Increase the capacity of DELTA 2 Max with an extra 2048Wh.
Triple the power
2-6kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 2 Max Smart Extra Batteries to gain a capacity of 6144Wh, 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 Long-lasting LFP Battery
Durable, Safe, Lightweight
With its upgraded LFP battery chemistry, the DELTA 2 Max 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 6× longer than other power stations with a similar capacity and output.
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 Max Smart Extra Battery with ease.
Stackable, space-saving design
Featuring an ergonomic, compact design, the DELTA 2 Max Smart Extra Batteries can be securely stacked on top of power stations and each other to save space and minimize clutter.
DELTA 2 Max Smart Extra Battery Specs
51.2V, 2000W Max
51.2V, 3200W Max
LFP chemistry, 3000 cycles to >80% capacity
464 × 235 × 283 mm (18 × 9 × 11 in)
What’s in the box
Extra Battery Cable User Manual Warranty Card
DELTA 2 / DELTA Max 2000/ DELTA 2 Max
Frequently Asked Questions
Which portable power station is compatible with the DELTA 2 Max Smart Extra Battery?
DELTA 2, DELTA Max, and DELTA 2 Max are compatible with the DELTA 2 Max Smart Extra Battery.
How many extra batteries can I use with a portable power station?
DELTA 2 supports only 1 extra battery while the DELTA Max and DELTA 2 Max support up to 2.
Can I charge the extra battery without connecting to a power station?
Yes. You can use a Smart Generator to charge an extra battery even when it's not plugged into a power station. All other charging methods require it to be connected to a power station.
What makes the Smart Extra Battery "Smart"?
This battery can be monitored and controlled on the EcoFlow app.