What is the EcoFlow DELTA 2 Max Smart Extra Battery?

The EcoFlow DELTA 2 Max Smart Extra Battery is a powerful portable power solution with a capacity of 2048 Wh. It is designed to connect to the DELTA 2 Max, effectively doubling the power capacity for off-grid applications.

How does the EcoFlow DELTA 2 Max Smart Extra Battery charge?

The DELTA 2 Max Smart Extra Battery uses EcoFlowu2019s X-Stream charging technology, allowing it to charge to 80% in just 1 hour and fully charge in 1.6 hours when connected to compatible EcoFlow devices.

Can I use the EcoFlow DELTA 2 Max Smart Extra Battery on its own?

No, the EcoFlow DELTA 2 Max Smart Extra Battery cannot be used independently. It must be connected to a compatible EcoFlow device, such as the DELTA 2 Max or DELTA Max.

What is the lifecycle of the EcoFlow DELTA 2 Max Smart Extra Battery?

The EcoFlow DELTA 2 Max Smart Extra Battery has an approximate lifecycle of over 3000 cycles when discharged to 80% capacity.

What are the optimal operating temperatures for the EcoFlow DELTA 2 Max Smart Extra Battery?

The optimal operating temperature range for the EcoFlow DELTA 2 Max Smart Extra Battery is between +20 u00b0C to +30 u00b0C. It can discharge in temperatures from -10 u00b0C to +45 u00b0C and charge in temperatures from 0 u00b0C to +45 u00b0C.

What type of battery technology does the EcoFlow DELTA 2 Max Smart Extra Battery use?

The EcoFlow DELTA 2 Max Smart Extra Battery utilizes Lithium Iron Phosphate (LFP) battery technology, known for its safety and longevity.

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Ecoflow Delta 2 Max Smart Extra Battery – 2048 Wh

1,099.00 €

2048 Wh lithium battery (LFP)
Doubles / triples the capacity of the EcoFlow DELTA Max to 4096 / 6144 Wh
LCD charge status display with all parameters
Connection cable: 1 m

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SKU: 305-21602 Categories: All, Batteries, Electricity Tags: battery capacity, ecoflow, expansion battery, extra battery pack, lifepo4 battery, portable power station, solar generator, yellystone outdoors

Description

Overview

The EcoFlow DELTA 2 Max Smart Extra Battery 2048 Wh is designed to expand your portable power setup when you need longer runtime and more flexibility. Connected to the DELTA 2 Max, it doubles the system capacity from 2048 Wh to 4096 Wh, making it a practical choice for camping, off-grid applications, and backup power needs.

Built with lithium iron phosphate (LFP) battery technology, this extra battery offers a reliable balance of capacity, durability, and everyday usability. It cannot be used on its own and is intended to work with compatible EcoFlow devices, including the DELTA 2 Max, for a scalable off-grid power supply.

Key benefits

Expands the capacity of your EcoFlow DELTA 2 Max system
Provides 2048 Wh of additional battery capacity
Supports camping, travel, and off-grid power use
Uses LFP battery technology for long cycle life
Designed as a smart extra battery for compatible EcoFlow systems

How the smart extra battery works

The EcoFlow DELTA 2 Max Smart Extra Battery connects directly to a compatible EcoFlow power station. Once paired, it increases total available capacity and helps extend operating time for devices, appliances, and essential equipment.

One DELTA 2 Max can support up to two smart extra batteries, bringing the total system capacity to up to 6144 Wh. This makes it useful for users who want a more flexible portable power solution without replacing their main unit.

Compatible EcoFlow systems

This smart extra battery is not a standalone power source. It can only be used and charged together with compatible EcoFlow products, including:

EcoFlow DELTA 2
EcoFlow DELTA Max 2000
EcoFlow DELTA 2 Max
PowerStream balcony power plant

Fast charging support

EcoFlow’s X-Stream charging technology is designed for fast recharging when paired with the right system. According to the product information, the DELTA Max platform can reach 80% in 1 hour and 100% in 1.6 hours. This helps reduce downtime and keeps your portable power solution ready for use more quickly.

Technical specifications

Battery type: Lithium Iron Phosphate (LFP)
Capacity: 2048 Wh (51.2 V, 40 Ah)
Cycle life: approx. 3000+ cycles to 80%
Extra battery input: 51.2 V
Extra battery output: 51.2 V
Optimal operating temperature: +20 °C to +30 °C
Discharge temperature: -10 °C to +45 °C
Charging temperature: 0 °C to +45 °C
Weight: approx. 19 kg
Dimensions: 464 mm × 235 mm × 283 mm

Who this battery is suitable for

This extra battery is a strong fit for customers looking for more runtime in a portable power setup. It may be especially relevant for camping power use, off-grid power supply, and backup energy storage where system expansion matters.

