Any links to online stores should be assumed to be affiliates. The company or PR agency provides all or most review samples. They have no control over my content, and I provide my honest opinion.
EcoFlow has introduced its latest line of portable power stations – the RIVER 3 Series. This new range aims to provide an accessible entry point for those new to portable power solutions, offering a blend of affordability, compact design, and robust performance.
Related Content
- EcoFlow Delta 2 Max Review
- EcoFlow Wave 2 Portable AC Review
- EcoFlow RIVER 2 MAX vs RIVER 2 Pro vs DELTA 2 Size and Feature Comparison and Review
- EcoFlow Glacier Review
- EcoFlow RIVER 2 Max Portable Power Station Review
- EcoFlow DELTA 2 Portable Power Station Review
RIVER 3 Series Overview
The RIVER 3 Series comprises three main models:
- RIVER 3
- RIVER 3 Plus
- RIVER 3 Max
- RIVER 3 Max Plus
Each model in the series is designed to cater to different power needs while maintaining a focus on portability and efficiency.
RIVER 3: The Compact Powerhouse

The base model, RIVER 3, boasts a 245Wh capacity and 300W output, with the ability to surge up to 600W using EcoFlow’s X-Boost technology. Its compact size, measuring 255 x 207 x 113 mm, makes it highly portable, comparable in size to a small projector.
Key features of the RIVER 3 include:
- Uninterruptible Power Supply (UPS) with <20ms response time
- 1-hour fast charging capability
- 110W solar charging support
- Quiet operation at <30dB
RIVER 3 Plus: Expandable Power
The RIVER 3 Plus steps up the game with a 286Wh capacity and 600W output, capable of surging to 1200W with X-Boost. This model offers expandability, allowing users to increase capacity up to 858Wh with an additional battery pack.
Notable features include:
- Faster UPS response at <10ms
- 220W solar charging capability
- Expandable capacity with extra battery options
RIVER 3 Max: With Wireless Options

The RIVER 3 Max combines the RIVER 3 Plus with a 282Wh extra battery (EB300), resulting in a total capacity of 572Wh. It maintains the 600W output and 1200W X-Boost capability of the Plus model.
Additionally, there will also be a model that includes a wireless QI charging pad.
Advanced Technology Integration
The RIVER 3 Series incorporates several advanced technologies that set it apart in the portable power station market.
GaN Technology
EcoFlow has utilised Gallium Nitride (GaN) semiconductor materials in the RIVER 3 Series, marking a first for the portable power station industry. This technology allows for higher efficiency and less heat generation, enabling a more compact design without compromising on performance.
X-GaNPower
This proprietary technology enhances energy efficiency, particularly for low-wattage devices. EcoFlow claims that the RIVER 3 can power light-duty appliances (under 100W) for up to twice as long as other 300Wh portable power stations.
X-Stream Fast Charging
The RIVER 3 Series supports four fast charging options, with AC charging capable of fully recharging the unit from 0-100% in just one hour. This rapid charging is achieved without compromising battery longevity, thanks to EV industry-inspired full-tab technology and a trickle charging mechanism after reaching 90% capacity.
X-Boost Technology
X-Boost allows the RIVER 3 Series to exceed its rated output limits, enabling support for higher-power appliances. For instance, the base RIVER 3 model can handle loads up to 600W, despite its 300W rated output.
Practical Applications
The RIVER 3 Series is positioned as a versatile power solution for various scenarios:
- Outdoor Adventures: Its compact size and portability make it suitable for camping, hiking, and other outdoor activities.
- Home Backup: With the ability to power 90% of essential home appliances, it serves as a reliable backup during power outages.
- Remote Work: The extended runtime for low-wattage devices like laptops and routers makes it ideal for remote working setups.
- Small Recreational Vehicles: Its compact size fits well in limited spaces such as small motorhomes or trailers.
