Power your life
The EcoFlow River 3 Max Portable Power Station (River 3 Plus + Extra Battery 300) is a compact and expandable power solution that combines the River 3 Plus base unit with the EB300 extra battery for a total capacity of 572Wh and 600W continuous AC output (1200W surge with X-Boost technology). This setup is perfect for powering laptops, routers, mini-fridges, small appliances, and other essentials during blackouts, camping, or remote work.
It supports ultra-fast recharging, reaching 100% in about 1 hour via AC wall outlet, and accepts up to 220W solar input for efficient off-grid charging. Built with durable LiFePO4 battery chemistry offering up to 3,000 cycles to 80% capacity, the system runs quietly under 30 dB and provides seamless UPS backup with less than 10 ms switchover time to protect sensitive electronics. Thanks to its simple pogo-pin stacking design for cable-free expansion, multiple output ports including three AC outlets, a 100W USB-C port, and a lightweight portable build, the River 3 Max delivers reliable, versatile power for everyday backup and outdoor adventures.
Key Features
Expandable Capacity
Combining the River 3 Plus base with the EB300 extra battery gives you a total of 572Wh capacity, providing longer runtime for laptops, routers, mini-fridges, and other essential devices during power outages or outdoor trips.
600W Output with X-Boost
It delivers a steady 600W continuous AC output through three outlets, with X-Boost technology allowing it to handle surge loads up to 1200W for powering small appliances and electronics.
Ultra-Fast 1-Hour Recharge
The power station supports rapid AC charging that reaches 100% in about 1 hour, and it accepts up to 220W solar input for fast eco-friendly recharging in optimal conditions.
Long-Lasting LiFePO4 Battery
Equipped with durable LiFePO4 chemistry, the battery offers up to 3,000 charge cycles to 80% capacity, ensuring reliable long-term performance for both daily and emergency use.
Quiet UPS Backup
Operating at under 30 dB with a seamless switch time of less than 10 milliseconds, it provides silent and instant uninterruptible power supply protection for sensitive devices like computers and routers.
What’s in the Box
- River 3 Plus
- Extra Battery 300
- Power Cord
- User Manual
FAQs
How long does it take to fully recharge the River 3 Max?
The power station supports ultra-fast AC charging that reaches 100% in about 1 hour. With up to 220W solar input, it can fully recharge in as fast as 1.5 to 2 hours under good sunlight conditions.
Can the extra battery (EB300) be used separately?
Yes, the EB300 extra battery can operate independently. It features its own USB-C output port (up to 140W) and can be charged or used on its own without being stacked on the main unit.
How does the UPS backup work on this model?
It offers seamless uninterruptible power supply with a switch time of less than 10 milliseconds, instantly transferring to battery power during outages to protect sensitive electronics like computers and routers without interruption.
What is the maximum runtime for common devices?
Runtime varies by load—for example, a 3W Wi-Fi router can run for over 100 hours on the full 572Wh capacity, while higher-draw devices like a mini-fridge or laptop will have shorter runtimes depending on their power consumption.
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