# EF ECOFLOW DELTA Pro 3 Extra Battery, 4096Wh

EF ECOFLOW DELTA Pro 3 Extra Battery is a 4096Wh LFP expansion battery for the DELTA Pro 3 power station. It is aimed at buyers who want additional stored energy for home backup, camping or motorhome use, but it is an expansion unit rather than a clearly documented standalone power station.

- [Original product page](https://bargainpostbox.co.uk/product/ef-ecoflow-delta-pro-3-extra-battery-4096wh)
- [View offer](https://bargainpostbox.co.uk/visit/ef-ecoflow-delta-pro-3-extra-battery-4096wh)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: EF ECOFLOW
- Model: Delta Pro 3
- Category: Tools & Garden > Power & Backup Energy > Expansion & Energy Storage Batteries
- Price: 1595.05 GBP
- Previous price: 2199.00 GBP
- Discount: 27%
- Price checked: 2026-11-12T14:58:24.073Z
- Rating: 3.8 / 5
- Reviews: 9

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Designed as an additional battery for the DELTA Pro 3, with claims of up to 12kWh total capacity when expanded.
- LFP cells are claimed to retain 80% capacity after 4000 cycles.
- The listing describes support for 230V and 4000W output, but presents this as a product output claim rather than a clearly explained battery-only specification.

## Pros

- The stated 4096Wh capacity gives DELTA Pro 3 owners a substantial extra energy store.
- The LFP chemistry and stated 4000-cycle figure provide useful longevity context for frequent backup or off-grid use.
- The listing describes parallel expansion with up to two extra batteries on the DELTA Pro 3.

## Cons

- This is an add-on battery intended for the DELTA Pro 3, so it is not the straightforward choice for someone seeking a complete standalone power station.

## Specifications

### Identity
- Brand: EF ECOFLOW
- Model: Delta Pro 3
- Power configuration: Battery
### Dimensions and installation
- Dimensions listed: 40L x 40W x 40H centimetres
### Materials and protection
- Material listed: Metal \(Likely Steel Or Aluminum\)
### Battery and expansion claims
- Capacity in title: 4096Wh
- Battery chemistry: LFP battery cells
- Cycle life claim: 4000 cycles till it reduces to an 80% capacity
- Maximum stated capacity with expansion: 12kWh
- Battery warranty claim: 5 years.

## Before you buy

- Listing details are inconsistent: the title says 4096Wh while feature text calls it 4000Wh, and separate generator-style fields list 12V, one outlet, 6000W starting power, 4000W running power, 50Hz and a two-hour runtime without clearly establishing that they apply to this extra battery. Output, X-Boost and charging-method claims describe the wider DELTA Pro 3 system, so confirm the selected configuration and compatibility before purchase.

## In the box

- EcoFlow DELTA Pro 3 (Included): The explicit included-components field names the DELTA Pro 3, although the product title identifies an extra battery. Confirm the selected listing's contents.

## A good fit for

- DELTA Pro 3 owners who want more stored energy for home backup, emergencies or extended trips.
- Buyers considering a modular battery expansion for camping or motorhome use.

## Less suited to

- Shoppers who need a complete power station and have no DELTA Pro 3 system to pair it with.
- Buyers who need a clearly specified standalone outlet or runtime configuration.

## Customer feedback

Customer rating figures are mixed, with five-star ratings forming the largest share but a notable one-star share as well. With a small rating sample and no written feedback supplied, these figures do not explain the reasons behind the ratings or establish specific strengths or faults. Buyers should base compatibility and capacity decisions on the DELTA Pro 3 system details and confirm the kit contents.

## Frequently asked questions

### Does this listing describe a complete power station?
It is titled as an extra battery for the DELTA Pro 3. The listing's included-components field also names the DELTA Pro 3, so check the selected listing carefully to confirm exactly what is supplied.
### How much capacity can the system reach?
The listing says extra batteries can expand the DELTA Pro 3 to 12kWh and that up to two batteries can be connected in parallel. Its capacity figures differ between the 4096Wh title and 4000Wh feature text.
### What battery lifespan does the listing claim?
It claims 4000 cycles before the battery reduces to 80% capacity, described as almost 11 years of regular use. Actual lifespan depends on use and conditions, which the listing does not specify.

