EcoFlow Unveils DELTA Gen4 and RIVER Gen4 Series, Delivering Longer-Lasting Power in Smaller, Lighter Designs

Next-generation portable power stations combine intelligent energy management, extended backup power, and compact designs to keep households powered at home and on the go

SEATTLE, Nov. 4, 2026 /PRNewswire/ -- EcoFlow, a leading provider of eco-friendly power solutions, announced its new DELTA Gen4 and RIVER Gen4 Series, a new generation of portable power stations designed to deliver longer-lasting power in smaller, lighter designs for home backup, outdoor adventures and everyday use.

The announcement comes ahead of a special event in Miami later today, where EcoFlow will showcase its latest products for the U.S. market—TITAN, DELTA Gen4 and RIVER Gen4.

As extreme weather and prolonged power outages increase demand for flexible backup solutions, households are prioritizing energy resilience and reliability. The new lineup combines intelligent energy management, ultra-low power consumption and compact designs to help consumers get more out of every charge, keeping essential devices powered longer without unnecessary bulk.

DELTA Gen4 Series: Extending Backup Power When It's Needed Most

Longer-Lasting Power with Best in Class^[1] Fridge Runtime and Low Power Consumption

Designed to maximize available energy, both models reduce their own power consumption by up to 70%, drawing just 14W with AC on (no load) and 3W in standby, compared with industry averages^[1] of over 20W and 10W, respectively, for up to 3x longer standby time. Best in class Fridge Runtime Boost™ reduces unnecessary energy use between refrigerator cooling cycles, helping keep food cold for 2–3 days during an outage. With Fridge Runtime Boost enabled, DELTA 3800 Gen4 can keep a refrigerator running for up to 70 hours, while DELTA 3000 Gen4 provides up to 58 hours — 17 hours longer than comparable competing products in the industry^[1].

The series also introduces industry-first^[1] Emergency Power Mode™ in portable power stations, which maintains a small reserve of emergency DC power for critical devices, such as phones and lights, even when the displayed battery level reaches 0%.

For added peace of mind, DELTA Gen4 retains 99% of its battery charge after one year of storage, thanks to automotive-grade LFP cells and a design that minimizes self-discharge, ensuring backup power is ready even after extended storage.

High-Output Power Without the Bulk

DELTA 3800 Gen4 offers 3763Wh of capacity and is expandable up to 12kWh, while DELTA 3000 Gen4 provides 3072Wh in a more compact design. Both models deliver 3600W rated output and 7200W surge power for brief startup demands, enough to power up to 99% of household appliances, including refrigerators, microwaves, induction cooktops and electric heaters. X-Boost technology supports appliances requiring up to 4600W, providing additional power for high-demand essentials.

Both models are the smallest and lightest^[1] portable power stations in their respective classes, offering more capacity per pound than similarly sized competing models. DELTA 3800 Gen4 weighs just 67.5 lbs., while DELTA 3000 Gen4 weighs just 57.3 lbs. Both feature dual side handles for easier movement around the home or outdoors.

Fast, Flexible Charging and Smarter Storm Preparedness

DELTA Gen4 offers multiple ways to recharge at home, on the road or off-grid. DELTA 3000 Gen4 supports four charging methods (AC, generator, solar and alternator charging car) and reaches a full charge via AC in under two hours, while DELTA 3800 Gen4 supports six charging methods (AC, generator, solar, alternator charging, solar + alternator charging and solar + generator) and reaches a full charge via AC in under 2.5 hours.

For added outage preparedness, Storm Guard Mode 2.0 integrates professional weather data from the National Weather Service in the U.S. to help users prepare their power stations ahead of severe weather and potential outages. A 10ms UPS switchover helps keep connected electronics running when grid power is interrupted, providing an additional layer of protection during unexpected outages.

RIVER Gen4 Series: Compact, Versatile Power for Home and On the Go

Ultra-Compact Power

The new RIVER Gen4 Series features the RIVER 260 Gen4 and RIVER 520 Gen4. It's built with EcoFlow's proprietary stacking technology. The series delivers reliable power in ultra-compact designs for camping, outdoor adventures, everyday use and essential home backup. Weighing just over 6 lbs., RIVER 260 Gen4 delivers 256Wh of capacity and 300W output in a design that is 32% smaller than the industry average, while RIVER 520 Gen4 packs 512Wh of capacity and 500W output into a 10-lb. design that is 54% smaller than the industry average^[1]. Both feature removable carrying straps for easy portability.

Smarter, Longer-Lasting Power

Designed to make stored power last longer, RIVER Gen4 uses intelligent power management to minimize unnecessary battery drain, drawing just 6.6W with AC on and 1W in standby. Both models support four charging methods (AC, USB-C, solar and alternator), recharging from 0–80% in as little as 42 minutes for RIVER 260 Gen4 and 50 minutes for RIVER 520 Gen4. Multiple AC and USB ports, including 140W bidirectional USB-C, allow users to power several devices at once, from laptops to photography equipment. For added peace of mind, Emergency Power Mode reserves energy for essential phone charging even when the displayed battery level reaches 0%, while UPS functionality with a switchover time of fewer than 10ms helps keep connected electronics running during unexpected outages.

Availability, Pricing and Black Friday Offers

The DELTA Gen4 Series is now available on the EcoFlow website with early-bird pricing at $1,299 for DELTA 3000 Gen4 and $1,699 for DELTA 3800 Gen4. The RIVER Gen4 Series will be available for pre-sale beginning November 24.

EcoFlow is kicking off its Black Friday sale from November 2 through December 7, offering trusted backup when it matters most with up to 58% off select home backup and portable power solutions. From compact power stations to high-capacity home backup systems, customers have multiple options to prepare for winter storms and unexpected outages.

About EcoFlow

Founded in 2017, EcoFlow is a global provider of smart home energy storage solutions, empowering users to take control of their energy at home and beyond. With operational headquarters in Seattle, Düsseldorf, Irvine, Tokyo and Birmingham, and a business and data center in Germany, EcoFlow operates as a global network spanning research, operations, and manufacturing. According to EcoFlow internal data (as of October 2026), EcoFlow's technologies serve over 9.5 million users across 140 markets.

SOURCE EcoFlow Technology Inc.