EcoFlow Delta Pro 3
(4 reviews)
4096Wh and 4000W output to power a whole home, quiet (30 dB) and expandable up to 12 kWh: the home backup station par excellence.
- Capacity: 4096 Wh (LiFePO4, 4000 cycles)
- Output: 4000W (X-Boost 6000W)
- Expandable: From 4 to 12 kWh (add-on batteries)
- Recharge: 0 to 80% in 1 h, solar 2600W
- 4096Wh, 4000W, home backup
Detailed overview: EcoFlow Delta Pro 3 4096Wh power station
The EcoFlow Delta Pro 3 is a 4096 Wh portable power station that plays in the league of home backup plants. It delivers 4000 W of continuous output, with X-Boost technology climbing up to 6000 W when needed, enough to power a home's high-demand appliances, from the washing machine to an EV charger and large tools.
Its 4096 Wh capacity is expandable from 4 to 12 kWh by adding extra batteries, letting you size the reserve to your needs, from an occasional outage to several days of autonomy. In a failure, the under-10 ms switchover keeps the fridge, lights and essential equipment running with no perceptible interruption. Its LiFePO4 battery targets around 4000 cycles, meaning a decade of use.
It also shines with its quiet, only 30 dB at 2000 W, more discreet than a running fridge, a rare asset for a device of this power. On recharging, it accepts up to 2600 W of solar input to store surplus production during the day, and recharges 0 to 80% in one hour from the mains (or to 80% in 1.5 hours on solar). Designed as plug-and-play, on wheels with a telescopic handle, it suits homes, motorhomes and off-grid cabins.
Note: backup use on an electrical panel requires a manual transfer switch installed by a certified electrician. Powerful, quiet and scalable, the Delta Pro 3 is for anyone who wants a genuine mobile home backup solution, without the constraints of a fixed installation.
Full specifications
Detailed characteristics (EAN: 4895251622622)
Battery and capacity
| Rated capacity?Total stored energy in watt-hours. The higher the figure, the longer the runtime. | 4096 Wh |
|---|---|
| Delivered energy, measured?Energy that actually leaves the battery and reaches the devices. Always below the stored energy, as conversion costs heat. Taken from our in-depth review. | 3790 Wh |
| Max capacity (with extensions)?Total capacity reachable by adding extra batteries. | 12288 Wh |
| Expandable capacity?Whether capacity can be increased with add-on batteries. | Yes |
| Removable battery?The main battery can be removed or replaced by the user. | No |
| Battery chemistry?LiFePO4 (LFP) lasts far longer and is safer than NMC. | LFP (LiFePO4) |
| Charge cycles?Number of full charges before capacity drops to the stated threshold. | 4000 cycles (80 %) |
AC output
| Continuous AC power?Power the unit can sustain continuously on its 230 V outlets. | 4000 W |
|---|---|
| Surge power?Brief peak tolerated when starting motor or compressor devices. | 8000 W |
| Boost-mode power?Extended power via a proprietary mode (X-Boost, AmpUp…) by lowering voltage. | 6000 W |
| Inverter type?A pure sine wave is essential for sensitive electronics and motors. | Pure sine wave |
| AC voltage / frequency?Voltage and frequency of the AC output (230 V / 50 Hz in Europe). | 230 V / 50 Hz |
| Number of 230 V AC outlets?Number of mains outlets available on the unit. | 5 |
| RV / TT-30 outlet?Dedicated 30 A outlet for North-American style RVs. | No |
Recharging
| Max AC charging power?Maximum power drawn from a wall socket; higher means faster charging. | 2900 W |
|---|---|
| AC charge 0-80%?Stated time to go from 0 to 80% on mains power. | 60 min |
| Max solar input?Maximum solar power accepted at the input (PV panels). | 2600 W |
| Accepted solar voltage?Panel voltage range compatible with the solar input. | 11 to 150 V |
| Max solar current?Maximum current accepted on the solar input. | 20 A |
| MPPT controllers?Number of independent MPPT solar inputs (yield optimisation). | 2 |
| Vehicle charging (12/24 V)?Can be charged from a vehicle's cigarette-lighter socket. | Yes |
| Pass-through charging?The unit can power devices while charging (pass-through). | Yes |
Ports and connectors
| USB-C ports?Number of USB-C ports and the fastest port's power (laptops, phones). | 2 × 100 W |
|---|---|
| USB-A ports?Number of USB-A ports and maximum power (small devices). | 2 × 18 W |
| 12 V output (car socket)?12 V cigarette-lighter output and its power (coolers, pumps…). | No |
| Other DC outputs?Additional DC connectors (Anderson, DC5521, XT60…). | DC5521, Anderson |
Portability
| Weight?Net weight of the unit, battery included. | 51.5 kg |
|---|---|
| Dimensions (L × W × H)?Overall size of the unit in millimetres. | 693 × 341 × 410 mm |
| Form factor?Portable (hand-carried), transportable (heavy), or wheeled. | Wheeled |
| Wheels?Built-in wheels for moving the unit. | Yes |
| Telescopic handle?Retractable handle like a wheeled suitcase. | Yes |
Safety and environment
| Certifications?Standards and approvals obtained (CE, RoHS, UN38.3, UL…). | CE, RoHS, UN38.3 |
