Portable Power Review
EcoFlow RIVER 3 Review
Best Lightweight
The EcoFlow RIVER 3 is Horizon Living's Best Lightweight portable power station pick for UK buyers. Horizon Living has not physically tested this unit. This review is based on official UK specifications, product documentation, credible independent information and verified owner feedback.
Quick verdict
A genuinely portable power station for everyday use
The EcoFlow RIVER 3 is a compact 245Wh portable power station designed for buyers who value low weight and easy portability over maximum battery capacity. With 300W rated AC output, LiFePO₄ battery chemistry, fast mains charging, solar charging support, app control and a weight of approximately 3.5kg, it is particularly well suited to camping, day trips, laptops, phones, cameras and light emergency backup.
Its biggest advantage is simple: it is small and light enough to take with you without thinking twice.
Best for
- Camping
- Day trips
- Road trips
- Laptops
- Phones and tablets
- Cameras and photography equipment
- Portable electronics
- Light emergency backup
- Buyers prioritising minimum weight and compact dimensions
Not ideal for
- Whole home backup
- High power appliances
- Extended off grid use without recharging
- Users needing approximately 1kWh or more of stored energy
Key specifications
What EcoFlow publishes
- Battery capacity
- 245Wh
- Rated AC output
- 300W
- X Boost output
- Up to 600W for compatible appliances, according to EcoFlow
- Battery chemistry
- LiFePO₄ (LFP)
- Battery life
- Approximately 3,000 cycles to 80% original capacity, according to EcoFlow
- Weight
- Approximately 3.5kg
- Dimensions
- Approximately 25.5 × 21.2 × 11.3cm
- AC charging
- Approximately 0 to 100% in 60 minutes, according to EcoFlow
- Solar input
- Up to 110W
- Car charging
- Supported
- App control
- EcoFlow app via WiFi and Bluetooth
- UPS switchover
- Less than 20ms, according to EcoFlow
- Noise
- Less than 30dB during normal operation, according to EcoFlow
- AC outlet
- UK three pin Type G socket configuration shown by genuine UK product imagery and official UK product information
Why we recommend it
Portability is the whole point
The EcoFlow RIVER 3 sits at the lightweight end of the Horizon Living portable power comparison. At approximately 3.5kg it is considerably easier to carry than the larger 1kWh, 2kWh and 4kWh models.
The 245Wh capacity and 300W rated AC output are deliberately modest. This is not intended to replace a large home backup system. Its strength is providing useful portable energy for electronics and appropriate smaller devices in a package that is easy to transport.
It is worth being clear about EcoFlow's X Boost feature: it does not mean the RIVER 3 provides 600W of normal continuous AC output. Its rated AC output is 300W.
Real world use
Where the RIVER 3 fits
The combination of approximately 245Wh capacity and 3.5kg weight makes this more useful when portability matters than maximum runtime. Individual appliance runtimes vary with consumption and inverter losses, so always check your own appliance ratings.
Camping
Small and light enough to carry to a pitch, with enough energy for lighting, phones and small devices on a day trip.
Day trips
A convenient way to keep phones, cameras and tablets charged on the move without a bulky or heavy unit.
Road trips
Easy to pack in a car and top up from the vehicle using car charging support, then use at your destination.
Laptops
Enough capacity and output to extend a laptop's working time away from a mains supply for shorter sessions.
Phones and tablets
Comfortable for repeated phone and tablet top ups over the course of a day or evening away from mains power.
Cameras and portable lighting
Useful for topping up camera batteries and small LED lighting on location without a heavy pack.
Portable electronics
Suited to the kind of small electronics most people actually carry day to day, rather than kitchen appliances.
Light emergency backup
Enough to keep a router and phone going during a brief power cut, though not a substitute for a larger backup unit.
Charging, solar and the app
Getting power in and keeping track of it
Mains charging
EcoFlow quotes approximately 0 to 100% in 60 minutes from mains, so a full top up between trips is quick.
Solar and car charging
Up to 110W solar input with compatible panels, plus car charging support for topping up on the road. Panels are not included with the standard power station.
EcoFlow app and UPS
WiFi and Bluetooth control let you monitor battery level, input and output, and adjust charge settings. The unit also offers UPS capability with a less than 20ms switchover, according to EcoFlow.
Portability
Why it earns the Best Lightweight position
At approximately 3.5kg, the RIVER 3 is substantially lighter than the larger models elsewhere in the Horizon Living portable power selection. The difference is not marginal: it is the gap between a unit you genuinely carry and one you mainly transport in a vehicle.
That makes it particularly attractive for people who actually need to carry their power station, whether to a tent pitch, a viewpoint, a desk away from mains power or a day out, rather than simply transporting it occasionally in a car or van.
Pros and cons
The short version
Pros
- Approximately 3.5kg
- Compact dimensions
- LiFePO₄ battery
- Fast mains charging
- Solar charging support
- EcoFlow app control
- WiFi and Bluetooth connectivity
- UPS functionality
- Quiet operation
- Well suited to genuinely portable use
Cons
- 245Wh capacity is much lower than larger power stations
- 300W rated AC output limits appliance choice
- Not intended for high power appliances
- Not suitable for extended whole home backup
- Solar panels add to the overall purchase cost
RIVER 3 FAQs
Common questions
Has Horizon Living physically tested the EcoFlow RIVER 3?
No. This review is based on official EcoFlow UK documentation and specifications, credible independent information and verified owner feedback. We do not publish hands on testing results.
Is the EcoFlow RIVER 3 good for camping?
Yes. At around 3.5kg with 245Wh of capacity, it is genuinely portable and holds enough energy for phones, lighting, cameras and small devices over a day trip.
How much capacity does it have?
245Wh using LiFePO₄ cells. That is a compact, lightweight capacity best suited to devices and small electronics rather than extended or heavy use.
How much does it weigh?
Approximately 3.5kg, which makes it genuinely portable and easy to carry.
What appliances can it run?
Appliances within the 300W rated AC output, such as laptops, phones, cameras, lighting and small electronics. Always check the continuous rating and any start up surge of your appliance.
What does EcoFlow X Boost mean?
X Boost is an EcoFlow feature that can drive certain compatible appliances with higher draw up to 600W. It does not mean the unit provides 600W of continuous normal AC output. Its normal rated AC output is 300W.
How quickly does it charge?
EcoFlow quotes approximately 0 to 100% in 60 minutes from mains. Real world speed depends on the power source and conditions.
Can it charge from solar panels?
Yes, with up to 110W of solar input using compatible panels. Panels are not included with the standard power station, and real world speed depends on the panels and the weather.
Can it charge in a car?
Yes. Car charging is supported, making it convenient to top up between stops on a road trip.
Does it have app control?
Yes. The EcoFlow app connects via WiFi and Bluetooth for monitoring battery level, input and output, and adjusting charge settings.
Can it be used as a UPS?
Yes. EcoFlow quotes a switchover of less than 20ms, which can keep sensitive devices running through a brief mains interruption.
Does the UK EcoFlow RIVER 3 have a UK three pin socket?
Yes. The UK model uses the UK three pin Type G socket configuration shown by genuine UK product imagery and official UK product information.
Final verdict
Who should buy the EcoFlow RIVER 3?
It is our Best Lightweight choice in the Horizon Living portable power selection. It is particularly suitable for buyers who prioritise low weight, compact dimensions and easy everyday portability over large battery capacity and high AC output. For camping, day trips, laptops, phones and cameras, the RIVER 3 is a power station you actually carry rather than one you have to plan around.
Buyers needing longer runtimes or heavier appliance use should consider one of the larger models in the Horizon Living comparison instead.
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