Ready in Just 45 Mins
AC charges to 80% in just 45 minutes
Uninterrupted Power
<10ms switchover—fastest-in-class UPS
High Power Output
1800W rated output 3600W surge output
10 Years of Reliable Power[1]
EV-grade full-tab LFP batteries
Whisper-Quiet Operation
As low as 30dB under load—ideal for homes and sensitive environments
Smarter, Safer, 24/7 Protection with BMS
ARM Cortex chipset Cloud Intelligence Algorithm
Compact, Portable — Works Anywhere

A New Level of Fast

Ultra-versatile 4 charging options, 45-minute fast charge.

Remote AC charging for added peace of mind.

X-Stream: Ready in Just 45 Mins
DELTA 3 Classic charges from 0–80% in just 45 minutes with AC charging. It keeps you powered faster, smarter, and with greater peace of mind—whether indoors, outdoors, or on the move. X-Stream enables ultra-fast charging without compromising battery life. It intelligently adjusts voltage and power to ensure safe, high-speed recharging. With X-Stream, you’re ready in just 45 minutes. [2]
4 Ways to Charge—Anytime, Anywhere
AC Charging
Generator Charging
Solar Charging
Car Charging
Activate EcoFlow's exclusive Storm Guard Mode [3] to auto-start charging when extreme weather alerts hit—so you're always prepared, even when away.

A New Era of Power Performance

1800W Output, 3600W Surge, 1kWh Capactiy

Next-level energy for next-level peace of mind.

1800W Output, 3600W Surge — Power Essentials Without Compromise
EcoFlow DELTA 3 Classic delivers a steady 1800W pure sine wave output with grid-level stability—enough to handle high-demand appliances like microwaves and power tools.[6] With X-Boost™ mode, it supports devices up to 2600W without tripping or slowing down—giving you seamless power for the moments that matter.
Microwave (1300W)
Refrigerator (120W)
Blender (500W)
Coffee maker (1000W)
50" TV (110W)
PS5 (200W)
Speaker (400W)
Projector (65W)
Heated blanket (120W)
Electric kettle (1500W）
Mini/Car fridge (60W)
Camping light (10W)
Laptop (60W)
Wi-Fi router (50W)
NAS (50W)
PC (500W)
Kitchen
Living Room
Outdoors
Office

10ms Auto-Switch. Zero Interruptions.

When the power drops, DELTA 3 Classic responds in just 10 milliseconds—fast enough to keep critical devices like NAS systems and servers running smoothly. No data loss. No downtime. Just uninterrupted peace of mind.

Long-Lasting, Durable, Always Ready for Emergencies

Automotive-grade full-tab LFP cells

Rugged exterior and intelligent BMS for unmatched reliability

Automotive-grade Full-Tab LFP Cells: Next-Level Battery Reliability
DELTA 3 Classic is equipped with automotive-grade full-tab LFP cells. The full-tab design reduces resistance, enhances efficiency and safety, and provides higher capacity with less heat, resulting in a long battery lifespan.
25% more
efficient power flow (thanks to lower resistance: 1.5 mΩ vs. 2 mΩ) [7]
25% less
self-heating [8]
Unrivaled Balance for Unmatched Battery Longevity
With 27% fewer cells per kWh, [9] our 16-cell design runs cooler, lasts longer, and delivers greater stability. Each cell is rigorously tested for capacity, voltage, and internal resistance—resulting in a highly uniform pack that protects against overcharging, imbalance, and premature wear.
16-cell uniform set per 1 kWh
Rigorously tested for capacity
voltage, and internal resistance

Built to Last

From battery chemistry to structural design, DELTA 3 Classic is engineered for extreme durability, environmental resilience, and whisper-quiet performance—delivering power you can count on for over 10 years.
Smart, 24/7 Battery Protection
EcoFlow’s advanced BMS uses a high-performance ARM Cortex chipset and intelligent algorithms to monitor your battery in real time. By tracking SOC, SOH, temperature, and more, it ensures peak performance, extended battery life, and worry-free operation.
EV-Grade CTC Structure
Built with a cell-to-chassis (CTC) structure, DELTA 3 Classic is drop-resistant — protecting against overnight condensation and off-road bumps during transport. You get stable power even in the most demanding conditions.
Extreme Environment Resistance
DELTA 3 Classic keeps your power flowing through freezing cold, scorching heat, humid environments (95% humidity tolerance), or coastal air (5% salt spray resistance)—for reliable energy anytime, anywhere. [10]
30dB Whisper-Quiet Operation Under Loads [11]
Powered by X-Quiet™ 3.0, EcoFlow’s stepless fan control adjusts airflow smoothly to maintain precise thermal regulation—keeping your home or workspace peacefully quiet, even under heavy loads.

Compact, Portable — Works Anywhere

Lightweight and easy to carry, DELTA 3 Classic fits seamlessly into any setting, from your home to the great outdoors.

Deeper Insights, Easier Control
Monitor your energy usage and solar generation—all with one intuitive dashboard. Set timed charging/discharging missions so that you can charge during off-peak hours and discharge during peak rate periods to save costs.
Output
Solar Generation
Scheduled Tasks

Comparison

Explore The NEW EcoFlow DELTA Series

EcoFlow DELTA 3 Max Plus
2kWh Portable Power Station with 3000W Max Output
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EcoFlow DELTA 3 Ultra Plus
3kWh Ultra Long-lasting Portable Power Station
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1. Based on proper product usage, DELTA 3 Classic is estimated to have a lifespan of approximately 10 years, according to internal simulation test data. This information is for reference only; actual user experience may vary.
2. All Charging speed data comes from EcoFlow labs and is for reference only. The actual data may vary slightly depending on the usage environment, device condition, software version, and other factors.
3. Feature requires preset activation via the EcoFlow App.
4. EcoFlow Smart Generators are sold separately.
5. EcoFlow 500W Alternator Charger is sold separately.
6. Single-appliance runtime based on ideal conditions; actual results may vary.
7. Refers to the internal resistance of EF Full-Tab LFP Cells being 1.5mΩ, which is 25% lower than the 2mΩ internal resistance of the previous EF #C33 Battery Cell.
8. A 25% reduction in single-cell internal resistance. According to the heat generation formula Q = I²Rt, under the same current, a 25% reduction in resistance leads to a proportional 25% decrease in heat generation.
9. Compared with the previous usage of EF #C33 Battery Cell.
10. Unless otherwise noted, all above data comes from EcoFlow labs and is for reference only. The actual data may vary slightly depending on the usage environment, device condition, software version, and other factors.
11. Noise levels measured at 0.5m under 25°C ambient: <30dB (600W) for charging/discharging.
12. Unless otherwise noted, all images, videos, and screen display contents about the product itself on this page are for reference only. Actual product effects (including but not limited to appearance, color, and size) and screen display contents (including but not limited to backgrounds, UI, and illustrations) may vary.
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