EcoFlow RIVER 3 Plus Smart Extra Battery - Grey

This specific Smart Extra Battery (EB300) provides an additional 286Wh of capacity to your EcoFlow RIVER 3 Plus Portable Power Station.

This Smart Extra Battery is exclusively designed for and compatible with the EcoFlow RIVER 3 Plus Portable Power Station.

Yes, you can use the extra battery independently to charge devices via its integrated 140W USB-C port.

The connection is wireless via pogo pins. Simply align the main RIVER 3 Plus unit directly on top of the extra battery and gently press down until it's securely seated.

Yes, it adds one additional 140W USB-C input and output port, enhancing your charging flexibility.

When connected, this extra battery expands your RIVER 3 Plus's total capacity. If your RIVER 3 Plus has a 572Wh capacity, adding this 286Wh extra battery will give you a combined capacity of up to 858Wh.

Store it in a cool, dry place. For long-term storage, it's best to maintain a charge level between 30% and 80% and recharge it every 3-6 months to preserve battery health.

Ensure both units are powered off before connecting. Re-seat the extra battery, making sure the pogo pins are perfectly aligned and firmly connected. Check the pogo pins on both units for any obstructions or damage. If the issue persists, try connecting and disconnecting a few times.

After connecting the extra battery, allow a few moments for the RIVER 3 Plus to register the new capacity. If it doesn't update, try restarting the RIVER 3 Plus with the extra battery still connected. Ensure the battery itself has some charge.

First, ensure the extra battery has sufficient charge. Try using a different USB-C cable and a different device to rule out cable or device issues. If the port still doesn't function, ensure the extra battery is powered on (if used independently) or properly connected to the main RIVER 3 Plus unit.