Perfect for indoors, outdoors, or on the go
The EcoFlow DELTA 3 (EFDELTA3-UK) is a compact, high-performance portable power station featuring a 1024Wh LiFePO₄ battery that delivers 1800W continuous AC output (3600W surge) and up to 2400W via X-Boost technology, easily powering 99% of household appliances like fridges, microwaves, tools, TVs, or multiple devices simultaneously for home backup, camping, RV use, or emergencies. It stands out with industry-leading ultra-fast charging—reaching 0-100% in as little as 56 minutes via 1500W X-Stream AC input—or combining with up to 500W solar (or multi-charging options including alternator and generator) for quick replenishment in various scenarios. Expandable up to 5kWh with compatible extra batteries, it includes 11-13 versatile ports (4 AC, dual 100W USB-C, USB-A, car outlet, DC5521), whisper-quiet operation under 30 dB (even at 600W load), <10ms UPS switchover for seamless power during outages (ideal for NAS or sensitive electronics), app control via Wi-Fi/Bluetooth for real-time monitoring and customization, and durable LFP chemistry rated for 4000+ cycles to 80%+ capacity—offering reliable, long-lasting power in a portable 12.5 kg design with handles, making it an excellent mid-range choice for UK users seeking speed, silence, safety, and versatility in everyday or off-grid situations.
Key Features
Ultra-Fast Charging Speed
With X-Stream technology supporting up to 1500W AC input, the DELTA 3 achieves a full 0-100% charge in as little as 56 minutes, or reaches significant capacity in just 30 minutes for quick emergency recovery, while also offering flexible multi-charging options including up to 500W solar input, alternator, generator, or combinations for versatile replenishment in home, camping, or off-grid scenarios.
High-Power Output with X-Boost
It provides 1800W continuous AC output (3600W surge) across multiple outlets, enhanced by X-Boost to safely handle devices up to 2200-2400W, powering 99% of household appliances like refrigerators, microwaves, tools, or electronics simultaneously without overload concerns, making it reliable for demanding loads during blackouts or outdoor activities.
Expandable Battery Capacity
Starting with a 1024Wh LiFePO₄ battery, the unit expands up to 5kWh by connecting compatible EcoFlow extra batteries (such as DELTA 3, DELTA 2 Max, or DELTA Pro 3 extras), delivering extended runtime for prolonged use in home backup, RV trips, or remote setups while maintaining portability and seamless integration.
Whisper-Quiet and Safe Operation
Operating at under 30 dB (imperceptible under 600W loads), it ensures quiet performance that won’t disturb sleep, work, or natural environments, paired with durable LFP chemistry rated for 4000+ cycles to 80%+ capacity for 10+ years of reliable service, advanced BMS protection, and IP65-rated battery safety for confident daily or emergency use.
Fast UPS Switchover and Smart Features
Featuring a built-in UPS with under 10ms switchover time (ideal for sensitive devices like NAS systems or computers), it provides seamless power continuity during outages, while Wi-Fi and Bluetooth app connectivity via the EcoFlow app allows real-time monitoring of battery status, power usage, remote control of settings, and smart energy management for optimized backup or bill savings.
What’s in the Box
- Ecoflow Delta 3
- AC Charging cable
- User Manual
FAQs
How fast does the DELTA 3 actually charge, and what are the best ways to recharge it?
The DELTA 3 excels at ultra-fast charging with X-Stream technology, reaching 0-100% in as little as 56 minutes via 1500W AC input on a standard UK outlet (or 0-80% in about 30-40 minutes for quick top-ups during emergencies). For solar, it supports up to 500W input (single MPPT, 11-60V), typically achieving a full charge in around 2-3 hours under ideal sunlight with compatible panels. Other options include car alternator charging (up to 800W for faster vehicle recharges), Smart Generator compatibility, or multi-charging combinations (e.g., AC + solar) for even quicker results. Real-world times vary by temperature, input stability, and load—use official cables and avoid extreme conditions for best performance.
Can I expand the DELTA 3’s capacity, and which extra batteries are compatible?
Yes, the 1024Wh base capacity expands up to 5kWh by connecting compatible EcoFlow extra batteries (such as DELTA 3 Extra Battery, DELTA 2/2 Max extras, or select DELTA Pro 3-compatible ones—check the official compatibility chart on EcoFlow’s site for your region). To connect, power off both units, securely link via the extra battery port (following the manual’s alignment and cable guide), then power on—the system auto-detects and displays the added capacity on the screen or app. This is great for longer runtime in home backup or off-grid setups, but use only officially supported extras to ensure safety and full integration.
Is the DELTA 3 quiet enough for indoor use, like bedrooms or offices?
It operates whisper-quiet at under 30 dB (often imperceptible) under lighter loads around 600W, and stays below 40 dB even at higher outputs like 1200W—making it one of the quieter options in its class, ideal for sleeping, working, or natural environments without disturbance. Fans may ramp up during heavy loads or fast charging, but users generally praise its low noise compared to traditional generators. If abnormal or louder sounds occur, check for dust buildup, ventilation, or contact support.
How does the UPS function work, and is it reliable for sensitive devices?
The built-in UPS (Uninterruptible Power Supply) mode provides a seamless switchover time of under 10ms when the unit is plugged into the wall—ensuring no interruption for connected devices like computers, NAS systems, routers, or medical equipment during brief outages. Plug critical items into the AC outlets while the DELTA 3 is in bypass/charging mode (it prioritizes grid power to preserve battery). For full blackout protection, keep it charged and monitor via the app. It’s highly regarded for reliability in home backup scenarios, though test your setup periodically.
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