Home emergency power DELTA Max expands up to 6kWh with smart extra batteries, keeping your home powered on in any emergency.
Power multiple devices Looking for something to power heavy-duty devices like your fridge and dryer? With X-Boost, DELTA Max handles devices up to 3400W with ease.
Portable solar generator Stay powered on no matter what. DELTA Max connects with up to 2x 400W EcoFlow solar panels to deliver 800W Max solar charging speeds.
Backup your home during power outages with DELTA Max. With an expandable capacity that reaches up to 6kWh, dual charging, and the ability to power your home devices, you can stay powered on in any situation.
Power Multiple Devices
800W max Solar Input
Expandable home backup power.
A single DELTA Max unit packs a 2kWh capacity that is expandable up to 6kWh with DELTA Max smart extra batteries. This means when a blackout hits, you can continue to power your important home devices such as your fridge and lights for hours on end.
Convenient and fast dual charging.
DELTA Max charges up safely and rapidly from 0-80% in just 65 minutes. And it gets even better. If you’re looking for an even faster way to charge up DELTA Max, you can combine AC with the smart generator to get up to 3400W, AC with solar to get up to 2600W, or the Smart Generator with solar to get up to 2600W.*
Power 99% of your home devices.
With EcoFlow’s X-Boost technology, DELTA Max can power heavy-duty devices up to 3400W. That means during a power outage or blackout, you can continue to power your fridge, dryer, and more. That’s the industry gold standard for a portable power station of this size and capacity.
Harness the power of the sun.
DELTA Max connects with up to 2x 400W EcoFlow solar panels to deliver 800W Max solar charging speeds. With a voltage range from 11-100V and the Solar connector, you can also connect other solar panels to your DELTA Max. Even during cold or cloudy days, our smart maximum power point tracking (MPPT) algorithm automatically detects voltage and current in real time to give you optimum solar generation throughout the day.
Emergency backup power.
Disasters can occur at any time of the year, sometimes lasting longer than we ever expected. When extended blackouts hit, the EcoFlow Smart Generator serves as an emergency option that integrates with DELTA Max. It auto-starts when your DELTA Max hits a low level of charge, recharges your DELTA Max, and stops the engine all by itself once your DELTA Max hits a full charge. This gives you a reliable emergency backup option that relies on minimum use of a generator.
Control, monitor, and manage your energy use.
Control and monitor your DELTA Max with the EcoFlow app. Dive into the settings to customize your power use or control DELTA Max remotely.
Multiple ways to charge.
“ Solar Charging”
“ AC Charging”
“ Smart Generator”
“ Car Charging”
What's in the bundle - DELTA Max
1.DELTA Max 2.AC Charging Cable 3.Car Charging Cable 4.DC5521 to DC5525 cable 5.User Manual
Frequently Asked Questions
Specs of DELTA Max
6 outlets, 2400W total (Surge 5000W)
2 ports, 5V, 2.4A, 12W Max per port
2 ports, 5/9/12/15/20V, 5A, 100W Max per port
2 ports, 12.6V, 3A, 38W Max per port
Solar Charging Input
800W Max, 11-100V, 13A
Support up to two DELTA Max Smart Extra Battery/Smart Generator
Max Device(s) Power Supported by X-Boost
USB-A Fast Charge
2 ports, 5V, 2.4A / 9V, 2A / 12V, 1.5A, 18W Max per port
Car Power Output
12.6V, 10A, 126W Max
AC Charging Input
1800W Max, 15A
Car Charging Input
Support 12V/24V battery, 8A
800 cycles to 80% capacity
Specs of 160W Solar Panel
61.8 × 26.8 × 1.0 in (158 × 51.4 × 2.4 cm)
16.5 × 26.8 × 1.0 in (42 × 51.4 × 2.4 cm)
15.4 lb (Solar Panel 11 lb)
Open Circuit Voltage
21.4V (Vmp 18.2V)
Short Circuit Current
9.6A (Imp 8.8A)
Operating & Storage Temperature
−4°F to 185°F