EcoFlow RIVER 3 Plus Smart Extra Battery
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Double or even TRIPLE the power of your RIVER 3 Plus Power Station with the EcoFlow RIVER 3 Plus Smart Extra Battery. This versatile accessory enhances the functionality of your EcoFlow RIVER 3 Plus, allowing you to customize your power capacity and improve your device’s usability. Whether you're camping, working remotely, or preparing for emergencies, this smart extra battery ensures you're never left without reliable energy.
With two options—EB300 (286Wh) or EB600 (572Wh)—you can stack up to 858Wh of capacity to meet your specific energy needs. Lightweight, durable, and packed with innovative features, the RIVER 3 Plus Smart Extra Battery is your ultimate portable power companion.
Whether you're gearing up for an outdoor adventure or preparing your home’s emergency backup power, the EcoFlow RIVER 3 Plus Smart Extra Battery is your go-to solution for flexible, reliable, and portable power.

Choose between two battery models to customize your energy storage. Achieve up to 858Wh by stacking the EB300 or EB600, adapting effortlessly to your power requirements.
Add a 140W USB-C input/output port for enhanced versatility. Charge your devices or recharge the extra battery independently, ensuring you're always powered up.
Thanks to Pogo Pin technology, connecting the extra battery to your RIVER 3 Plus is effortless. Forget about cables or screws—just snap it into place and enjoy instant energy expansion.
The EB300 model weighs only 7.7 lbs, while the EB600 offers greater capacity at 12.8 lbs. Both models are compact and easy to transport, perfect for life on the move.
With a 10-year lifespan and 3000 cycles to 80% capacity, this extra battery ensures reliability and durability for years to come.
EcoFlow provides a limited warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.
*No cables required. Connects directly to the RIVER 3 Plus via built-in pogo-pin contacts when stacked.

Extra Battery 300 Specifications |
||
| Capacity | 286Wh | |
| Dimensions | 9.2 x 8.8 x 4.3 in | |
| Net Weight | 7.7 lb | |
| Battery Chemistry | LiFePO4, 3000 cycles to 80% capacity | |
|---|---|---|
| USB-C Output | 1 port, 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max | |
| USB-C Input | 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max | |
Extra Battery 600 Specifications |
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| Capacity | 572Wh | |
| Dimensions | 9.2 x 8.8 x 6.2 in | |
| Net Weight | 12.8 lb> | |
| Battery Chemistry | LiFePO4, 3000 cycles to 80% capacity | |
| USB-C Output | 1 port, 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max | |
| USB-C Input | 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max | |
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