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Strong Output
1800W rated output 3600W surge output
45 Mins Fast Charge
AC charges to 80% in just 45 minutes
Works Anywhere You Go
Fast Emergency Power Switching
<10ms UPS
Ultra-Quiet Performance
As low as 30dB under light load — ideal for outdoor, camping, and night-time use
10-Year Lifespan [1]
EV-grade full-tab LFP batteries
Smarter & Safer Power Management with BMS
ARM Cortex chipset Cloud Intelligence Algorithm
EcoFlow’s Best-Value 1 kWh Portable Power Station
Smart choice for your outdoor adventures and work
1800W Output, 3600W Surge — Power Essentials Without Compromise
EcoFlow DELTA 3 Classic delivers a steady 1800W pure sine wave output with grid-level stability—built to handle demanding outdoor and professional equipment with confidence. [2] With X-Boost™ mode, it supports devices up to 2400W without tripping or slowing down—giving you seamless power for the moments that matter.
Camping light (10 W)
58 hrs
Electri Grill (1150 W)
0.7 hrs
Electric kettle (1500 W)
0.5 hrs
Camera (16W)
60 times
Drone (40 Wh)
25 times
Laptop (60W)
16 times
Electric Drill (1080 W)
0.7 hrs
Circular Saw (1400 W)
0.6 hrs
Cutting Machine (1100 W)
0.7 hrs
Camping
Outdoor Filming
Outdoor Work
A New Level of Fast
Ultra-versatile 3 charging options, 45-minute fast charge.
Remote AC charging, keeping your portable power ready whenever and wherever you need it.
X-Stream: Ready in Just 45 Mins
DELTA 3 Classic (1024Wh) charges from 0–80% in just 45 minutes with AC charging. It keeps you powered faster, smarter, and with greater peace of mind—whether 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. [3]
3 Ways to Charge—Anytime, Anywhere
AC Charging
Solar Charging
Car Charging
Charges from 0–80% in just 45 minutes with AC charging

Compact, Portable — Works Anywhere You Go

Lightweight and easy to carry, DELTA 3 Classic fits seamlessly into outdoor, mobile, and professional setups. Take it with you for camping, field work, filming, or any situation where reliable portable power is essential.

Fast Emergency Power Switching. No Interruptions.
When the power source changes, DELTA 3 Classic responds in as fast as 10 milliseconds—helping maintain continuous operation for critical outdoor and professional equipment. Designed to reduce interruptions during power transitions, it supports stable performance for sensitive devices in mobile and field environments.
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) [6]
25% less
self-heating [7]
Unrivaled Balance for Unmatched Battery Longevity
With 27% fewer cells per kWh, [8] 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

10-Year Lifespan, 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. [9]
30dB Whisper-Quiet Operation Under Loads [10]
Powered by X-Quiet™ 3.0, EcoFlow’s stepless fan control adjusts airflow smoothly to maintain precise thermal regulation—keeping your outdoor setup or workspace peacefully quiet, even under heavy loads.
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

Explore EcoFlow 1kWh Power Stations

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. Single-appliance runtime based on ideal conditions; actual results may vary.
3. 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.
4. Feature requires preset activation via the EcoFlow App.
5. EcoFlow 500W Alternator Charger is sold separately.
6. 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.
7. 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.
8. Compared with the previous usage of EF #C33 Battery Cell.
9. 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.
10. Noise levels measured at 0.5m under 25°C ambient: <30dB (600W) for charging/discharging.
11. 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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