River 3 Max (RIVER 3 Plus + EB300)

  
By EcoFlow

Delivery available

EcoFlow RIVER 3 Max 

The EcoFlow RIVER 3 Max is a powerful, portable energy solution designed to provide off-grid power and emergency backup. This bundle includes the RIVER 3 Max and the B300 expansion battery, giving you a total capacity of 572Wh.

Ideal for home backup, RV travel, or outdoor adventures, EcoFlow’s RIVER 3 series delivers efficient, quiet, and flexible energy with no fumes or fuel needed. Enjoy advanced battery technology, multiple output ports, and fast recharging options in one compact system.

Product Highlights

  • Rated output up to 600W with X-Boost technology; surge capacity of 1200W to power 90% of household appliances.
  • X-GaN Power technology improves efficiency and reduces noise in a more compact build.
  • 3000+ battery cycles (LFP chemistry) for a decade of reliable use at 80% capacity.
  • Built-in Battery Management System (BMS) with protections for voltage, temperature, and current.
  • Recharges via wall socket (1.5 hrs), 12V car socket, solar panel, or generator for maximum flexibility.
  • Lightweight 8 kg design for mobility and convenience.
  • Emergency-ready: powers devices like CPAPs, routers, aquariums, and more during outages.

Key Features of the EB300 Battery

  • Expands RIVER 3 Max capacity to 286Wh for longer runtime.
  • Simple wireless connection via pogo pin system—no cables or screws required.
  • Smart battery syncing ensures balanced charging and discharging across both units.

Specifications

Category Details
Product Name RIVER 3 Max
Capacity 572Wh / 179,200mAh
Dimensions 234 × 224 × 255 mm (9.2 × 8.8 × 10 in)
Net Weight 8 kg (17.7 lb)
Battery Chemistry LFP (LiFePO4)
Cycle Life 3000 Cycles to 80% Capacity
AC Output 3 × 230V~50Hz, 600W Max (Surge 1200W, X-Boost 1200W)
USB-A Output 2 × 5V⎓2.4A, 12W Per Port, Total 24W
USB-C Output
Car Output 1 × 12.6V, 10A, 126W Max
Wireless ✖️
AC Recharge 200–240V, 3A Max, 50/60Hz, 650W (0–100% in 1.5 Hr)
Solar Recharge 11–55V, 13A, 220W Max
0–100% in 3.2 Hr
(45W: 15.6 Hr) • (60W: 11.7 Hr) • (110W: 6.4 Hr)
Generator Recharge 200–240V, 3A Max, 50/60Hz, 650W (0–100% in 1.5 Hr)
USB-C Recharge 5V–28V⎓ up to 140W Max (0–100% in 7 Hr)
UPS <10 ms
Expansion Battery (EB) B300 (286Wh)
App Connectivity Wi-Fi & Bluetooth
Noise 30 dB
Waterproof Rating IP54 (battery pack only)
Warranty 5 Years

Environment and Usage Conditions

  • Optimal Operating Temperature: 20℃–30℃ (68℉–86℉)
  • Charge Temperature: 0℃–45℃ (32℉–113℉)
  • Discharge Temperature: -10℃–45℃ (14℉–113℉)
  • Storage Temperature: 20℃–30℃ (68℉–86℉)
  • Operating Altitude: ≤2000 m

What's in the Box

  • RIVER 3 Max
  • AC Charging Cable
  • Car Charging Cable
  • USB-B to USB-A UPS Communication Cable
  • Quick Start Guide and Warranty