Home · Backup power
EcoFlow RIVER 3 Plus Portable Power Station
Stored power for selected essentials
Partner checkout · EcoFlow
Buy at EcoFlow ↗Manufacturer link · Price, stock and delivery confirmed there.Why it earned a place →
Home · Power accessories
EcoFlow RIVER 3 Plus Smart Extra Battery EB300
EcoFlow
Selected by Cook CuratedPractical uses and tradeoffs, with a clear place to buy.
Why it earned a place
286Wh LiFePO4 expansion battery; 140W USB-C in/out; clips directly to RIVER3Plus.
Current retailer offerCheck price at EcoFlow
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Partner checkout. Buy directly from EcoFlow; its shipping and returns terms apply. Confirm the exact model, current price and availability there.
- Best for
- The specific power system listed below
- Material / format
- EF-RV-E01-1 / EB300 · Manufacturer specifications
- Know before buying
- Adds286Wh to RIVER3Plus for572Wh nominal combined. Only one extra battery at a time. Not a DELTA3 or Jackery expansion battery; standalone USB-C operation does not add AC sockets. Research-based selection; confirm current model, stock, price and delivery with the manufacturer.
Build a useful kit
Recommended to go with it.
Matched 286Wh expansion battery for the RIVER 3 Plus; one extra battery at a time.
Hands-free light for checking equipment and moving around during an outage.
Field · Headlamps
Black Diamond Spot 400 Headlamp — BD Graphite
Hands-free light for the camp kitchen and the go bag
Partner checkout · Amazon
Buy at Amazon ↗Paid link · Cook Curated may earn a commission at no added cost to you.Why it earned a place →Dry storage for spare layers and small preparedness essentials; not an operating enclosure.
Field · Bags
Sea to Summit Big River Dry Bag 20L — Jet Black
Keep the spare layer separate from wet gear
Partner checkout · Amazon
Buy at Amazon ↗Paid link · Cook Curated may earn a commission at no added cost to you.Why it earned a place →Selection notes
A model-specific addition to a backup-power setup.
Compare the intended use, care and limitations above with the work you need this object to do.
Knowledge before equipment
Read before you choose.
Home · Communication preparedness
Plan a GMRS network for family, friends, home and vehicles
Understand GMRS licenses, family versus friend coverage, home and car radio layouts, optional repeater access, backup power and group test checklists.
Read the guide →Home · Communication preparedness
Build a radio check-in plan for family and friends
A practical family and friend-group radio plan with licensing links, a visual network layout, printable checklists, practice drills and missed-contact steps.
Read the guide →Home · Communication preparedness
Set up CB communication between home and car
Plan a CB home base and vehicle setup with matched antennas, regulated power, backup-power checks, licensing links and a practical installation checklist.
Read the guide →