Comparative Advantage
EcoFlow emphasises the RIVER 3 Series’ advantages over other 300Wh portable power stations:
| Feature | RIVER 3 | Other 300Wh Stations |
|---|---|---|
| Light (9W) Runtime | 17h | 10.3h |
| Wi-Fi Router (3W) Runtime | 30.8h | 14.7h |
| AC Charging Time | 60 min | 1.9h (1h in fast mode) |
| Solar Charging Time | 2.8h | 3.3h |
| Car Charging Time | 3h | 5h |
These comparisons highlight the efficiency gains and faster charging capabilities of the RIVER 3 Series.
Warranty and Support
EcoFlow provides a 2-year warranty for the RIVER 3 model and extends this to 5 years for the RIVER 3 Plus and Max models. This extended warranty period for the higher-end models may indicate EcoFlow’s confidence in the longevity and reliability of these units.
EcoFlow River 3 vs River 2 Specification Comparison
Looking at the EcoFlow River 3 vs River 2 specification comparison below, you will see there is practically no difference between generations. The EcoFlow River 3 is worse in some respects, as it lacks USB-C input.
The main difference is the dimensions, which are:
- EcoFlow River 3: 255 x 207 x 113 mm
- EcoFlow River 2: 245 x 214 x 142 mm
This makes the River 3 much flatter than the older model, although it is slightly longer.
Looking at the volume that gives us:
- EcoFlow River 3: 5964705 mm3
- EcoFlow River 2: 7445060 mm3
This makes the EcoFlow River 3 20% smaller in volume than the EcoFlow River 3. This isn’t something I would normally care about that much, but considering these devices are designed to be used for things like camping then any space you can save is always a huge bonus.
| Specification | River 3 | River 2 |
|---|---|---|
| Capacity | 245Wh/76800mAh | 256Wh |
| Cell Chemistry | LFP (LiFePO4) | LFP |
| Cycle Life | 3000 cycles to 80% capacity | 80%+ capacity after 3000 cycles |
| Discharge Temperature | -10°C to 45°C | -10°C to 45°C |
| Charge Temperature | 0°C to 45°C | 0°C to 45°C |
| Optimal Operating Temperature | 20°C to 30°C | 20°C to 30°C |
| Storage Temperature | -10°C to 45°C (20°C to 30°C is best) | -10°C to 45°C (20°C to 30°C is best) |
| AC Input | 200~240V, 3A Max, 50/60Hz, 300W | 220-240V 50Hz/60Hz, 360W Max |
| Solar Input | 11-30V, 8A, 110W Max | 11-30V, 8A, 110W Max |
| Car Input | 11~55V, 8A Max, 100W Max | 12V/24V, 8A, 100W Max |
| USB-C Input/Output | No USB-C Input 1 port, 5/9/12/15/20V⎓5A, 100W Max per port | 5/9/12/15/20V, 3A, 60W Max |
| Car DC Output | 1 port, 12.6V, 10A, 126W Max | 12.6V, 8A, 100W Max |
| USB-A Output | 2 ports, 5V⎓2.4A, 12W Max per port, total 24W | 5V, 2.4A, 12W Max |
| AC Output | 1 ports, 230V~50Hz, 300W total (Surge 600W, X-Boost 600W) | Pure Sine Wave, 300W total (surge 600W), 230V 50Hz/60Hz |
| App Control | Wi-Fi &Bluetooth | Wi-Fi, Bluetooth |
| AC Charging Time | 0~100% in 60 min | 0-80% in 48 minutes, 0-100% in 60 minutes (360W Max) |
| Car Charging Time | 0-100% in 2.8 hr | 3 hours |
| USB-C Charging Time | N/A | 6 hours |
| Solar Charging Time | 0-100% in 2.6 hr (45W input 0-100% in 6.3 hrs) (60W input 0-100% in 4.7 hrs) | 2.5 hours |
| Net Weight | 3.5 kg/7.7 lb | Approximately 3.5kg |
| Dimensions | 255 x 207 x 113 mm | 245 x 214 x 142 mm |







