EcoFlow Delta 3 Max Plus Extra Battery 2048Wh | EFD3MP-EB

• Adds 2048Wh - doubles total capacity of DELTA 3 Max Plus to 4096Wh
• Automotive-grade Full-Tab LFP Cells rated for 3,000+ charging cycles
• Plug-and-play connection - no configuration required
• Approximately 25% smaller in volume than the DELTA 2 Max Smart Extra Battery
• EcoFlow App monitoring for charge level, temperature and working status
• Supports connection of a second extra battery via EcoFlow Smart Extra Battery Expansion Adapter (sold separately)
• Operating temperature range from -10°C to 45°C
• Battery cable included in the box
• Manufacturer warranty: 3 years
• Dimensions: 494 x 239 x 196 mm

EcoFlow DELTA 3 Max Plus Smart Extra Battery - 2048Wh Expansion Battery

Double your storage capacity:

The EcoFlow DELTA 3 Max Plus Smart Extra Battery connects directly to your DELTA 3 Max Plus power station, adding 2048Wh and bringing total system capacity to 4096Wh. If you need even more storage, a second extra battery can be added using the EcoFlow Smart Extra Battery Expansion Adapter (sold separately), taking the DELTA 3 Max Plus system to 6144Wh.

Built for long-term reliability:

This extra battery uses Automotive-grade Full-Tab LFP Cells - a full-tab cell design that reduces internal resistance, generates less heat, and maintains higher efficiency across each charge cycle. The battery is rated for over 3,000 charging cycles, making it suitable for regular, long-term use in home backup or off-grid applications.

Compact and practical to use:

At 494 × 239 × 196 mm and 16 kg, this unit is approximately 25% smaller in overall volume than the previous DELTA 2 Max Smart Extra Battery, making it easier to store alongside or beneath your power station. Connection is via a 4+8 high-current port using the included cable - simply plug in and the EcoFlow App picks up the new unit automatically for charge and temperature monitoring.

Shop the full Power Stations & Solar range from Heavins.ie, supplying homes and businesses across Ireland with reliable off-grid energy solutions.

Key Features

Rated Capacity - 2048Wh (51.2V, 40Ah) of additional storage for your DELTA 3 Max Plus system.
Automotive-grade Full-Tab LFP Cells - reduced internal resistance, lower heat output, and a longer cycle life compared to standard cell designs.
3,000+ Charging Cycles - built for long-term, repeated use without significant capacity degradation.
Plug-and-Play Connection - connects to the DELTA 3 Max Plus via the included battery cable; no configuration or setup required.
EcoFlow App Compatible - monitor charge level, working status, and temperature from your smartphone.
Expandable to Two Batteries - add a second Smart Extra Battery using the EcoFlow Smart Extra Battery Expansion Adapter (sold separately) for up to 6144Wh total on the DELTA 3 Max Plus system.
Wide Operating Temperature - discharge temperature range of -10°C to 45°C for use in variable conditions.
Multiple Protections - over voltage, overload, over temperature, short circuit, low temperature, low voltage, and overcurrent protection built in.

Specifications

• Model: EFD3MP-EB
• Rated capacity: 2048Wh (51.2V, 40Ah)
• Cell technology: Automotive-grade Full-Tab LFP Cells
• Charge cycles: Over 3,000
• Extra Battery Port output: 43.2V-57.6V, 100A max
• Extra Battery Port input: 43.2V-57.6V, 48A max
• Charge temperature: 0°C to 45°C
• Discharge temperature: -10°C to 45°C
• Storage temperature: -10°C to 45°C
• Dimensions (HxWxD): 494 x 239 x 196 mm
• Weight: 16 kg (± 0.4 kg)
• Certifications: FCC, UL
• Manufacturer warranty: 3 years

What's Included in the Box

• 1 x EcoFlow DELTA 3 Max Plus Smart Extra Battery
• 1 x EcoFlow DELTA 3 Max Plus Smart Extra Battery Cable
• 1 x User manual

We are pleased to offer FREE delivery on orders over €499.00 to anywhere in the Republic of Ireland and Northern Ireland, and our Click & Collect service is FREE on all orders.

All items are shipped from the Athlone Warehouse in Co. Westmeath, Ireland so no import duties apply to the island of Ireland.

Delivery Costs to Republic of Ireland are €6.99 for orders Under €499.00

Same Day Dispatch €9.99
Orders placed before 12pm are dispatched the same working day, helping your items reach you sooner. Excludes bulky items.

Large Bulky Items
Please be aware that large, bulky items (large appliances, white goods, etc.) have a delivery charge of €39.99 for bulky items or €59.99 for extra bulky items to ROI

- We are now delivering to Northern Ireland with all delivery costs equal to the Republic of Ireland.

View our full Delivery & Collection information

Due to our valued customer feedback, we have updated and improved our Returns Policy.

We now offer an exhange or refund on goods purchased online, and returned 14 days after purchase.

View our Full Returns Policy