The terms “DELTA” and “RIVER” as mentioned on this page refer to products exclusively manufactured by ECOFLOW INC.
Power. Never Been This Easy
Charge 0-100% in 1 Hour
Fastest charging speeds ever.
RIVER 2 Max beats the industry charging speed standard, fully charging in only 60 minutes. That’s 5x faster than other portable power stations on the market and 38% quicker than previous generations. Fully charge RIVER 2 Max while you pack your bags, so you’ll always be ready for a last-minute trip.
LiFePO4 Battery Chemistry
Safe, for up to 10 years of use.
With upgraded long-lasting LFP battery chemistry at its core, charge and empty RIVER 2 Series over 3000 times. That’s pretty much 10 years of everyday use [1] and 6x longer than the industry average. With LFP cells, RIVER 2 Series is safe, durable, and highly efficient, even in warm temperatures.
5-year Warranty
With one of the most extended warranties in the industry, we go the extra mile to give you peace of mind.
Smart Battery Protection System
Our state-of-the-art Battery Management System (BMS) constantly monitors the voltage, current, and temperature of RIVER 2 Series with multiple aspects of protection, extending its life to the max.[2]
4 Ways to Charge
Charge anywhere.
With 4 different ways to top up the RIVER 2 Series, there’s a recharge option no matter what.3From fast AC to in-car charging when you’re on the go.
AC Charging
Car Charging
Solar Charging
USB-C Charging
Why not harness renewable energy while you camp or head off on a trip? Plug in a couple of portable solar panels to fully recharge off-grid in as fast as 3 hours.
X-Boost Up to 1000W
Small size. Big power.
RIVER 2 Max has an AC output of up to 500W. Need to power a vacuum cleaner or sandwich maker? Crank it up to 1000W with X-Boost mode to run up to 80% of high-wattage appliances.
Lightweight at only 6 kg
With a compact portable design, taking travel-friendly power off-grid has never been this easy. With a light-weight that’s 22% lighter than the previous generation, RIVER 2 Max is ready to power all your outdoorsy escapades, from boondocking to BBQs at the beach.
Stay in Charge with Smart Power
Monitor, control, and customize your power usage intelligently with the EcoFlow app.
Monitor
View battery status live anytime, anywhere.
Control
Easily turn on/off output and the connected appliances remotely.
Customize
By tuning the charging speed to suit various charging environments, it's safe to use, preventing overloading and prolonging its lifespan.
Customize
When the power's down, AC Always-On ensures a seamless transition from the grid to backup power and unwavering protection of your fridge and other mission-critical appliances.
Constant Updates
Regular upgrades to offer you industry-leading energy management.
Power. Anywhere. Anytime.
What's in the box
1. RIVER 2 Max 2. AC Charging Cable 3. Car Charging Cable 4. DC5521 Connection Cable 5. Quick Start Guide
Specs
Capacity
512Wh
Net Weight
Approximately 6kg
Dimensions
270 x 260 x 196mm
AC Input
220-240V~ 50Hz/60Hz, 660W Max
Solar Input
11-50V 13A, 220W Max
Car Input
12V/24V, 8A, 100W Max
USB-C Input/Output
5/9/12/15/20V, 5A, 100W Max
DC Output
12.6V, 10A/3A/3A, 126W Max
Cell Chemistry
LFP
Cycle Life
80%+ capacity after 3000 cycles
Discharge Temperature
-10°C to 45°C
Charge Temperature
0°C to 45°C
Optimal Operating Temperature
20°C to 30°C
Storage Temperature
-10°C to 45°C (20°C to 30°C is best)
DC5521 Output
12.6V, 3A, 36W Max
App Control
Wi-Fi, Bluetooth
1. Using RIVER 2 Max six times a week, 3000 full 100% cycles will last 9.6 years until it drops to 80%.
2. BMS includes over-voltage, overloading, over-temperature, short circuit, low-temperature, low voltage, and overcurrent.
3. When charging and discharging at high wattage, RIVER 2 Max may make a noise up to 62db.