If you need your power to last longer, EcoFlow Extra Batteries are the simplest way to double or even triple your capacity without the hassle. They plug straight into your existing EcoFlow DELTA or RIVER unit, giving you the extra runtime needed to keep critical IT infrastructure and home appliances running during long outages. These smart expansion units are a lifesaver for emergency power supply needs or big off-grid projects where business connectivity just can't stop. You can even chain them together and keep an eye on everything through the app. Scale up your storage today with our fast delivery and expert advice.
The EcoFlow EFEB300 RIVER 3 Plus Smart Extra Battery offers reliable portable power wherever you need it, built with long-lasting LiFePO? technology and advanced smart connectivity. With a compact design and the flexibility to operate either as an add-on to your RIVER 3 Plus or as an independent power source, it's built for users who value both mobility and performance. Whether you're off-grid, at a job site, or preparing for unexpected outages, this unit delivers dependable energy storage in a rugged, easy-to-carry form.
Key Features
286Wh capacity with up to 3,000 charge cycles
LiFePO4 battery chemistry for durability and safety
140W USB-C port for fast, bi-directional charging
Pairs seamlessly with RIVER 3 Plus to double capacity
Compact, portable design weighing just 7.7 lbs
Can operate as a standalone USB-C power bank
Smart pogo pin connection with clip-on security
1. Main Power Button
2. Status LED
3.
USB-C Input/Output Port
4. Extra Battery Port
5. Unlock Button
Compact Build, Big Performance
Designed to deliver high-capacity energy without the bulk, the EB300 fits neatly in bags or vehicle storage spaces. Its 286Wh capacity makes it a practical choice for short trips, remote job sites, and daily charging needs.
Fast Charging, Reliable Output
Need to charge more devices or power your RIVER 3 Plus through USB-C? This Extra Battery boosts total capacity while adding a 140W USB-C port, giving the RIVER 3 Plus a new way to charge and be recharged. You can also use the battery on its own thanks to its independent USB-C output.
Standalone or Stackable Power
This battery can act independently as a USB-C hub or pair with the RIVER 3 Plus for extended output. The smart connection via pogo pins ensures a fast, efficient link, no cables required. Clips keep everything locked in place during travel or movement.
The EcoFlow DELTA Pro 3 Smart Extra Battery is a high-capacity expansion unit built for serious off-grid applications and backup systems. Engineered for those who need scalable energy access, this battery offers reliable long-term performance with advanced LFP chemistry. Whether you're supporting essential devices during outages or powering outdoor setups, this unit integrates seamlessly with the DELTA Pro 3 main system to double your available energy with minimal setup time.
Key Features
4096Wh capacity using lithium iron phosphate (LFP) cells
Up to 4000 cycles to 80% capacity for long lifespan
Plug-and-play connection to DELTA Pro 3 for easy expansion
Stackable design for compact storage and deployment
LED display with real-time battery metrics
Operates in temperatures from -10°C to 45°C
Rugged and portable at 33kg with built-in carry handles
1. Main Power Button
2. Main Power LED
3.
Status LED
4. Extra Battery Port* The Extra Battery Port on the battery is an EcoFlow proprietary port.
Expandable Energy for Demanding Scenarios
This extra battery is ideal for powering workstations, tools, or essential appliances when reliability matters. Its modular capability means you can scale your setup as needed without major hardware overhauls.
Simple, Stackable, and Smart
Designed with ease of use in mind, the battery's architecture allows vertical stacking and fast linking. The system automatically syncs when connected, so there’s no extra configuration required.
Built for Longevity and Mobility
Despite its solid build, the unit remains portable, allowing for quick redeployment in different settings. It's built to endure thousands of cycles, making it suitable for both seasonal use and daily operation.