## Alternative options

- [EF EcoFlow DELTA 3 Max Plus Extra Battery, 2048Wh LFP Battery \| Stackable, Expandable Backup Power for Camping, Home Emergencies, Mobile Homes, and Campers](https://bargainpostbox.co.uk/visit/ef-ecoflow-delta-3-max-plus-eb-2048wh-extra-battery)
- [EF ECOFLOW Delta 3 Portable Power Station, 1024Wh LiFePO4 Battery \| 0-70% Quick Charge in 30 Min, Expandable to 5kWh, Backup Power with UPS for Home, Camping & RV](https://bargainpostbox.co.uk/visit/ef-ecoflow-delta-pro-3-extra-battery-4096wh)
- [EF EcoFlow STREAM 5000 Balcony Power Plant with Battery Storage 5024Wh \| 5000W Solar Input \(4 MPPT\), 3000W Dual AC Ports, Expandable to 90kWh, 10000-Cycle LFP Battery, AI Smart Control](https://bargainpostbox.co.uk/visit/ef-ecoflow-delta-pro-3-extra-battery-4096wh)
- [EF ECOFLOW Delta 3 Portable Power Station, 1024Wh with 220W Solar Panel \| LiFePO4 Battery, 0-70% Quick Charge in 30 Min, Expandable to 5kWh, Backup Power with UPS for Home, Camping & RV](https://bargainpostbox.co.uk/visit/ef-ecoflow-delta-3-portable-power-station-1024wh-220w-solar-panel)
- [EF ECOFLOW Alternator Charger 600W, 6× Fast Charging 1kWh in 1.9 Hours \| Charge While Driving, App & Car Control, 3 Modes, Reverse Charging, 8-Layer Safety, Universal Power Station Car Charger](https://bargainpostbox.co.uk/visit/ef-ecoflow-delta-pro-3-extra-battery-4096wh)
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- [EF EcoFlow STREAM 5000 with Storage 5024Wh with Dual CT Smart Meter \| 5000W Solar Input \(4 MPPT\) Balcony Power Plant, 3000W Dual AC Ports, Expandable to 90kWh, 10000-Cycle LFP Battery, AI](https://bargainpostbox.co.uk/visit/ecoflow-stream-5000-home-battery-dual-ct-smart-meter)
- [EF ECOFLOW Stream Ultra X 3.84kWh Balcony Power Plant, 4 MPPT\(Renew\) \| 2.8KW Solar Input, 1.2KW Dual AC port, 6000 Charging Cycles, 23kWh Expandable, TOU, AI Intelligent Control](https://bargainpostbox.co.uk/visit/ef-ecoflow-delta-pro-3-extra-battery-4096wh)
- [EF ECOFLOW STREAM Ultra and 2\*AC Pro 5.76 kWh, Solar Kit Batteries \| Dual AC connection, expandable capacity up to 11.52 kWh, 6000 charge cycles, Smart AI](https://bargainpostbox.co.uk/visit/ef-ecoflow-delta-pro-3-extra-battery-4096wh)
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- [NOCO GENIUS2X2 6/12V 2-Bank Battery Charger, Trickle Charger & Maintainer \| Charges 2 Batteries at Once \(2A Each\), Temperature Compensation, Overcharge Protection, Desulphator, For Lead-Acid & Lithium](https://bargainpostbox.co.uk/visit/ef-ecoflow-delta-pro-3-extra-battery-4096wh)
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## Images

![EF ECOFLOW DELTA Pro 3 Extra Battery, 4096Wh — 1](https://bargainpostbox.co.uk/i/QT6nAEYgg02W4148W_woW-sv-GTBO5IcrHfEIz5_SppLgO9Z6Ufhvi_W8mK6R4O0Xjv_ZEkM4WNmVHN8P54Oy7Kyr8farHcjcE1xNy3heQzAk5PTM8pvVpUA.jpg)

![EF ECOFLOW DELTA Pro 3 Extra Battery, 4096Wh — 2](https://bargainpostbox.co.uk/i/-jXxM_l0GKEhy5kowFxGiF1Hwha2Miz4EpZ0Um_pjHUUoUuItqoYXr4G2KT42Bcq0elQz6T88VRtt18zi_tfVTBhrxqFaBP8ih672WiMzMBvZmqvtuIysUXg.jpg)

![EF ECOFLOW DELTA Pro 3 Extra Battery, 4096Wh — 3](https://bargainpostbox.co.uk/i/3Um08HmKaf1rBpQwLHQ1TaBp5p_Zz8ww3w20dUS1I35I0M7BRKoTK6b5a8UT6BAnPYUaj2YFbMW3zxkyNY5k20nKtglTKkG6WvqdiuPYENMy7mIN7CFn5nRn.jpg)

![EF ECOFLOW DELTA Pro 3 Extra Battery, 4096Wh — 4](https://bargainpostbox.co.uk/i/K71nNhDNO2dmbQjSJdy62PBMbROa-MoN0RlWxUsw0f2r2n_ThTEBccSa7E6pvP7Xv3kJKHLX-kEVT-rn8HnzPmYZSqbQg2CIQ44sLyht9zv7qUfAwa9xD_mE.jpg)

![EF ECOFLOW DELTA Pro 3 Extra Battery, 4096Wh — 5](https://bargainpostbox.co.uk/i/v4EmqOfZkClEujFW2CNTMPAk6OR3Qjl2MUc40Rz8ogDHMVR-Ts1CeBQ1oMEXPYmAkaL9GUvLwcY2E9WXUnpKt3gxwSCGm2dXmpnReov6Vk8kUYHDutpdeVub.jpg)

![EF ECOFLOW DELTA Pro 3 Extra Battery, 4096Wh — 6](https://bargainpostbox.co.uk/i/wamz8akPESYZ1Snw38gHVfZNneorRfC8j8CYB2IODFJaiUP7qmmELLz3P8JXb5lZOLt9wjxgxAlf28BfC1aP74xUm65gomfNQTzts4GFQhWKs9AEPw7cgUFx.jpg)