EcoFlow DELTA 2 Smart Extra Battery

Boost your backup power capacity with the EcoFlow DELTA 2 Smart Extra Battery. Designed to seamlessly pair with your DELTA 2 power station, it adds an additional 1,024Wh of long-lasting energy storage—ideal for home emergency use, outdoor adventures, and off-grid living. Featuring advanced LFP battery chemistry, it delivers over 3,000 charge cycles while maintaining 80% of its original capacity for up to 10 years of everyday use. With effortless plug-and-play connectivity and full monitoring through the EcoFlow app, this expansion battery offers a reliable and economical way to scale your energy system to match your needs.

Expandable Capacity

DELTA 2 expands up to 2048Wh with smart extra battery, keeping your home powered on in any emergency.

Convenient Recharging

DELTA 2 and its Extra Battery charge and discharge in unison. Recharging from portable solar panels, AC outlets, or our Smart Generator is easy.

Fast Recharging

Charge up with DELTA 2 from 0-80% in 80 minutes and 0-100% in 130 minutes with AC input.

Internal Storage Compartment

Get extra storage for accessories conveniently, saving space at home or on the go.

Power Multiple Devices

DELTA 2 fits with every port you'll ever need to power any devices anywhere, so you will always feel right.

Control from anywhere

Get all the same info about battery percent, remaining recharge time, hours left, and more on the built-in screen. You can check the battery's status anywhere from the EcoFlow app.

Double your energy storage for less cost

1kWh expandable capacity to fit your energy storage needs, ideal for home backup, RVing, outdoor adventures, and everyday use. Much more affordable, it costs up to 30% less than a power station of the same capacity.

10-year lifespan with an LFP battery

With its upgraded LFP battery chemistry, the DELTA 2 Smart Extra Battery has a lifespan of 3000 complete cycles until it reduces to 80% capacity. You'll get pretty much 10 years of power, even if you use it every day. That's 6x— longer than other power stations with a similar capacity and output.

Fast Recharging

Charge up with DELTA 2 from 0-80% in 80 minutes and 0-100% in 130 minutes with AC input.

Easy to use

There's no setup. Just plug it into your power station for more energy storage. Using the EcoFlow app, you can charge and monitor the DELTA 2 Smart Extra Battery with ease.

Stackable, space-saving design

Featuring an ergonomic, compact design, the DELTA 2 Smart Extra Batteries can be securely stacked on top of power stations and each other to save space and minimize clutter.

Features

• Expandable energy storage — Increases DELTA 2 capacity by an additional 1,024Wh for extended runtime.
• Cost-efficient high-power solution — Achieve up to 2kWh total capacity at a savings of up to 30% compared to standalone power stations of similar size.
• Durable LFP battery technology — Enjoy 3,000+ charge cycles with performance maintained at 80% after around 10 years of daily use.
• Simple connection and control — Plug-and-play setup with remote monitoring and management via the EcoFlow mobile app.

Specifications

• Net Weight: Approximately 9.5 kg (21 lbs)
• Dimensions: 15.7 in x— 8.3 in x— 11.1 in
• Battery Capacity: 1,024Wh / 51.2V

Input

• Extra Battery Port Input: 51.2V = 1,024W Max (supports X-Stream & solar dual charging)

Output

• Extra Battery Port Output: 51.2V = 2,048W Max

Battery

• Cell Type: LFP (Lithium Iron Phosphate)
• Cycle Lifespan: 3,000 cycles to 80%+ capacity
• Safety Features: Over-voltage, overload, high-temperature, short-circuit, low-temperature, low-voltage & over-current protections

Operating Conditions

• Optimal Operating: 68°F - 86°F
• Discharging: 14°F - 113°F
• Charging: 32°F - 113°F
• Storage: 14°F - 113°F (ideal 68°F - 86°F)

Warranty

Energy Systems Central Stores is an authorized retailer of EcoFlow products. Because of this, we pass on EcoFlow's manufacturer 5-Year warranty to you.