Can the EcoFlow DELTA 3 run a full‑size refrigerator during a power outage?

Yes, the EcoFlow DELTA 3 portable power station supplies up to 1800 watts of continuous pure‑sine AC power, which is plenty for most Energy Star refrigerators that draw between 100 and 800 watts while the compressor is cycling. With its 1024 Wh LiFePO4 battery you can expect six to ten hours of runtime on a single charge, and you can extend that time indefinitely by adding solar panels or a Smart Extra Battery for larger capacity.

How quickly can I fully recharge the DELTA 3 with solar panels at a campsite?

Under full sun the DELTA 3 accepts up to 1000 watts of solar input, so a pair of 400 W‑class portable panels plus one 200 W suitcase panel can refill the battery from empty to 100 percent in roughly two and a half to three hours. Even a single 220 W bifacial panel will top it up by midday, making it a reliable solar generator for off‑grid camping, overlanding, or cabin stays.

Is the DELTA 3 quiet enough for indoor use with a CPAP machine at night?

Absolutely. The cooling fan engages only when internal temperatures rise, and it stays at a low, conversation‑level hum that most CPAP users hardly notice. Because the unit relies on a sealed LiFePO4 battery rather than gasoline, it produces zero fumes, so you can place it beside the bed for silent overnight power without ventilation concerns.

Can I expand the battery capacity later if my energy needs grow?

Yes, the EcoFlow DELTA 3 is compatible with EcoFlow Smart Extra Batteries. Add a 1 kWh, 2 kWh, or even a 4 kWh module through the Smart Generator Adapter to scale your system from 1 kWh to 4 kWh. This modular approach lets homeowners, RV travelers, and contractors start small and upgrade only when they need longer runtimes for appliances, tools, or extended outages.

Does the DELTA 3 support pass‑through charging so I can power devices while it recharges?

It does. The inverter and DC outputs remain active while the battery is receiving power from solar panels, AC wall outlets, or a vehicle’s 12 volt socket. This pass‑through capability means you can keep laptops, lights, and medical devices running continuously, turning the DELTA 3 into an uninterruptible power hub for home backup or mobile workstations.

EcoFlow

EcoFlow DELTA 3 1500 Portable Power Station

SKU: EFDELTA1500-US

Regular price: Price: $999.00
Regular price: List Price: $1,099.00
Sale price: Price: $999.00
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THE ECOFLOW DELTA 3 BRINGS RELIABLE POWER ANYWHERE YOU NEED IT

EcoFlow Delta 3 1500 is the next generation in smart, portable energy. With a 1500Wh LFP (LiFePO₄) battery and 1800W AC output (with 3300W surge), this compact powerhouse is built to keep your essential appliances, tools, and electronics running during home outages, RV adventures, or off-grid excursions. Designed for speed, flexibility, and long-term performance, the Delta 3 1500 gives you peace of mind and true energy independence.

EcoFlow DELTA 3 1500 Features

Ultra-Fast Charging: 0 to 100% in just 1.5 hours with AC input.

Solar-Compatible: Recharge with up to 400W solar input in 3.5 hours.

Expandable Capacity: Scale from 1.5kWh to 5.5kWh with extra batteries.

Massive Output Power: 1800W AC output (up to 2200W with X-Boost).

Power 13 Devices Simultaneously: Includes 15 versatile outlets (AC, USB-C, USB-A, DC).

Quiet, Emission-Free Operation: Perfect for indoor use or noise-sensitive areas.

RV & Off-Grid Ready: Portable, durable design for travel and remote power needs.

Reliable Backup with UPS Mode: 15ms switchover keeps essential devices running.

Long-Lasting Li-Ion Battery: Over 800 cycles for years of dependable power.

Hybrid Charging Options: Use AC + Solar or Smart Generator for flexible recharging.

Compact & Portable: Weighs 30.9 lbs, easy to carry and store.

Who is the EcoFlow Delta 3 1500 For?

Homeowners needing emergency backup power can rely on the Delta 3 1500 to keep essential appliances running smoothly during outages.

RV travelers and van lifers will appreciate its reliable, off-grid energy for life on the road, with easy recharging options wherever the journey takes them.

Outdoor enthusiasts and campers can enjoy portable, solar-compatible power that’s clean, quiet, and perfect for remote adventures.

Professionals on job sites will find it a powerful yet silent solution for running tools and equipment efficiently, without the noise and fumes of gas generators.

Expandable Up to 5.5kWh for Power That Grows with Your Needs

The EcoFlow Delta 3 1500 portable power station offers a flexible, expandable battery system designed to meet a wide range of power demands. With a base capacity of 1.5kWh, you can easily scale up to an impressive 5.5kWh by connecting the Delta 3 Extra Battery or other compatible models such as the Delta 2, Delta 2 Max, or Delta Pro 3 Extra Battery. This expandable energy storage makes it perfect for everything from weekend camping trips to extended off-grid living or home emergency backup.

