wi-Fi Supported Bluetooth Supported Screen display Supported Grid connection Not supported Standby power consumption <12W Operating altitude ≤3000 m (performance derated above 2000 m) Warranty 5 Years Temperature range Discharging: −20°C to 45°C, Charging: −20°C to 45°C, Storage: −20°C to 45°C Protection rating IP54 Noise level <=30 dB (under 25°C discharge conditions) Battery Battery pack 6144Wh, 102.4V, 32S3P Battery chemistry LFP Cell specification 20Ah, 3.2V Cell efficiency ≥95% under full AC load Temperature range Charging: −20°C to 45°C (self-heating below 0°C), Discharging: −20°C to 45°C Battery heating Supported, operable at −20°C Battery balancing Control via app per battery pack Certification CE, UKCA, RCM Protection types Over-temp, low-temp, over-discharge, overcharge, overload, short-circuit, over-current
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