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 25 - Aug 30

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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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4.8 ★★★★★
Based on 25 reviews
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Product Reviews
M
Verified Purchase
Myriam I. Martinez
Louisville, US
★★★★★ 5
Good quality and durability
Color: C-Black, Size: Model C Rechargeable
It works very well very easy to use I'm very happy with my purchase
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
K
Verified Purchase
Kings Kidd
West Palm Beach, US
★★★★★ 3
It froths, but is not dependent
Color: C-Black, Size: Model C Rechargeable
While this frother does “froth”, it has many more cons than pros. The ONLY pro is it froths. The cons—only good for a traditional coffee cup. It is not water proof, and the instructions say to keep the “unit “ dry. As you froth, the liquid naturally raises height. If you are trying to use a Togo coffee mug, or thermos type travel mug—it only works well if done it three or four levels to ensure keeping the motor above the liquid. The “rechargeable “ function DOES recharge, however- it may last 1use or a few. It’s VERY inconsistent. And does not seem to be related to how long you allow it to charge. Overall—not a good buy. I had mine maybe 3 months before it quit working. And at 2 months it started becoming spastic. Even after just being charged-it wouldn’t even froth 1cup. AVOID!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
C
Verified Purchase
Carloslazaroproenza
Draper, US
★★★★★ 5
Easy to Use and Works Great
Color: C-Black, Size: Model C Rechargeable, Color: C-Black, Size: Model C Rechargeable
This milk frother works amazingly well! It’s powerful, easy to use, and creates rich, creamy foam in just seconds. The rechargeable design is very convenient, and the battery lasts a long time between charges. It feels sturdy and well-made, and cleaning it is quick and simple. I use it every day for my coffee, lattes, and hot chocolate, and it has exceeded my expectations. If you’re looking for an affordable and effective milk frother, this is definitely a great choice. Highly recommended
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026
B
Verified Purchase
Bueno lo recomiendo
San Leandro, US
★★★★★ 5
Nicec
Color: C-Stand Green, Size: Model C Rechargeable
Es de buena calidad lo recomiendo
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Reviewed in the United States on June 3, 2026
J
Verified Purchase
JESSICA DAY
Birmingham, US
★★★★★ 5
Love it!
Color: C-Black, Size: Model C Rechargeable
Love mine! No more batteries. I make at least two cups a day and froth my creamer. Love the fact I don’t have to recharge very often.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026

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