SKU: 68558731004

EcoFlow RIVER 3 Plus Smart Extra Battery

Sale price$143.55 Regular price$159.50
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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24

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Description

EcoFlow RIVER 3 Plus Smart Extra BatteryBoost the performance and runtime of your EcoFlow RIVER 3 Plus with this Smart Extra Battery. Designed for seamless expansion, it offers you the flexibility to increase total capacity to as much as 858Wh by choosing the EB300 (286Wh) or EB600 (572Wh) option. The advanced design supports an additional 140W USB C input output, ensuring faster charging and versatile connectivity. Adds an extra charging and recharging option More possibilities, more

Boost the performance and runtime of your EcoFlow RIVER 3 Plus with this Smart Extra Battery. Designed for seamless expansion, it offers you the flexibility to increase total capacity to as much as 858Wh by choosing the EB300 (286Wh) or EB600 (572Wh) option. The advanced design supports an additional 140W USB-C input/output, ensuring faster charging and versatile connectivity.

Adds an extra charging and recharging option

More possibilities, more flexibility

Looking to charge more devices or conveniently power your RIVER 3 Plus via USB-C? Adding this extra battery expands its capacity and significantly enhances its versatility with an extra 140W USB-C port, offering the RIVER 3 Plus a new charging and recharging option. With the USB-C port, the Extra Battery also provides the freedom to use it independently.

Hassle-free connection

Plug-and-play within seconds

Utilizing Pogo Pin tech, the batteries connect wirelessly, fastening easily with clips instead of cables or screws.

Lightweight at only 7.7 lb

Use the extra battery independently to lighten your load

Weighing just 7.7 lb, the EB300 is lighter than the RIVER 3 Plus. It is lightweight, with a compact design and USB-C input and output port, making the extra battery highly convenient for on-the-go use. The Extra Battery offers the perfect solution for short outdoor trips with minimal devices to expand your possibilities.

10-year lifespan with an LFP battery

A one-time investment that lasts for 10 years

The Extra Battery features the same LPF battery technology and offers a 5-year warranty, just like the RIVER 3 Plus. This ensures worry-free usage for up to 10 years, giving you peace of mind and long-lasting performance.

Features

  • Expand your RIVER 3 Plus power capacity up to a maximum of 858Wh
  • Select between EB300 (286Wh) or EB600 (572Wh) models to suit different power demands
  • Includes an extra 140W USB-C input/output port for fast and flexible charging
  • Quick Pogo Pin wireless docking—no tools, screws, or cables needed
  • Can function independently for reduced weight and increased portability

Specifications

General

  • Net Weight: 7.72 lbs
  • Dimensions (W x— D x— H): 9.21 in x— 8.82 in x— 4.33 in

Output

  • USB-C Port: 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max
  • Extra Battery Port: 17.5V-25.5V⎓33A Max

Input

  • USB-C Port: 5V/9V/12V/15V⎓3A Max, 20V/28V⎓5A Max, 140W Max
  • Extra Battery Port: 17.5V-25.5V⎓14A Max

Battery Details

  • Rated Voltage: 22.4⎓
  • Rated Capacity: 286Wh 12.8Ah
  • Cell Chemistry: LFP (LiFePO4)
  • Cycle Life: Maintains 80%+ State of Health after 3000 cycles at 0.5C/0.5C at 25°C (77°F)
  • Safety Protections: Over Voltage, Overload, Over Temperature, Short Circuit, Low Temperature, Low Voltage, and Overcurrent Protection

Environmental Conditions

  • Optimal Operating Temperature: 68°F - 86°F

  • Charging Temperature: 32°F - 113°F

  • Discharging Temperature: 14°F - 113°F

  • Storage Temperature: 14°F - 113°F (Optimal: 68°F - 86°F)

Warranty

Energy Systems Central Stores is an authorized retailer of EcoFlow products. Because of this, we pass on EcoFlow's manufacturer 5-Year warranty to you.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 68558731004

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4.5 ★★★★★
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Verified Purchase
Margaret
Alexandria, US
★★★★★ 5
Great hose
Size: 50ft, Color: Black
I love this hose, I have one from years ago wearing out. This is a different quality, so will last longer. It is very lightweight when it detracts and easy to put away in the hose bowl. I also like the fact it came with a nice nozzle. Will purchase another one that is longer after my green house is built.
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Reviewed in the United States on May 16, 2026
L
Verified Purchase
Lulu McGillicuddy
Lake Worth, US
★★★★★ 4
Easy to use for older folks - and FUN.....???
Size: 100ft, Color: Black
Love the light weight. I can turn the spigot just a bit and the hose will grow in length as i walk around to the front of my house. It's just enough to get a good drenching without knocking my plants around. However, the nylon covering snags easily, and I can see that I may need to replace the hose quicker than I had hoped. I'll probably get the same brand of i have to do so. The sprayer is decent quality, and its multi-functions are handy. I kind of like watching it shrink as I empty it and wrap it up. Never thought a garden hose would actually add a little fun to the chore!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
C
Verified Purchase
Clutter Hater
Lowell, US
★★★★★ 5
Nice, light hose with nozzle
Size: 25ft, Color: Black
Nice short expandable hose. I had a longer expandable one which got a big leak. So I bought this shorter one since I only use it to water the plants on the patio. So far, it works great; but people have to know that short means short. The nozzle fits this hose; my other nozzle is too big. So having the short hose and the right nozzle in one package works for me.
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Reviewed in the United States on June 7, 2026
S
Verified Purchase
Susanhapa
Natrona Heights, US
★★★★★ 5
Love this light weight flexi hose!
Size: 50ft, Color: Black
Great hose. This is my third because the only downside is that the area connected to the spigot can crimp and ultimately leak. It’s easy to keep that from happening if you are the only one using the hose. But if others, like your kids or a garden helper use the hose, they don’t always recognize that.
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Reviewed in the United States on May 21, 2026
T
Verified Purchase
terrorized-by-grumpycat
Massapequa, US
★★★★★ 4
Weak but excellent please read.
Size: 50ft, Color: Black
Breaks a lot, but Is 100% convenient. My third annual purchase. Beats rubbing stuff off of twisted rubber hoses. Darned if u do. Darned if u don't. A 5-10 yr version one of these will outsell the entire market.
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Reviewed in the United States on May 21, 2026

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