EcoFlow brand store
4,999 €
Deliveryabout 3–7 days
Returns–
Colour: grey No reviews at this shop yet
To EcoFlow EcoFlow DELTA Pro Ultra
Its kind or too few of its facts are known yet, so it is not in our ranking.
4,999 €
Prices per shop
On 4 November 2026 the lowest price for the EcoFlow DELTA Pro Ultra is 4,999 € at EcoFlow (brand store), delivery to Germany included.
All prices include VAT and delivery to Germany. We may earn a commission when you buy through these links. It never changes our ranking.
Deliveryabout 1–2 days
Returnsreturns through the seller, at least 14 days by law
No reviews at this shop yet Shop reviews on Trustpilot
To Amazon.de EcoFlow brand store
6,998 €7,597 € Discount as claimed by the shop. We have not followed this shop for the 30 days before the sale began, so we cannot verify the old price yet.How we work this out
Deliveryabout 3–7 days
Returns–
Colour: grey No reviews at this shop yet
To EcoFlow Deliveryabout 1–2 days
Returnsreturns through the seller, at least 14 days by law
No reviews at this shop yet Shop reviews on Trustpilot
To Amazon.de At the same price, a shop in your own country comes first, then a shop selling its own stock before a marketplace seller, then the shorter delivery time, then free returns and the longer return window. Commission never counts.
Price history
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Lowest since 3 Nov4,999 €
Highest since 3 Nov6,998 €
Price drops since 3 Nov0no drop seen yet
EcoFlow DELTA Pro Ultra specifications
The numbers that matter first, then every fact by group. As published by the maker or the shop we read it from.
EcoFlow · on the market since June 2025
Kind of system 1 fact
- Kind of system
Source: derived, no source of its own · checked on 2 Nov
How the battery connects to your home: to a socket, to a balcony solar system, through a hybrid inverter, on the AC side of an installed system, as a module for an inverter, or as a portable power station.
- Power station
Capacity 5 facts
- Nominal capacity
Among the models we track
6.1 kWh on this model
Lowest
1 kWh Highest
8 kWh Middle
2.4 kWhHigher than 28 of the 34 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The cells’ full capacity, before the reserve the battery keeps. The usable capacity is the figure to compare.
- 6.1 kWh
- Largest configuration
Among the models we track
30 kWh on this model
Lowest
6.7 kWh Highest
42 kWh Middle
11.5 kWhHigher than 30 of the 34 models we track.
Source: de.ecoflow.com · checked on 2 Nov
How far the system grows with extra batteries, in usable capacity.
- 30 kWh
- Batteries per system, at most
Among the models we track
5 on this model
Lowest
1 Highest
6 Middle
5Higher than 11 of the 37 models we track.
Source: de.ecoflow.com · checked on 2 Nov
How many battery units one system takes.
- 5
- Expansion battery
Source: de.ecoflow.com · checked on 2 Nov
The extra battery the maker sells to add capacity.
- DELTA Pro Ultra Zusatzbatterie
- Battery voltage
Among the models we track
102.4 V on this model
Lowest
16 V Highest
102.4 V Middle
41.6 VHigher than 20 of the 21 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The battery’s nominal voltage. A high-voltage battery works only with an inverter made for it.
- 102.4 V
Power 3 facts
- AC output
Among the models we track
6,900 W on this model
Lowest
800 W Highest
6,900 W Middle
1,200 WHigher than 35 of the 36 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The most power the battery delivers to your home without a break, as the maker states it.
- 6,900 W
- Bypass output
Among the models we track
2,900 W on this model
Lowest
2,000 W Highest
3,600 W Middle
2,300 WHigher than 9 of the 13 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The power passed straight through to the socket on the battery, such as when it is full or switched off.
- 2,900 W
- Phases
Source: Manual · checked on 2 Nov
Whether the battery connects to one phase or to all three.
- Single phase
Solar input 3 facts
- Coupling
Source: derived, no source of its own · checked on 2 Nov
Where the battery connects to the solar system: on the DC side, between the panels and the inverter, or on the AC side, behind the inverter.
- AC and DC
- Highest solar voltage
Among the models we track
450 V on this model
Lowest
55 V Highest
600 V Middle
60 VHigher than 18 of the 20 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The highest voltage the solar input takes. A string of panels must stay below it, on a cold day too.
- 450 V
- Tracker voltage, lowest
Among the models we track
30 V on this model
Lowest
10 V Highest
30 V Middle
16 VHigher than 21 of the 24 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The lowest voltage at which the tracker works at full power.
