Entropy Survival
Entropy Survival
EcoFlow DELTA 3 Ultra delivers 3600W rated-output, with X-Boost™ 3.0 technology, it supports devices up to 4600W—effortlessly handling heavy-duty appliances[2]. The inverter samples AC voltage and current every 33μs with high precision with a DSP chip, ensuring a pure sine wave output with beyond grid-level stability—ideal for powering sensitive electronics reliably.
Go Hybrid—Extend Backup With a Smart Generator
Pair DELTA 3 Ultra with an EcoFlow Smart Generator[3] to achieve longer runtime—automatically switching between fuel and battery to keep you powered through multi-day outages or off-grid adventures.
Remote charging control for added peace of mind.
Rugged exterior and intelligent BMS for unmatched reliability
From battery chemistry to structural design, DELTA 3 Ultra is engineered for extreme durability, environmental resilience, and whisper-quiet performance.
![4 Ways to Charge Up — Ready in Just 1.48 Hrs<sup>[4]</sup>](https://us.ecoflow.com/cdn/shop/files/Wall_Charging_86c7fb45-f907-47b9-98a4-56609e336caf.jpg?v=1758801815)
"As a mom, nothing matters more than protecting my family. Entropy Survival’s emergency kits gave me peace of mind knowing we’re prepared for anything."
"I bought the pet emergency kit for my dog and was amazed at the quality! Everything is thoughtfully packed to keep pets safe and healthy during any disaster."
"The Safe Trail Kit is a must-have for hikers! Lightweight, affordable, and packed with high-quality essentials — it kept me safe and prepared deep into the backcountry."
"Entropy Survival has the best selection of quality survival gear I’ve found. Whether prepping for off-grid living or emergencies, their depth and reliability are second to none."
Yes, you can track your order via our interactive chat or via email. To see your order status, please provide your order details.
We currently only ship to confirmed addresses in the United States. We offer free shipping on all orders $99 or more.
If you purchased an item through our website and need to return it, you can request a refund within 30 days of the shipping date. To qualify for a full refund, the product must be returned in "new" condition – unused, unaltered, unworn, and containing all original components (e.g., all parts of The Safe House Kit).
