Start Small. Power Strong
The EcoFlow RIVER 3 (EFRIVER3-UPS-EN-Cbox) is a compact, ultra-portable power station designed as an entry-level yet highly capable backup solution, emphasizing fast charging, quiet operation, and reliable UPS functionality for home offices, small appliances, camping, or emergencies. With a 245Wh LiFePO4 battery (offering 3000 cycles to 80% capacity for long-term durability), it delivers 300W continuous AC output (surge 600W) and X-Boost technology to handle up to 600W resistive loads like heaters or small devices without overload. It features an ultra-fast <20 ms UPS switchover (some variants claim <10 ms) to keep sensitive electronics like routers, PCs, or NAS uninterrupted during outages, along with smart outage alerts via the EcoFlow app. Recharging is exceptionally quick—0–100% in 1 hour via 320W AC input (X-Stream technology, no adapter needed) or up to 110W solar input (11–30V, 8A max), plus car charging support. Multiple outputs include 2 AC outlets, 2 USB-A (24W total), 1 USB-C (100W max PD), and 1 car port (126W max), enabling simultaneous powering of phones, laptops, lights, fans, or mini-fridges. At just 3.5 kg (7.7 lb) and dimensions around 255 × 212 × 113 mm, it’s 30% more compact than similar-capacity rivals, operates whisper-quiet (<30 dB), and includes app control for monitoring, customization, and firmware updates—making it an affordable, versatile starter power station for indoor/outdoor use with strong emphasis on speed, silence, and seamless backup protection.
Key Features
Ultra-Fast 1-Hour Full Charge
The EcoFlow RIVER 3 recharges from 0 to 100 percent in just 1 hour using X-Stream technology with up to 320W AC input, eliminating the need for a bulky external adapter. This rapid charging capability makes it ideal for quick top-ups during short breaks, emergencies, or when preparing for outages, ensuring the power station is ready when you need it most.
Less Than 20 ms UPS Switchover
With an ultra-fast UPS switchover time of under 20 ms (some modes as low as 10 ms), the RIVER 3 seamlessly transitions to battery power during blackouts to keep sensitive devices like routers, computers, NAS drives, or smart home hubs running without interruption. Smart outage alerts via the EcoFlow app notify users instantly, providing peace of mind for home office or critical electronics protection.
300W Output with 600W X-Boost
The power station delivers 300W continuous AC output with a 600W surge capacity and X-Boost technology that supports resistive loads up to 600W, such as small heaters, fans, or mini-fridges. Multiple outlets including 2 AC, 2 USB-A (24W total), 1 USB-C (100W PD), and 1 car port (126W) allow simultaneous powering of several devices for versatile indoor or outdoor use.
Long-Lasting LiFePO4 Battery
The 245Wh capacity uses safe, durable LiFePO4 battery chemistry, rated for 3000 cycles to 80 percent capacity, ensuring reliable performance over many years. This long lifespan combined with quiet operation under 30 dB makes the RIVER 3 a dependable, low-maintenance power solution for daily backup, camping, or small appliance needs.
Compact and Lightweight Design
Weighing only 3.5 kg and measuring approximately 255 by 212 by 113 mm, the RIVER 3 is 30 percent more compact than similar-capacity alternatives, making it highly portable for travel, camping, or moving between rooms. The sleek design, app-based monitoring, and support for 110W solar input add convenience for off-grid use while maintaining easy handling and storage.
What’s in the Box
- RIVER 3
- AC Charging Cable
- Quick Start Guide and Warranty
FAQs
How fast does the RIVER 3 actually charge, and what are the real-world times?
The RIVER 3 recharges from 0–100% in about 1 hour using 320W AC input (X-Stream technology, no external adapter needed). Real-user reports confirm 50–60 minutes for a full charge from a standard wall outlet, and slightly longer (70–90 min) if using a lower-wattage outlet or extension cord. Solar charging at 110W max takes 3–4 hours in good sunlight. Many users praise this as one of the fastest recharge times in its capacity class.
How reliable is the UPS function—will it really keep my router/PC running during outages?
The <20 ms (often measured at 10–15 ms) UPS switchover is very fast and reliable for most users. It keeps routers, NAS drives, PCs, modems, and smart home hubs online during short blackouts without interruption. EcoFlow claims it protects sensitive electronics, and reviews confirm no reboots on typical home/office setups. However, very high-draw devices (>300W continuous) may trip the limit during UPS mode—best for low-to-moderate loads.
Can it run a mini-fridge, fan, or small heater, and for how long?
Yes, with X-Boost it can handle resistive loads up to 600W (e.g., small space heaters, mini-fridges, fans). A typical 100–150W mini-fridge runs 1.5–2.5 hours; a 50–80W fan lasts 3–5+ hours. Runtime drops quickly with higher loads—use the EcoFlow app calculator for estimates. Users love it for short outages or camping, but it’s not designed for heavy, prolonged appliance use like larger power stations.
Is the solar charging good, and what panels work best?
It supports up to 110W solar input (11–30V, 8A max), charging fully in 3–4 hours with optimal sunlight using a 100–110W portable panel. Most users pair it with EcoFlow’s 110W or 160W foldable panels (or compatible third-party 100W panels with MC4 connectors). Charging speed depends on sunlight and panel angle—real-world reports show 60–90W in good conditions. It’s praised as a solid entry-level solar backup option.
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