EcoFlow RIVER 3 Max (Large) Power Station – 858Wh
The EcoFlow RIVER 3 Max (Large) is a high-capacity portable power station designed for longer trips, off-grid living, or reliable home backup. Combining robust 858Wh capacity with whisper-quiet operation, it is perfect for camper vans, remote work, and outdoor adventures.
Highlights
- 858Wh Total Capacity – Combines the 286Wh RIVER 3 Plus base unit with the 572Wh EB600 extra battery (included).
- 600W Output (1200W Surge with X-Boost) – Powers laptops, drones, phones, cameras, small appliances, and more.
- Fast Charging – 0 to 100% in 1.5 Hours – Quick recharge via standard wall outlet.
- Solar Charging Compatible – Compatible with EcoFlow solar panels for off-grid, renewable energy charging.
- Ultra Quiet Operation (<30 dB) – Runs silently thanks to advanced X-GaN inverter technology, ideal for quiet environments.
- Compact & Portable – Around 13.3 kg – Despite its higher capacity, still portable enough for camper vans, on-site jobs, and outdoor activities.
- Long-Lasting LiFePO4 Battery – Over 3000 full charge cycles to 80%+ capacity. Safer, more durable, and longer-lasting compared to conventional lithium-ion batteries.
- Modular Design – Easy stacking and portability with the included EB600 extra battery.
- Pro-Grade UPS (<10 ms Switchover) – Premium protection safeguarding sensitive equipment from sudden power loss.
- Smart App Control – Manage battery status, outputs, and firmware updates remotely via the EcoFlow app using Wi-Fi or Bluetooth.
- 5-Year Warranty
Specifications
- Capacity: 858Wh (RIVER 3 Plus 286Wh + EB600 572Wh)
- Battery Type: LFP (LiFePO4)
- Cycle Life: 3000 cycles to 80%+ capacity
- AC Output: 3 outlets, 600W total (Surge 1200W), X-Boost 1200W
- USB-A Output: 2 ports, 5V⎓2.4A, 12W Max per port, total 24W
- USB-C Output: 2 ports – 100W (5/9/12/15V⎓3A, 20V⎓5A) and 140W (5/9/12/15V⎓3A, 20/28V⎓5A)
- Car Power Output: 1 port, 12.6V, 10A, 126W Max
- AC Charging Input: 200~240V, 6A Max, 50/60Hz, 640W – 0~100% in 1.5 Hr
- Solar Charging Input: 11~55V, 13A Max, 220W
- Car Charging Input: 11~55V, 8A Max, 220W
- Dimensions (stacked): 23.4cm (L) x 23.2cm (W) x 23.8cm (H)
- RIVER 3 Plus: 23.4cm x 22.4cm x 15.8cm
- EB600: 23.4cm x 22.4cm x 11.0cm
- Net Weight: 13.3 kg
- Connectivity: Wi-Fi & Bluetooth
- Overcharge Protection: Yes
- Charge Indicator: Yes
- Warranty: 5 Years
What is in the Box
- EcoFlow RIVER 3 Max Plus Portable Power Station
- AC Charging Cable
- Car Charging Cable
- USB-B to USB-A UPS Communication Cable
- User Manual & Warranty Card






