Skip to content
by EcoFlow

EcoFlow RIVER 3 Plus Smart Extra Battery

EcoFlow RIVER 3 Plus Smart Extra Battery

SKU EFEB300
Save $62.99 Save $30.99
Original price $239.99
Original price $239.99 - Original price $480.99
Original price $239.99
Current price $209.00
$209.00 - $418.00
Current price $209.00
Availability:
in stock, ready to be shipped
Availability:
in stock, ready to be shipped

Free Shipping

Every Off Grid Stores Product Ships For Free

No Sales Tax Many States

We Charge Sales Tax Only In AZ, CA, CO, FL, GA, MI, NC, NV, OH, PA, TN, TX, VA, WA, and WI

Authorized Dealer

We are authorized dealers of every brand on our website

5-Year Warranty

Off Grid Stores is an authorized retailer of EcoFlow products. Because of this, we pass on EcoFlow's manufacturer warranty to you.

Product Highlights
  • Expand the capacity of the RIVER 3 Plus to up to 858Wh.
  • Choose from two extra battery models to fit your needs: EB300 (286Wh) or EB600 (572Wh).
  • An additional 140W of USB-C input and output option.
  • Enjoy a wireless Pogo Pin connection—no cables or screws required.
  • Reduce your load by using the Extra Battery independently.
Why Buy From Us?

- Help Support Small Family Owned Business

- Our Team Has Actual Knowledge Of Our Products

- You Will Talk To A Real Person In The USA When You Call

- We Guarantee To Match The Lowest Prices On The Internet

- Our Items Are Located In The USA

- We Actually Live Off-Grid Unlike Some Of Our Competitors

Best Price Guarantee

Shop with confidence, as we guarantee the best prices available.

If you come across an item at a lower price on a competitor's website, we'll gladly match it.

Simply contact our customer service chat before purchasing to redeem this exclusive offer.

Learn more by visiting our Best Price Guarantee page here.

Shipping & Handling Policy

We provide Free Shipping to the continental 48 United States only.

International shipping, as well as shipping to Alaska, Hawaii, US Protectorates, P.O. Boxes, APO, FPO, or DPO addresses, is NOT available.

Orders are typically processed and shipped from our warehouse within 1-3 Business Days (excluding weekends and holidays).

After leaving our warehouse, the expected delivery time is 3-4 Business Days, resulting in an average total shipping and handling time of 4-7 Business Days.

Learn more about our Shipping & Handling Policy here.

Returns & Refunds

While shopping at Off Grid Stores know that returns are a breeze! If you are not completely satisfied with your purchase, for any reason, you may return it to us within 30 Days of delivery for a refund.

If you would like to open up a return you can send us an email to support@offgridstores.com with your name, order number, and reason for return.

To learn more about our Returns & Refunds Policy you can do so here.

EcoFlow RIVER 3 Plus Smart Extra Battery

EcoFlow RIVER 3 Plus Smart Extra Battery

Expandable up to 858Wh with 2 Extra batteries options

Adjust capacity for growing energy needs

Level up your RIVER 3 Plus with an Extra Battery. Choose either the EB300 (286Wh) or the EB600 (572Wh), and simply stack one at a time to achieve up to 858Wh of pure energy.

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.

 

Specifications:

EcoFlow RIVER 3 Plus 300 Smart Extra Battery
Net Weight 7.72 lbs
Dimensions (W×D×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 INFO
Rated Voltage 22.4⎓
Rated Capacity 286Wh 12.8Ah
Cell Chemistry LFP (LiFePO4)
Cycle Life The battery maintains 80%+ SoH
(State of Health) after 3000 cycles
at 0.5C/0.5C at 25°C (77°F)
Protection Type Over Voltage Protection, Overload Protection,
Over Temperature Protection, Short Circuit
Protection, Low Temperature Protection,
Low Voltage Protection,Overcurrent Protection
ENVIRONMENT TEMPERATURE
Optimal Operating Temperature 68°F-86°F
Charge Temperature 32°F-113°F
Discharge Temperature 14°F-113°F
Storage Temperature 14°F-113°F (optimal: 68°F-86°F)

User Manuals & Files:

EcoFlow RIVER 3 Plus Smart Extra Battery User Manual

download
Download Now >

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)