*Note: The terms "DELTA" and "RIVER" as mentioned on this page refer to products exclusively manufactured by ECOFLOW INC.
Expandable capacity
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 hit a capacity of 6144wh. Ideal for home backup, caravanning, outdoors or even everyday use.
10-Year Long-lasting LFP Battery
Durable, Safe, Lightweight
With its upgraded LFP battery chemistry, DELTA 2 Max 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.
LFP Battery Chemistry
That's 6× longer than other power stations with a similar capacity and output.
Advanced BMS Protection
A built-in battery management system regulates vitals, including voltage, current, and temperature, keeping DELTA 2 Max safe, secure, and built to stand the test of time.
Protective Layers Inside and Out
With LFP cells, DELTA 2 Max is safe, durable, and highly efficient.
A rubber anti-slip base and a highly-rated UL94-5VA fire-resistant casing offer multiple layers of protection.
Robust Design
Made with a sturdy one-piece design, DELTA 2 Max is designed for the rough and tumble of portability. Each port is reinforced, protecting them against wear and tear.
Upgraded Tech, Lighter Weight
Even with its upgraded LFP battery, DELTA 2 Max is still 30% lighter than similar power stations on the market.
Run 99% of Appliances with X-Boost
Power pretty much anything with up to 3400W Output
DELTA Max powers almost all the devices you need with a large 2400W AC output. With X-Boost proprietary technology, run appliances with an output of up to 3400W. Compared with similar portable power stations, DELTA 2 Max can power more devices while also preventing overloading and overheating.
120V Home Backup: Power through outages
Power your essential appliances with a hefty 2400W AC output by connecting DELTA 2 Max (2kWh) and up to two Smart Extra Batteries (6kWh) with your home's transfer switch for partial home backup. With a plug-and-play design, it's easier than ever to prepare for blackouts.
Power for the entire family
2048Wh Capacity
A generous 2048Wh capacity makes DELTA 2 Max ideal for home backup, running your essentials for hours. Using your transfer switch, or plugged in directly, keep your fridge on and stop food from spoiling for up to 14 hours. With its lightweight design, DELTA 2 Max is portable enough to grab and go on the next camping trip.
Expandable up to 6kWh
Triple the power
Take DELTA 2 Max with you anywhere as a solo unit or connect it with two Extra Batteries for up to 6kWh of home backup.
The world's fastest 43 minute AC+solar recharge
Fuel Up 80% in Only 43 Mins*
With DELTA 2 Max's upgraded tech, combine up to 1000W solar input with AC for world-leading charging speeds. In only 43 min get an 80% charge. Or stick with AC for an 80% charge in a speedy 1.1 hour.
*When combined AC and solar input is 2400W using 1800W AC input and a maximum of 600W solar input.
Dual Solar Input System with Independent MPPT Technology
Maximize solar generation by harnessing multiple PV sources
Maximize the potential of solar energy by simultaneously utilizing multiple photovoltaic (PV) sources with our innovative dual solar input design, each with its independent Maximum Power Point Tracking (MPPT) technology. Enjoy a seamless integration of solar power into your home or business whether you have multiple solar panels or a combination of rooftop and ground-mounted installations, making the most of every ray of sunshine.
Customized In-App Energy Management
Take control of your power
Extensive 5-Year Warranty
With one of the most comprehensive warranties in the industry, we go the extra mile to give you peace of mind.
As Quiet as 30 dB
Peaceful charging
At only 30 dB, DELTA 2 Max is quieter than other 2kWh power stations on the market.
DELTA 2 Series
Expandable LFP Battery Power Solution
DELTA 2 offers capacities of 1-3kWh, while DELTA 2 Max provides energy storage from 2-6kWh. Get 10 years of daily use before hitting 80% of its original capacity. That’s down to its LiFePO4 battery chemistry, giving you 3000 full cycles for a 6× longer life.
DELTA 2 Max Specs
Capacity
2048Wh
Extra Battery
Supports up to two DELTA 2 Max Smart Extra Batteries / DELTA Max Smart Extra Battery
AC Output
6 outlets, 2400W total (Surge 4800W)
Max Device(s) Power (with X-Boost)
X-Boost 3400 W
USB-A Output
2 ports, 5V, 2.4A, 12W Max per port
USB-A Fast Charge
2 ports, 5V, 2.4A / 9V, 2A / 12V, 1.5A, 18W Max
USB-C Output
2 ports, 5/9/12/15/20V, 5A, 100W Max per port
Car Power Output
1 port, 12.6V, 10A, 126W Max
DC5521 Output
2 ports, 12.6V, 3A, 38W Max per port
AC Charging
X-stream Fast Charge 1800W, 15A
AC Input Voltage
100-120V~ max. 15A 50Hz/60Hz
Solar Charging
11-60V 15A, single port 500W; dual port 1,000W
Car Charging
Support 12V/24V battery, 8A
EcoFlow WAVE & WAVE 2 & GLACIER & Smart Generator
Supported
Battery Chemistry
LFP (LiFePO4 battery)
Cycle Life
3000 cycles to 80+% capacity
Connectivity
Wi-Fi & Bluetooth
Dimensions
497 × 242 × 305 mm /19.6 × 9.5 × 12 in
Net weight (lbs)
50 lbs
Net weight (kg)
23kg
DELTA 2 Max Smart Extra Battery Specs
Capacity
2048Wh
Input Port
51.2V, 2000W Max
Output Port
51.2V, 3200W Max
Battery
LFP chemistry, 3000 cycles to >80% capacity
Dimension
464 × 235 × 283 mm (18 × 9 × 11 in)
Weight
19kg (42lbs)
What’s in the box
Extra Battery Cable User Manual Warranty Card
Compatible with
DELTA 2 / DELTA Max 2000/ DELTA 2 Max