EcoFlow RIVER 3 Portable Power Station

EcoFlow RIVER 3 UPS – Design and Build

The EcoFlow RIVER 3 UPS is thoughtfully engineered to serve both indoor and mobile environments. Its size (255 × 212 × 113 mm) and weight make it portable enough for caravans, campervans or mobile workstations, yet reliable enough for emergency home-power applications. The use of LiFePO₄ chemistry ensures a long lifecycle (approximately 3 000 charge cycles to 80% capacity) and durable performance over years of use.

It features a robust outer shell that, in certain markets, meets IP54-level protection against dust and water ingress and is drop-resistant when handled carefully. The quiet fan and GaN-based inverter technology mean the unit operates with minimal audible disruption – an important factor for sleeping quarters, mobile offices or live-in-caravan scenarios.

EcoFlow RIVER 3 UPS – Performance & Output Capabilities

This unit delivers a continuous AC output of 300 W (surge and X-Boost capability up to 600 W) via one 230 V~50 Hz outlet, making it suitable for laptops, lighting systems, small refrigerators and network hardware. Additionally, it has:

• Two USB-A ports (5 V, 2.4 A max each, total 24 W)
• One USB-C port (supporting 5/9/12/15 V⎓3 A max, 20 V⎓5 A max, 100 W)
• One 12.6 V car-style output (10 A, max 126 W)

On the input side it supports fast AC charging to full (0–100%) in just 60 minutes (300–320 W input) and solar input up to approximately 110 W (charging from 0–100% in around 2.6 hours under optimal conditions). The <10 ms (or <20 ms, depending on variant) switchover ensures that attached systems resume seamlessly when external power fails.

EcoFlow RIVER 3 UPS – Why It Works for Caravan & Mobile Living

For the caravan, RV or mobile-office lifestyle, the RIVER 3 UPS hits a sweet spot between portability and performance. Its compact footprint makes it ideal for installation under seats, in wardrobes or the rear of a trailer. The UPS functionality means network gear, WiFi routers, portable fridges or surveillance systems won’t glitch when shore power drops out. It can power a 3 W home router for up to around 30 hours on a 245 Wh capacity.

For users who need to keep critical devices running—such as a laptop editing video while camping, or a small fridge and lighting system inside a van—this unit offers meaningful runtime, fast recharge when shore power is restored, and minimal noise – a real advantage in compact mobile living spaces.

EcoFlow RIVER 3 UPS – Variant Difference (10 ms vs 20 ms)

When purchasing you’ll note two switchover-spec variants of the RIVER 3 UPS: one offering <10 ms and one offering <20 ms transfer. The faster (<10 ms) model is better suited to highly sensitive equipment where even brief interruption would cause problems. Availability of each variant may depend on region, so purchasers should verify model designation to ensure the correct switchover specification is received.

EcoFlow RIVER 3 UPS – Specification Table

EcoFlow RIVER 3 UPS – Use Cases & Tips

• Use it as a seamless swap-over backup for network gear in a caravan: plug your router, NAS or modem into its AC outlet and let the UPS switching protect against shore-power flickers.
• Take it camping or off-grid as a lightweight but capable power source for a laptop, phone charging, lights, small fridge or camera gear.
• Position it near your workstation or creative setup in a small mobile office to avoid data loss from power outages – the <10 ms switchover ensures minimal interruption.
• When solar panels are available (110 W compatible), use the RIVER 3 UPS as part of a solar-rechargeable mobile power system: the fast recharge means you get up and running quickly.
• For caravan living where space and noise matter, the quiet operation keeps sleeping or working environments peaceful.

Final Thoughts – EcoFlow RIVER 3 UPS

For those seeking a reliable, compact and flexible power station that doubles as a true UPS for sensitive equipment, the EcoFlow RIVER 3 UPS stands out. Its combination of portability, fast recharge, quiet operation and solid output makes it well-suited for caravan, mobile office or light home-backup use. The choice between the <10 ms and <20 ms switchover should be driven by how mission-critical the attached devices are. Consider placement, recharge strategy and device load to get the most out of this versatile unit.

What's Included

Contents may vary slightly depending on model or bundle. Some variations may include additional accessories or upgraded components.