RIVER 3 Extra Battery (EB300, 286Wh)
Compact capacity boost for RIVER 3 and RIVER 3 Plus.
EXTEND WHAT YOU'VE GOT
More runtime, better protection, easier transport. Every item below lists exactly which stations it fits.
Compact capacity boost for RIVER 3 and RIVER 3 Plus.
Bigger capacity boost, expands RIVER 3 Plus up to 858Wh total.
Protect your station on wet-weather trips.
Mount tools and gear directly to your RIVER 3 Plus.
Expand DELTA 2 up to 3kWh total capacity.
Expand DELTA 2 Max up to 6.1kWh total capacity.
1,024Wh battery for DELTA 3 and DELTA 3 Plus, expandable up to 5kWh total.
2,048Wh battery for DELTA 3 Max Plus and DELTA 3 Ultra Plus, 25% smaller than the DELTA 2 Max equivalent.
Expand DELTA Pro up to 10.8kWh with up to two batteries, ~30% more affordable than a same-capacity station.
Stack up to 12kWh for true whole-home backup. Eligible for Residential Clean Energy Credit rebates.
6,144Wh battery compatible with both DELTA Pro Ultra and DELTA Pro Ultra X inverters.
Roll your station and batteries instead of carrying them.
Purpose-built cart for the DELTA Pro Ultra's weight and stack height.
12-circuit intelligent subpanel with 20ms auto switchover. Installation required.
Command center with 32 smart circuits, under 20ms seamless backup, saves up to $6,000/year, extends backup time up to 42%.
Whole-home monitoring and control without a full panel installation.
11-inch touchscreen showing your whole home's energy flow in real time, with AI voice control.
Charge 1kWh in 2.1 hours while you drive.
Charge 1kWh in just 1.3 hours while you drive.
Keep your TRAIL station dry on fishing or kayak trips.
BUYING GUIDE
This page covers extra batteries, cables, carrying cases, chargers, carts and other accessories for EcoFlow power stations. Each listing shows the models it fits, and compatibility matters: an extra battery made for one station will not necessarily work with another.
If you occasionally need more runtime but your station's output is enough, an extra battery is usually cheaper than buying a bigger station, and it keeps the base unit portable. If you regularly need to run more devices at the same time, you need a station with higher output, because extra batteries add capacity, not power.
Cases and bags protect your station in transit and in wet weather. Solar cables and adapters connect panels to your station, so check that the connector type matches both your panel and your power station before you order. If you are not sure what fits, contact us with your model and we will point you to the right part.
Related reading: How to charge a power station · Watt-hours explained · Compare models
No. Each extra battery is made for specific models, which are listed on its product page. For example, the RIVER 3 Plus can be expanded with a compatible extra battery, and DELTA Pro stations use their own extra batteries.
If you sometimes need more runtime and the output is enough, an extra battery is the cheaper option. If you need to run more devices at once, you need a station with higher output.
Look at the Fits line on each listing or the compatible models on its product page. If you are unsure, contact us with your power station model before ordering.