Quick answer
The EcoFlow River 3 is the right call for buyers who want a genuinely portable, affordable LiFePO4 backup and don’t need to run more than small electronics — a 245Wh battery, 300W continuous output (600W via X-Boost), and a roughly 60-minute full recharge, according to EcoFlow’s own specs, all packed into a 7.8 lb body priced around $199-229. The trade-off: at 300W continuous, it can’t run a CPAP with a heated humidifier, a hair dryer, or anything drawing more than a few hundred watts without leaning on X-Boost, and unlike its sibling the River 3 Plus, it has no battery-expansion path.
We’ve referenced the River 3 Plus, the River 3’s larger sibling, across several posts on this site as the compact/ultralight pick. This review covers the smaller, cheaper base model.
At a glance
| Spec | EcoFlow River 3 |
|---|---|
| Capacity | 245Wh LiFePO4 |
| AC output | 300W continuous (600W X-Boost surge) |
| Wall recharge to full | ~60 min (0-100%) |
| Weight | ~7.8 lb |
| Cycle life | 3,000 cycles to 80% capacity |
| Warranty | 5 years |
| Water resistance | IP54 |
| Price | ~$199-229 |
| Rating | ★★★★☆ (4.0/5) |
What we like
- One of the lightest LiFePO4 stations EcoFlow sells. At 7.8 lb, the River 3 is easy to toss in a daypack or glovebox — noticeably lighter than the River 3 Plus (10.4 lb) and far lighter than any 1kWh-class unit on this site, which typically run 22-35 lb.
- Fast recharge for its size. EcoFlow’s official specs list a full 0-100% wall recharge in about 60 minutes, on par with the much larger EcoFlow Delta 2’s ~50-minute time to 80% — the River 3 simply has less capacity to fill.
- 5-year warranty at a budget price. EcoFlow backs the River 3 with the same 5-year warranty term as its larger, pricier stations — a real differentiator against 1-year-warranty budget units like the Renogy Phoenix 1000.
- IP54 water resistance. Splash and dust protection most sub-$250 power stations skip, useful for patio, camping, or job-site use where a stray splash shouldn’t be a dealbreaker.
Where it falls short
- 300W continuous is a hard ceiling. X-Boost pushes it to 600W for higher-draw devices, but that’s still not enough for a hair dryer, space heater, or a CPAP running a heated humidifier — this is a phones/laptops/small-appliance unit, not a home-backup one.
- No expansion battery. The River 3 Plus supports add-on batteries for more capacity later; the base River 3’s 245Wh is fixed for the life of the unit.
- Slower UPS switchover than the Plus. EcoFlow rates the base River 3’s UPS response at sub-20ms versus sub-10ms on the Plus — both are fast enough for most electronics, but sensitive gear (some CPAPs, medical equipment) may prefer the quicker switch. See our power station vs. UPS comparison for how this stacks up against a dedicated desk UPS.
Who should buy it
The River 3 is the right call if you want a cheap, light LiFePO4 backup for phones, a laptop, a small fan, or basic camping electronics, and don’t need to run anything power-hungry. If you can stretch the budget by $70-80, the River 3 Plus doubles the AC output and adds an expansion path — worth it if you’re not certain 300W will be enough. If you’re comparing against Bluetti’s budget entry, the EB3A sits in the same price and capacity class with a similar features vs money trade-off. And if you need more than a few hundred watts of continuous output, see our full portable power station rankings for the 1kWh-class options that can run higher-draw appliances.
EcoFlow River 3 (245Wh)
- 245Wh LiFePO4 capacity in a 7.8 lb body — one of the lightest stations EcoFlow makes.
- ~60 min full wall recharge and a 5-year warranty, both ahead of its price class.
- 300W continuous output (600W X-Boost surge) covers phones, laptops, and small electronics.
Pairing the River 3 with a spare battery pack or a folding solar panel keeps it topped off on longer trips — Amazon Prime gets solar panels, spare batteries, and cables to your door free in two days, and you can try it free for 30 days.
The bottom line
The EcoFlow River 3 is a genuinely light, affordable entry point into LiFePO4 backup power — fast recharging, well-warrantied, and easy to carry, as long as you accept its 300W ceiling. Buyers who expect to push past that should look at the River 3 Plus or step up to a 1kWh-class station instead. See our full portable power station rankings for how it compares against every capacity class, from pocket units to whole-home backup systems.