EcoFlow’s RIVER 2 Pro and RIVER 3 Plus are both LiFePO4 power stations from the company’s compact RIVER line, but they solve different problems. According to EcoFlow’s US product pages, the RIVER 2 Pro holds 768Wh and puts out 800W (1,600W with X-Boost). The newer RIVER 3 Plus holds 286Wh and puts out 600W, but it adds a sub-10ms UPS switchover, a quiet rating under 30 dB and stackable extra batteries that take it to 858Wh. On October 17, 2026, EcoFlow listed the RIVER 3 Plus at $299 and the RIVER 2 Pro at $389, down from $529. This comparison lays out the specs, worked runtime and solar estimates, and which one fits camping, home office and outage use.
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Amazon listings: EcoFlow RIVER 2 Pro and EcoFlow RIVER 3 Plus. Specs come from EcoFlow’s US product pages and the RIVER 2 Pro user manual. I haven’t tested either unit, so the runtime and charging figures below are labelled estimates.
Quick verdict
- Choose the RIVER 2 Pro for capacity per dollar: 768Wh out of the box, an 800W inverter, and a 12V car outlet plus DC5521 ports for camping gear.
- Choose the RIVER 3 Plus for a quiet, compact UPS for a desk, router or gaming setup, with room to grow to 858Wh through EcoFlow’s wire-free extra batteries.
Spec comparison
| Spec | RIVER 2 Pro | RIVER 3 Plus |
|---|---|---|
| Capacity | 768Wh | 286Wh (expandable to 858Wh) |
| Chemistry and cycles | LFP, 80%+ after 3,000 cycles | LiFePO4, 3,000 cycles to 80% |
| AC output | 800W pure sine (1,600W surge/X-Boost) | 600W, 3 outlets (1,200W surge/X-Boost) |
| AC outlets | 4 | 3 (two on the rear) |
| USB-C | 1 × 100W (input/output) | 1 × 100W |
| USB-A | 3 × 12W | 2 × 12W (24W total) |
| 12V outputs | Car outlet 12.6V/10A (126W); 2 × DC5521 12.6V/3A | Not listed in EcoFlow’s US spec table |
| AC charging | 940W max; 0–100% in 70 min | 380W; 0–100% in 60 min |
| Solar input | 11–50V, 13A, 220W max | 220W; 0–100% in as fast as 1.5 hr |
| Car charging | 12V/24V, 8A, 100W max | 220W, 11–55V; 0–100% in 3.3 hr |
| Switchover | <30ms EPS | <10ms UPS |
| Noise | Up to 62 dB at high-wattage charge or discharge | <30 dB at 1.5 ft (EcoFlow lab) |
| Weight | 18.2 lb (product page); 17.2 lb (user manual) | 10.4 lb |
| Dimensions | 10.6 × 10.2 × 8.9 in | 9.2 × 9.1 × 5.8 in |
| App | Wi-Fi and Bluetooth | App, plus PC/NAS data interface for outage alerts |
| Charge temperature | 32–113°F | 32–113°F |
| Price on EcoFlow US (Oct 17, 2026) | $389 (regular $529) | $299 |
Capacity and cost per watt-hour
The RIVER 2 Pro has 2.7 times the capacity of a base RIVER 3 Plus. At EcoFlow’s October 17 prices, that works out to about $0.51 per Wh for the RIVER 2 Pro ($389 ÷ 768) and about $1.05 per Wh for the RIVER 3 Plus ($299 ÷ 286). If watt-hours are what you’re buying, the RIVER 2 Pro wins clearly.
The RIVER 3 Plus closes the gap with extra batteries. EcoFlow says it takes the EB300 (286Wh) or EB600 (572Wh), stacked without cables, for up to 858Wh. That lets you start small and add capacity later.
Runtime estimates
These are estimates. For AC loads I assume about 85% of capacity reaches the device after inverter losses: hours ≈ Wh × 0.85 ÷ watts. That’s about 243Wh usable for the RIVER 3 Plus, 653Wh for the RIVER 2 Pro, and 729Wh for a RIVER 3 Plus with an EB600.
| Load | RIVER 3 Plus (286Wh) | RIVER 3 Plus + EB600 (858Wh) | RIVER 2 Pro (768Wh) |
|---|---|---|---|
| Wi-Fi router, 10W | About 24 h | About 73 h | About 65 h |
| Starlink Mini, 22W (my measured reading) | About 11 h | About 33 h | About 30 h |
| CPAP without humidifier, 40W | About 6 h | About 18 h | About 16 h |
| Laptop, 60W | About 4 h | About 12 h | About 11 h |
| Mini fridge, about 1kWh/day (42W avg) | About 5.8 h | About 17 h | About 15.5 h |
| Desktop PC and monitor, 300W | About 49 min | About 2.4 h | About 2.2 h |
EcoFlow’s own figure for the RIVER 3 Plus is up to 35 hours on a 3W router, and it says the GaN-based design gives up to twice the runtime on light loads. The Starlink Mini figure uses the 22W I measured on my own setup in my BLUETTI Elite 30 V2 and Starlink Mini review.