If you already use a compatible EcoFlow unit and need more capacity, the EcoFlow DELTA 2 Max Smart Extra Battery 2048 Wh is a practical way to extend performance without changing your core system.

FAQ

Can the EcoFlow DELTA 2 Max Smart Extra Battery be used on its own?

No. It is designed to work only with compatible EcoFlow systems and cannot be used independently as a standalone battery.

How much capacity does it add?

It adds 2048 Wh of capacity. When connected to the DELTA 2 Max, total capacity increases from 2048 Wh to 4096 Wh.

Can more than one extra battery be connected?

Yes. One DELTA 2 Max can support up to two smart extra batteries, for a total capacity of up to 6144 Wh.

What battery technology does it use?

It uses Lithium Iron Phosphate (LFP) battery technology.

Is this battery suitable for camping and off-grid use?

Yes. It is designed to support portable power solutions, including camping and off-grid applications, when used with compatible EcoFlow devices.

What are the charging temperature limits?

The charging temperature range is 0 °C to +45 °C.

Additional information

Weight	19 kg
Dimensions	46.4 × 23.5 × 28.35 cm

About brand

EcoFlow at Yellystone Outdoors brings together a powerful and versatile collection of portable energy products designed for people who need dependable electricity wherever life takes them. Whether you are planning a camping trip, setting up a caravan, living the van life, travelling in an RV, heading off-road, enjoying boating adventures or preparing for emergency backup power at home, EcoFlow offers smart and efficient power solutions built for modern outdoor and mobile lifestyles. From compact charging accessories to high-capacity power systems, the EcoFlow range is ideal for customers looking for reliable, portable and future-ready energy equipment. The EcoFlow collection at Yellystone Outdoors includes a wide variety of portable power stations, solar panels, smart batteries, extra batteries, charging accessories, power cables, adapters and complete off-grid power solutions. Customers can explore products such as the EcoFlow 240W USB-C to USB-C Nylon Cable, 240W USB-C Cable, 100W Flexible Solar Panel, 100W Rigid Solar Panel, 110W Foldable Solar Panel, 175W Rigid Solar Panel, 2x130W RVMAX Rigid Solar Panel Combo, 400W Foldable Solar Panel, 400W Lightweight Portable Solar Panel, 400W Rigid Solar Panel, 45W Type-C Foldable Solar Panel, 60W Type-C Foldable Solar Panel, AC Cold-Device Power Cable for DELTA and RIVER, Alternator Charger 800W and Alternator Charger Custom Cable. These products are supported by a broader EcoFlow range that also includes prepared kits, Power Hub systems, Glacier plug-in batteries, RIVER series power stations, DELTA series backup power options, smart charging devices and essential accessories for portable and off-grid energy use. For outdoor enthusiasts, EcoFlow products offer practical power for lighting, portable fridges, cooking equipment, laptops, mobile devices, drones, cameras and other camping or travel essentials. For caravan, RV and van life users, EcoFlow makes it easier to build a flexible power setup that supports life on the road with efficient charging, solar input and expandable battery options. Boaters and marine users can also benefit from portable and lightweight energy systems that help power important devices while staying mobile and efficient. At the same time, homeowners looking for emergency backup power can use EcoFlow products as a convenient and cleaner alternative for short-term energy support during outages or unexpected disruptions. One of the biggest advantages of the EcoFlow range is its mix of portability, innovation and ease of use. Foldable solar panels are ideal for travellers who want lightweight solar charging on the go, while rigid solar panels and flexible solar panels offer more options for fixed or semi-fixed setups. Portable power stations and smart batteries provide convenient energy storage for both short adventures and extended off-grid use. Charging cables, alternator chargers and EV charging accessories help users create a more complete and efficient ecosystem, making EcoFlow a trusted choice for people who want clean energy products that work across a wide range of situations. Yellystone Outdoors is a strong destination for EcoFlow portable power, foldable solar panels, rigid solar panels, flexible solar panels, solar generators, battery storage, smart charging accessories, camping power solutions and off-grid electricity gear. The EcoFlow brand range is well suited to customers searching for high-performance portable power stations, solar charging systems, RV power solutions, van life energy products, camping solar panels, extra batteries, emergency power backup equipment and outdoor electricity accessories. By offering a broad selection of EcoFlow products in one place, Yellystone Outdoors helps customers compare, choose and invest in dependable energy solutions for travel, recreation, work and backup power needs.

Ecoflow Delta 2 Max Smart Extra Battery – 2048 Wh