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EcoFlow RIVER Plus Extra Battery

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DOUBLE CAPACITY The Extra Battery integrates with EcoFlow RIVER Plus to double its capacity to 720Wh without doubling its weight. Attach and detach it for whatever the situation calls for.

RIVER Plus + Extra Battery = RIVER Max Plus This combination is a cost-effective way to extend your off-grid energy use. The battery management system in RIVER Plus automatically incorporates the Extra Battery, providing peak performance instantly.

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100% secure shopping
Reliable warranty
Free shipping

Stack on the power

Double RIVER Plus’ capacity by adding an extra battery underneath. Take it off when you’re traveling light.

For the right feel

Long lasting life spanTeam colors, a night light, a nice glow? This extra battery’s ambient light adds a splash of color with the EcoFlow App.

What's in the box

EcoFlow RIVER Plus Extra Battery X 1; Long Screws X 4; Cross Screw Driver X 1; User Manual X 1

Frequently Asked Questions

1. When charging, charge the one with low SOC first, then the battery itself (device) and the extra battery are charged at the same time, first balance, then charge at the same time 2. Discharge. First discharge the one with high SOC, then discharge at the same time
Remove the four screws at the bottom and connect the Smart Extra Battery. Please be noted that after connecting with a Smart Extra Battery, the product’s battery capacity becomes 720 Wh.


Net Weight

5.7 lb (2.6 kg)


11.2 × 7 × 2.3 in (28.5 × 18 × 5.9 cm)

Charge Temperature

32°F to 113°F ±5°F (0°C to 45°C ±3°C)

Discharge Temperature

−4°F to 113°F ±5°F (−20 to 45°C ±3°C)




24 months


360Wh (28.8V)

Cell Chemistry


Shelf Life

1 year (after fully charging the device)

Cycle Life

800 cycles to 80% capacity

Testing and certification

UL Standards, CE, FCC, RoHS, RCM