|---|---|
| Discharge temperature?Temperature range in which the unit can deliver power. | -10 to 45 °C |
| Charge temperature?Temperature range in which the unit can be recharged. | 0 to 45 °C |
| Ingress protection (IP)?Resistance to dust and water (e.g. IP54). | IP20 |
Backup / UPS
| UPS / EPS mode?Automatic switch to battery on a mains outage (backup). | Yes |
|---|---|
| Switchover time (rated)?Delay before switching to battery; under 20 ms suits a PC or router. | 10 ms |
Noise and thermal
| Noise level (rated)?Manufacturer-stated noise; a quiet room is around 30 dB. | 30 dB(A) |
|---|---|
| Quiet mode?Setting that limits fan noise, often by capping charge power. | No |
| Self-heating battery?Battery pre-heating to allow charging in cold weather. | No |
Display and connectivity
| Display?Type of screen showing power, runtime and alerts. | LCD |
|---|---|
| Bluetooth?Bluetooth link for nearby control. | Yes |
| Wi-Fi?Wi-Fi connection for remote control and monitoring. | Yes |
| Mobile app?iOS / Android app to control the unit. | Yes |
| Local control (no cloud)?Control possible over Bluetooth without an account or internet. | Yes |
| Solar connector?Connector type of the solar input (XT60, Anderson, MC4…). | XT60i |
Availability and warranty
| Market launch?Date the model first became available on the European market. Useful to place its generation: technology moves fast in this segment, and a device several years old may be at the end of its commercial life. | September 2024 |
|---|---|
| Warranty?Length of the manufacturer's warranty. | 5 years |
User manual / Instructions for use
⚡ How long will this power station run a device?
With 4,096 Wh, the EcoFlow Delta Pro 3 external battery runs a fridge (50 W) for ~70h or an LED TV (90 W) for ~39h.
| Home | Runtime |
|---|---|
| Mini fridge (45 W) | ~77h |
| Refrigerator (50 W) | ~70h |
| Freezer (60 W) | ~58h |
| American fridge (150 W) | ~23h |
| Outdoor & workshop | Runtime |
|---|---|
| CPAP machine (40 W) | ~87h |
| LED TV (90 W) | ~39h |
| Nebulizer (100 W) | ~35h |
| Sander (300 W) | ~12h |
Rough estimate: real consumption varies, and very power-hungry appliances (heating elements) must stay below the output power.
What is this power station best for?
-
Home & Power cuts Ideal
With 4096 Wh, 4000 W and a 240 V output, the Delta Pro 3 is the ultimate home backup station: it powers an entire home during an outage, heavy appliances included (well pump, water heater, air conditioning, large appliances), where most stations cap out. Its UPS function switches over in under 10 ms for an invisible transition, and its expansion to 12 kWh, or more by pairing several units, covers multi-day outages with complete peace of mind. Its 8000 W peak absorbs the most violent startup surges, and its exceptional solar input up to 2600 W recharges it very fast whenever the sun is out. Quiet (30 dB) and wheel-mounted despite its 51.5 kg, it forms the core of a true residential backup system, durable (LiFePO4, 4000 cycles) and warranted for 5 years.
-
Off-grid & Solar Ideal
With an exceptional solar input (up to 2600 W) and expansion to 12 kWh, extendable by pairing several units, the Delta Pro 3 is a complete storage system for fully autonomous off-grid living: remote home, farm, chalet or workshop. Its 4000 W and 240 V output power absolutely everything, fridge, freezer, pump, heavy tools and large appliances, without the restrictions of more modest stations. In good weather it banks solar energy at a rare rate and delivers it over several days. Its LiFePO4 battery (4000 cycles) withstands years of daily cycling, and app control with smart circuit management makes it a genuine alternative to a grid connection, silent and fuel-free.
-
Job site & Tools Ideal
On a fully off-grid site, the Delta Pro 3 replaces a professional generator: its 4000 W and 240 V output start and run the most demanding machines, a mitre saw, industrial compressor, welder or cement mixer, where conventional stations give up. Its 8000 W peak absorbs startup surges, and its five outlets feed an entire mobile workshop. Its 4096 Wh, expandable to 12 kWh, cover several days of intensive work, and a solar input up to 2600 W recharges quickly on site. Quiet (30 dB) and fume-free, it can be used indoors or in inhabited areas. Its wheels ease movement despite its 51.5 kg.
-
Motorhome & Van life Suitable
Wheel-mounted, the Delta Pro 3 turns a large motorhome into a truly autonomous home: its 4096 Wh cover a fridge, full electric cooking, a water heater and even light air conditioning for several days, and its 4000 W with 240 V output accept every onboard appliance without exception. A solar input up to 2600 W recharges very fast at a stop in good weather, for near-unlimited autonomy in sunny travel. Its main drawback remains its 51.5 kg weight and size: it is reserved for large vehicles with a dedicated bay, where it is installed permanently rather than moved daily.
