EcoFlow Power Station River 3 Plus + EB300 is a modular portable energy system designed for users who need extended capacity, reliable AC output, and flexible charging options.
RIVER 3 Plus provides fast AC power, high-speed USB-C output, and multiple charging methods, while the EB300 Extra Battery expands total storage for longer runtimes during outdoor work, travel, or home backup demand. The combination offers a lightweight yet powerful solution built for extended off-grid use with fast recharging, durable LFP battery chemistry, and smart energy management through the EcoFlow app.
• Battery capacity: 512Wh
• AC output: 300W (600W surge)
• USB-C output: 45W
• USB-A outputs: 2 × 12W
• DC car port: Yes
• Solar charging: Supported
• Car charging: Supported
• AC charging: Fast recharge with X-Stream technology
• Battery chemistry: LFP (LiFePO₄)
• Cycle life: 3000+ cycles to 80%
• Connections:
• AC outlet × 1
• USB-C × 1
• USB-A × 2
• DC car port × 1
• Smart features: EcoFlow App (Wi-Fi/Bluetooth)
• UPS function: Supported (switching < 20 ms)
• Battery capacity: 256Wh
• Battery chemistry: LFP (LiFePO₄)
• Cycle life: 3000+ cycles to 80%
• Expansion: Adds 256Wh to RIVER 3 / RIVER 3 Plus
• Connections:
• Expansion interface to RIVER 3 Series
• Total energy capacity: 512Wh + 256Wh = 768Wh
• 1× EcoFlow RIVER 3 Plus Power Station
• 1× EcoFlow EB300 Extra Battery
• 1× AC charging cable
• 1× USB-C cable
• 1× Expansion connection cable
• 1× Safety instructions
• 1× User manual
• 1× Warranty card