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 use1 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.3 From fast AC to in-car charging when you're on the go.
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| AC Charging | Car Charging | Solar Charging | USB-C Charging |
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| AC Charging | Car Charging |
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| 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 essential 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.
<30ms EPS Auto-switch
Ultra-fast home backup switchover.
With a switchover speed of less than 30ms, you won't even know the power was down. Use RIVER 2 Series as an emergency power supply for overnight outages to keep essentials running from a light to your fish tank.
EcoFlow App
Control at your fingertips.
Use the EcoFlow app to control and monitor RIVER 2 Series, even from afar. View charging levels, customize settings, and adjust charging speeds, all from the convenience of your phone.
Power. Anywhere. Anytime.
What's in the box
1. RIVER 2 Max2. AC Charging Cable3. Car Charging Cable
4. DC5521 Connection Cable5. Quick Start Guide6. 160W Solar Panel7. Solar Charging Cable
*The solar charging cable is sent together with the solar panel.
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
USB-A Output
5V, 2.4A, 12W Max
AC Output
Pure Sine Wave, 500W total (surge 1000W), 230V ~ 50Hz/60Hz
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
13.6V, 3A, 36W Max
App Control
Wi-Fi, Bluetooth
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.