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 |