The RIVER 3 Plus Extra Battery gives you the freedom to expand your power capacity and customize your energy needs with ease. It allows you to increase the RIVER 3 Plus’s total capacity to as much as 858Wh, providing significantly longer runtime for home backup, outdoor activities, or on-the-go charging.
 
You can choose between two extra battery models—EB300 (286Wh) or EB600 (572Wh)—so you can match the battery size to your specific power requirements. The Extra Battery also offers an additional 140W USB-C port for both input and output, giving you more flexibility when powering or charging your devices.
 
With its wireless Pogo Pin connection, attaching the Extra Battery is quick and effortless, requiring no cables or screws. For even greater convenience, you can also use the Extra Battery independently, reducing your load while still enjoying reliable portable power.