A very large reserve for the DELTA Pro 3
At 4096 Wh, this extra battery ranks among the biggest expansions you can attach to a portable power station. It relies on LiFePO4 chemistry and targets people for whom a few hours of runtime are not enough: a house to be fed during a prolonged outage, a remote job site, an open-air event or an off-grid dwelling.
Use cases
For a household
A family wanting to keep a fridge, a freezer, an electrically controlled boiler, lighting and device charging going through a grid incident gets a large margin. It is also useful in a holiday home partly fed by solar panels, storing the day’s surplus and handing it back in the evening.
For trades and business
A building firm, a festival organiser or a farmer can power tools, sound or pumps without noise or local emissions, provided the loads stay within the limits of the station.
Size and mass
The unit measures 694 x 295 x 215 mm and weighs about 33 kg. It does not move like a bag: plan on two people or a trolley, and a surface that can bear the load. Its elongated shape lends itself to lying flat along a wall or in a van’s storage compartment.
Connection and positioning
- Choose a dry, level and ventilated area away from any heat source.
- Place the battery right next to the station so the cable is not stretched.
- Connect them with the original cable, with both devices off.
- Switch on and check the station’s screen: the combined capacity should appear.
Exact compatibility with your station and any link to a building’s electrical installation are matters for the manual and a qualified installer.
What matters
- 4096 Wh of capacity, the largest in this group
- LiFePO4 chemistry
- Elongated format, useful for flat storage
Technical specifications
- Manufacturer: Ecoflow
- Battery type: LiFePO4
- Capacity: 4096 Wh
- Dimensions: 694 x 295 x 215 mm
- Weight: approx. 33 kg
Safety
Handle it carefully with bent knees, and never alone if in doubt. Protect it from rain and immersion, keep it away from flames and never open it. Use the manufacturer’s cables and do not exceed the power figures in its manual.
Care and storage
Wipe it with a dry cloth and keep it in a temperate room. For prolonged storage, follow the charge level advised in the manual and check it regularly. Keep it away from heat sources and damp places.
Think before adding 4096 Wh
A reserve like this has considerable weight and a long recharge time. Estimate the energy you need over a day, your means of recharging (mains, solar panels) and the space available. This approach avoids oversizing the purchase. Finally, think about the access route: stairs, a narrow door or a low boot all complicate moving a block of this mass, so measure the path in advance.