- 30 V
Battery life and warranty 4 facts
- Cell chemistry
Source: de.ecoflow.com · checked on 2 Nov
The cells’ chemistry. LFP cells last many cycles and are less prone to overheating than NMC cells.
- Lithium iron phosphate (LFP)
- Rated cycles
Among the models we track
3,500 on this model
Lowest
3,000 Highest
10,000 Middle
6,000Lower than 23 of the 25 models we track.
Source: de.ecoflow.com · checked on 2 Nov
How many full charge cycles the maker rates the cells for.
- 3,500
- Capacity after the rated cycles
Among the models we track
80 % on this model
Lowest
60 % Highest
80 % Middle
70 %Higher than 15 of the 17 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The share of capacity the maker says is left after the rated cycles.
- 80 %
- Warranty
Among the models we track
5 years on this model
Lowest
2 years Highest
12 years Middle
10 yearsLower than 33 of the 38 models we track.
When it matters
- A battery you buy to keep for ten years or more.
- A large and expensive system, where a failed cell costs a lot to replace.
When it matters less
- A small portable station you are likely to replace sooner hardly needs the extra years.
Source: de.ecoflow.com · checked on 2 Nov
How many years the maker’s warranty on the battery runs.
- 5 years
Backup power 4 facts
- Backup power
Source: de.ecoflow.com · checked on 2 Nov
What the battery powers during a power cut: nothing, a device at its own socket, chosen circuits, or the whole home.
- Selected circuits
- Switchover time
Among the models we track
20 ms on this model
Lowest
10 ms Highest
20 ms Middle
15 msHigher than 9 of the 14 models we track.
Source: de.ecoflow.com · checked on 2 Nov
How long the power is off before the backup takes over. The shorter, the more devices keep running.
- 20 ms
- Off-grid use
13 of the 16 models we track have this.
Source: de.ecoflow.com · checked on 2 Nov
Whether the system runs without any grid connection.
- yes
- Backup hardware
Source: de.ecoflow.com · checked on 2 Nov
The extra box or switch the maker needs for backup power, where it is sold separately.
- EcoFlow manueller Transferschalter (Manual Transfer Switch), installed by a certified electrician
Smart features 2 facts
- Connectivity
Source: de.ecoflow.com · checked on 2 Nov
How the battery connects to your network or the app.
- Wi-Fi, Bluetooth
- App
Source: de.ecoflow.com · checked on 2 Nov
The maker’s app for the battery.
- EcoFlow App
Build and placement 5 facts
- Protection rating (IP)
Source: de.ecoflow.com · checked on 2 Nov
How well the case keeps out dust and water. A battery that stands outdoors needs a higher rating.
- IP54
- Lowest operating temperature
Among the models we track
-20 °C on this model
Lowest
-20 °C Highest
-10 °C Middle
-20 °CLower than 1 of the 31 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The coldest temperature at which the battery works.
- -20 °C
- Highest operating temperature
Among the models we track
45 °C on this model
Lowest
45 °C Highest
60 °C Middle
55 °CLower than 29 of the 31 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The warmest temperature at which the battery works.
- 45 °C
- Lowest charging temperature
Among the models we track
-20 °C on this model
Lowest
-20 °C Highest
0 °C Middle
0 °CLower than 12 of the 19 models we track.
Source: de.ecoflow.com · checked on 2 Nov
The coldest temperature at which the battery still charges. Many cells may not charge below 0 °C without heating.
- -20 °C
- Noise
Among the models we track
30 dB on this model
Lowest
30 dB Highest
43 dB Middle
30 dBLower than 3 of the 11 models we track.
When it matters
- A battery in a hallway, a living room or next to a bedroom.
- A model with a fan that runs while it charges at full power.
When it matters less
- In a garage or a cellar nobody hears it.
Source: de.ecoflow.com · checked on 2 Nov
How loud the battery is while it runs, as the maker states it.
- 30 dB
Installation 1 fact
- Installation
Source: de.ecoflow.com · checked on 2 Nov
Whether you set the battery up yourself or an electrician has to connect it.
- Plug and play
Certificates and grid codes 1 fact
- Certificates and grid codes
Source: de.ecoflow.com · checked on 2 Nov
The safety standards and grid codes the maker states the battery meets.
- IEC 62109
Sources: de.ecoflow.com · Manual
The maker
EcoFlow
- Reviews on Trustpilot
- Founded in 2017
EcoFlow makes portable power stations, solar equipment and home energy storage, and was started in 2017 by a group of battery engineers. The company says it has regional headquarters in the USA, Germany and Japan. Its home batteries include the STREAM Ultra and the STREAM Ultra X, alongside the DELTA Pro 3 power station.