What Our Experts Think
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The EcoFlow DELTA Pro 3 Portable Power Station (EFDELTAPRO3-US) is a UL 9540 certified, next-generation powerhouse for whole-home backup and off-grid energy use.
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Offers exceptional 4kWh base capacity, expandable up to 48kWh with additional batteries.
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Provides 4kW continuous AC output (expandable to 12kW) for running heavy-duty appliances and entire home circuits.
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Built with LiFePO₄ battery technology for enhanced safety, long lifespan, and thermal stability.
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Features multi-source charging—AC, solar, EV, or generator—for maximum flexibility.
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Fully managed via the EcoFlow app, supporting smart energy scheduling and monitoring.
Q&A
Q: What makes the DELTA Pro 3 UL 9540 certified?
A: UL 9540 certification confirms compliance with stringent U.S. safety standards for residential and commercial energy storage systems.
Q: What is the storage and output capacity?
A: It has 4096Wh (4.096kWh) of base storage and 4kW output, expandable for larger power setups.
Q: Can it power an entire home?
A: Yes, when connected to the EcoFlow Smart Home Panel 2, it provides automatic home backup for critical circuits or full-home operation.
Q: How fast can it recharge?
A: With multi-charging support, it can reach 80% in about 50 minutes via high-speed AC or solar input.
Q: Is it suitable for outdoor and RV use?
A: Absolutely — its portable, rugged design makes it ideal for RV trips, outdoor work, and emergency preparedness.
Maintenance Tips
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Keep battery charged between 30–80% when stored long-term.
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Avoid extreme temperatures; store between 20°C–30°C (68°F–86°F).
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Clean ports and vents regularly with a soft, dry cloth.
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Update firmware periodically through the EcoFlow app.
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Operate on stable, ventilated surfaces to prevent overheating.