-
Events & Market stalls Suitable
Powerful and quiet (30 dB), the Delta Pro 3 advantageously replaces a generator for a larger outdoor event: its 4000 W and 240 V output power a substantial PA system, stage lighting, a full control desk, a catering stand or demanding audiovisual gear, and its 4096 Wh (expandable to 12 kWh) cover long stretches of activity. Its five outlets share power among participants, and a solar input up to 2600 W allows recharging on site. A major asset for venues where noise and smells are banned, weddings, festivals, shoots; its wheels ease setup despite its 51.5 kg.
Our team's recommendations based on the model's capacity, output power and weight.
Compatible solar panels
A selection of photovoltaic panels that suit this station's solar input (up to 150V / 2600W), best match first.
Comparison
At around £2565 to £3249, the EcoFlow Delta Pro 3 compares with high-end power stations of roughly 4 kWh, targeted by searches such as "home backup battery" or "4000W power station". Here is how it sits against three references: the EcoFlow Delta Pro (previous generation), the Anker SOLIX F3800 and the Bluetti AC300 + B300.
| Criterion | EcoFlow Delta Pro 3 | EcoFlow Delta Pro | Anker SOLIX F3800 | Bluetti AC300 + B300 |
|---|---|---|---|---|
| Capacity | 4096 Wh | 3600 Wh | 3840 Wh | 3072 Wh |
| AC output | 4000W (X-Boost 6000W) | 3600W | 6000W | 3000W |
| Expandable | Up to 12 kWh | Up to 25 kWh | Up to 26.9 kWh | Up to 12.3 kWh |
| Noise | 30 dB at 2000W | Moderate | Moderate | Moderate |
| Observed price | ≈ £2799 | ≈ £2564 | ≈ £2992 | ≈ £2308 |
In short, the Delta Pro 3 stands out for the largest base capacity (4096Wh), remarkably quiet operation (30 dB) and strong solar input (2600W). The Anker SOLIX F3800 hits harder on output (6000W continuous) and expansion, while the Bluetti is more affordable but less powerful. For a mobile, powerful and quiet home backup plant, the Delta Pro 3 sits right at the top of the basket.
Related video
Video: The EcoFlow Delta Pro 3 Has 1 Problem - Published on 25/06/2024
Our tester's review: Christophe Delpuech
We put the Delta Pro 3 through its paces as a home backup power plant, and the experience is close to that of a fixed installation, without the building work. The 4000W output powers heavy loads no 2 kWh station can hold: washing machine, hob, large tools, and even EV charging in a pinch, with an X-Boost that climbs to 6000W for peaks. Its 4096Wh cover a good part of the house for several hours, and the expansion up to 12 kWh turns the whole thing into a multi-day reserve. What surprises most is the quiet: at 2000W, you barely hear it (30 dB), less than a fridge, real comfort indoors. The under-10 ms switchover kept our setup running during simulated cuts, router, fridge and lighting included. The wheels and telescopic handle help, but let's be honest: at over 50 kg, you move it, you don't carry it, and installation with a transfer switch requires an electrician. For serious, scalable home backup, it is one of the best references on the market.
Frequently asked questions: EcoFlow Delta Pro 3 4096Wh power station
With 4000W continuous (6000W X-Boost) and a 4096Wh capacity expandable to 12 kWh, it powers a home's heavy appliances. Wired to a transfer switch (installed by an electrician), it serves as backup for the electrical panel.
Yes, remarkably: around 30 dB at 2000W, quieter than a running fridge. It is one of its assets for indoor use, rare for a station of this power.
From the mains, it goes from 0 to 80% in about one hour. On solar, it accepts up to 2600W of input and reaches 80% in about 1.5 hours, ideal for storing surplus production.
Yes. Its capacity goes from 4 to 12 kWh by adding extra batteries, enough to cover several days of autonomy or an extended outage depending on your needs.
Need help choosing?
Other products in the "Very high-capacity & expandable" category
Allpowers R3500 V2
See price (4)
2880Wh and 3500W (7000W peak): the powerful station that recharges fully in one hour, protects your devices during outages and doubles its capacity in parallel.
Allpowers R4000
See price (5)
3456Wh and 3600W in a wheeled format: the big station that backs up the whole home, recharges to 100% in one hour and is controlled by voice.
Bluetti Elite 300
1599.00£ (4)
3014 Wh, 2400 W (4800 W surge) in just 26.3 kg: certified by Frost & Sullivan as the world's most compact 3 kWh power station.
Bluetti Elite 400
1999.00€ (2)
3840Wh and 2600W (3900W Power Lifting) in a rolling power station: 80% recharge in 1h, 15ms UPS switching and remote Wi-Fi control.
Published on 09/07/2026, updated on 14/08/2026