Whether you need portable power for a few hours or continuous energy for days, the EcoFlow Delta 3 1500 adapts to your situation. Its modular design gives you the freedom to start small and grow your system as your energy needs increase. For RV users, van lifers, and remote workers, this means you’ll never run out of power, no matter where your journey takes you.

DELTA 3 1500 Expansion Battery Compatibility

The EcoFlow DELTA 3 1500 is compatible with most EcoFlow expansion batteries (sold separately). Connect your D3 1500 to any of these batteries to expand your power station's capacity from 1kWh up to 4kWh.

Please note that an EcoFlow Smart Generator Adapter is required for connecting any expansion battery with this power station.

Reliable Backup Power with Ultra-Fast UPS Mode

Ensure your critical devices stay powered during unexpected outages with the EcoFlow Delta 3 1500’s built-in UPS (Uninterruptible Power Supply) mode. With a lightning-fast 15-millisecond switchover time, the Delta 3 keeps essentials like medical equipment, home Wi-Fi networks, and office systems running without interruption. Whether you're at home or on the go, you can count on seamless, automatic backup power to protect what matters most.

Power Everything with Massive AC Output and X-Boost Technology

The EcoFlow Delta 3 1500 delivers a powerful 1800W AC output across 15 versatile outlets, giving you the freedom to run multiple devices at once, whether at home, on the road, or off-grid. From laptops and lights to essential appliances, it handles your daily power needs with ease. Need more? Activate X-Boost mode to surge up to 2200W, allowing you to operate high-demand appliances like refrigerators, microwaves, and power tools without worry. With the Delta 3 1500, you're equipped for any situation, from everyday tasks to heavy-duty power requirements.

Ultra-Fast Charging - 0 to 100% in Just 1.5 Hours

The EcoFlow Delta 3 1500 portable power station redefines fast charging with multiple high-speed options to keep you powered up wherever you are. With a 1500W AC input, it charges from 0 to 100% in just 1.5 hours, making it one of the fastest in its class. Prefer solar? Recharge via solar panels in only 3.5 hours for clean, off-grid energy. On the road? The 800W EcoFlow Alternator Charger provides a full charge in 2.1 hours while you drive. For maximum flexibility, both the EcoFlow Smart Generator and Hybrid Charging (AC + Solar) can deliver a full charge in just 1.5 hours as well. Whether at home, in your RV, or off-grid, the Delta 3 1500 ensures you're never left without reliable power.

What's in the Box?

EcoFlow DELTA 3 1500 Portable Power Station	x 1
AC Charging Cable	x 1
Car Charging Cable	x 1
DC5521 to DC5525 Cable	x 1
User Manual	x 1
Warranty Card	x 1

Specs

EcoFlow DELTA 3 1500 Specs

GENERAL SPECS
Weight	16 kg \| 35.3 lbs
Dimensions (W x D x H)	213 × 398 × 281.5 mm \| 7.9 × 15.7 × 11.1 in
Operating Altitude	< 2000 m (6562 ft)
Pollution Degree	2

OUTPUT SPECS
Output	Pure sine wave, total 1800W, surge 3600W
DC Output Port (USB-A)	5V⎓2.4A, 12W Max per port, total 24W; Fast Charge: 5V⎓2.4A / 9V⎓2A / 12V⎓1.5A, 18W Max per port, total 36W
DC Output Port (USB-C)	5V / 9V / 12V / 15V⎓3A Max, 20V⎓5A Max, 100W Max per port, total 200W
12V DC Output Port	Total 126W: DC5521: 12.6V⎓3A, Cigarette Lighter: 12.6V⎓10A

INPUT SPECS
AC Input Socket	100-120V～15A (50Hz/60Hz)
DC Input Port (XT60) Solar Input	11-60V⎓15A, 500W Max, Car Input: 12V⎓8A Max

BATTERY SPECS
Rated Capacity	1536Wh (51.2V⎓30Ah)
Cell Chemistry	LFP (LiFePO₄)
Cycle Life	70%+ capacity after 3000 cycles
Protection Type	Over Voltage, Overload, Over Temperature, Short Circuit, Low Temperature, Low Voltage, Overcurrent Protection
Extra Battery	The DELTA 3 1500 supports: EcoFlow DELTA 3 Smart Extra Battery (1kW) EcoFlow DELTA 2 Smart Extra Battery (2kWh) EcoFlow DELTA Max Smart Extra Battery (2kWh) EcoFlow DELTA 2 Max Smart Extra Battery (2kW) EcoFlow DELTA Pro 3 Smart Extra Battery (4kWh)

TEMPERATURE SPECS
Optimal Operating Temperature	20°C-30°C (68°F-86°F)
Charge Temperature	0°C-45°C (32°F-113°F)
Discharge Temperature	–10°C to 45°C (14°F-113°F)
Storage Temperature	–10°C to 45°C (optimal: 20°C to 30°C); 14°F to 113°F (optimal: 68°F to 86°F)