Charging speed
| Method | RIVER 2 Pro | RIVER 3 Plus |
|---|---|---|
| Wall outlet | 0–100% in 70 min (940W max) | 0–100% in 60 min (380W) |
| 220W solar, EcoFlow figure | 4.5–9 hr with EcoFlow panels (solar generator page) | As fast as 1.5 hr |
| 220W solar, my estimate at 70% real output | About 5 hr of strong sun | About 1.9 hr |
| 100W panel, my estimate | About 11 hr (two sunny days) | About 4.1 hr |
| Car | 100W max (8A at 12/24V) | 220W; 0–100% in 3.3 hr |
Both cap solar at 220W, so the smaller RIVER 3 Plus refills about 2.7 times faster from the same panels. To size panels for daily use, divide your daily watt-hours by 5 sun hours × 0.75. A 400Wh day needs about 107W of panels, within either unit’s 220W limit.
UPS and home-office use
The RIVER 3 Plus is built for this. EcoFlow quotes a switchover under 10ms and says its PC- and NAS-compatible data interface can alert you and help save work when the battery runs low. Its two rear AC outlets keep cables tidy, and the under-30 dB rating suits a bedroom or office. EcoFlow says it can run a 600W computer for at least 21 minutes, enough for a safe shutdown.
The RIVER 2 Pro’s EPS switches in under 30ms. Its manual describes this as a basic UPS feature without 0ms switching, and says not to rely on it for devices that need uninterrupted power. Its bigger battery keeps a router and modem going much longer, but EcoFlow notes it can reach 62 dB when charging or discharging at high wattage.
Camping and car use
The RIVER 2 Pro is the better camp box. It has a 126W 12V car outlet for a compressor fridge, two DC5521 ports for small 12V gear, and three times the energy. Running a 12V fridge from DC instead of AC avoids inverter losses: at about 16W average and 90% DC efficiency, the RIVER 2 Pro would run one for roughly 43 hours by my estimate. My Delta 3 Max camping test shows the same DC-versus-AC advantage on a bigger EcoFlow.
The RIVER 3 Plus charges faster from the car, at 220W versus 100W, and is about 8 pounds lighter. That makes it easy to toss in a backpack or under a seat for phones, cameras and a laptop.
Setup tips for either unit
- Update firmware and connect the app before first use, so you can set charge limits and AC timeout.
- Set AC output to “Never Turn Off” in the app when using it as backup for a router or PC. The RIVER 2 Pro manual recommends this for continuous loads.
- Use DC outputs where you can. USB-C and 12V skip the inverter and stretch runtime.
- Turn on X-Boost only for resistive loads such as kettles or hair dryers. The RIVER 2 Pro manual warns it isn’t suitable for appliances with voltage protection.
- Charge above 32°F. Both list a 32–113°F charge range.
FAQ
Is the RIVER 3 Plus better than the RIVER 2 Pro?
It’s newer, quieter and has a faster UPS switchover, but it holds about a third of the energy. For runtime, the RIVER 2 Pro is stronger; for a desk UPS or ultralight kit, the RIVER 3 Plus fits better.
Can the RIVER 3 Plus match the RIVER 2 Pro’s capacity?
With an EB600 extra battery, it reaches 858Wh, which is more than the RIVER 2 Pro’s 768Wh, at an added cost.
Which charges faster?
EcoFlow quotes 60 minutes for the RIVER 3 Plus and 70 minutes for the RIVER 2 Pro on AC. On solar, both cap at 220W, so the smaller RIVER 3 Plus fills sooner.
Does the RIVER 3 Plus have a 12V car outlet?
EcoFlow’s US spec table lists only AC, USB-A and USB-C outputs for it. The RIVER 2 Pro lists a 126W car outlet and two DC5521 ports.
Which is quieter?
The RIVER 3 Plus, rated under 30 dB at 1.5 feet. EcoFlow says the RIVER 2 Pro can reach 62 dB under high-wattage charging or discharging.
Can either run a microwave?
A typical 1,000W+ microwave exceeds both rated outputs. X-Boost is meant for resistive heating loads and lowers voltage, which doesn’t suit microwaves well.
What warranty do they have?
EcoFlow’s RIVER 2 Pro page lists a 5-year warranty. Check the RIVER 3 Plus listing for its current terms.
Bottom line
The RIVER 2 Pro is the value pick when you want the most watt-hours, an 800W inverter and 12V outputs for camping. The RIVER 3 Plus is the refined pick for quiet, fast UPS backup in a 10.4-pound box that can grow to 858Wh.