Product images: EcoFlow official website
EcoFlow · Portable power station + extra battery
EcoFlow RIVER 3 Plus + EB300
A quiet, fast-switching UPS for your desk that doubles as a camping battery
WattLab Score
How good it is for its size · method
- 572 WhCapacity
- 600 W / 1,200 WAC continuous / surge
- 18.1 lbWeight
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Overview
The RIVER 3 Plus pairs a 286Wh LiFePO4 power station with a clip-on 286Wh EB300 battery for 572Wh in total. It switches to battery in under 10 ms, runs at about 30 dB and puts out 600W from three AC outlets.
Ideal for
Home offices and entertainment setups that want a silent battery-backed UPS for a PC, router and TV, plus a light battery for weekend trips.
Skip it if
Running refrigerators, microwaves or space heaters, which need 1,000W-plus stations.
Editor's ratings · 0–10
Score profile
Seven axes on fixed scales, so scores compare directly across every model on WattLab Review.
What's inside the 7.4 WattLab Score
- Charging speed—
- Battery technology9.0
- Energy density (Wh/lb)6.4
- Solar refill speed5.9
- Value (Wh per $)—
- Versatility (ports & features)8.4
How long will it run?
Estimated runtimes on a full charge for common devices.
| Device | Typical load | Estimated runtime |
|---|---|---|
| Smartphone charge | 15 Wh each | ~32 charges |
| Wi-Fi router + modem | 15 W | ~32 hr |
| CPAP (no humidifier) | 40 W | ~12 hr |
| Laptop | 60 W | ~8.1 hr |
| 12V camping fridge (avg) | 35 W | ~14 hr |
| 32" LED TV | 50 W | ~9.7 hr |
| Full-size fridge (avg) | 150 W | ~3.2 hr |
| Coffee maker | 1,000 W | Exceeds inverter |
Estimates use 85% of rated capacity to account for inverter losses. Real runtimes vary with temperature, battery age and how often appliances cycle.
Full specifications
Battery
| Capacity | 572 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| Rated cycle life | 3,000 cycles |
Output
| AC output (continuous) | 600 W |
|---|---|
| Surge / peak | 1,200 W |
| Power Lifting (resistive loads) | 1,200 W |
| AC outlets (120V, pure sine) | 3 |
| USB-C ports | 2 |
| Max USB-C output | 140 W |
| USB-A ports | 2 |
| 12V car outlet | 12.6V / 10A (126W) |
| DC5521 barrel ports | 0 |
Charging
| Max AC charging input | 380 W |
|---|---|
| AC charge time (standard) | — |
| Fastest full charge | — |
| Max solar input | 220 W |
| Solar input spec | XT60 input, 220W max (EcoFlow's spec page doesn't list the voltage range) |
| Solar charge time | — |
| Car charge time | — |
Size & build
| Weight | 18.1 lb (8.2 kg) |
|---|---|
| Dimensions | RIVER 3 Plus 9.2 × 9.1 × 5.8 in + EB300 9.2 × 8.8 × 4.3 in |
| Rated noise | ≤30 dB |
| Charging temperature | 32–113°F (0–45°C) |
| Discharge temperature | 14–113°F (-10–45°C) |
Smart features & warranty
| UPS switchover | ≤10 ms |
|---|---|
| App control | EcoFlow app (Wi-Fi + Bluetooth) + color LCD |
| Expandable battery | Yes |
| Warranty | 5 years |
Value
| Reference price* | — |
|---|---|
| Wh per dollar* | — |
Other details
| Configuration | RIVER 3 Plus (286Wh) + Smart Extra Battery EB300 (286Wh), joined by pogo pins, no cables |
|---|---|
| Weights | RIVER 3 Plus 10.36 lb + EB300 7.7 lb |
| EB300 USB-C | 1 × 140W, works as input or output; the battery can also be used on its own |
| Main unit USB-C | 1 × 100W |
| X-Boost | Runs some resistive appliances up to 1,200W at reduced voltage |
| Water resistance | IP54 (battery pack only, per EcoFlow) |
| UPS software | USB-B port for EcoFlow Power Manager on a PC or NAS |
| Max expansion | RIVER 3 Plus takes one extra battery: EB300 (286Wh) or EB600 (572Wh), up to 858Wh |
- Fast charging: EcoFlow quotes 0–100% in 1 hr for the RIVER 3 Plus alone (286Wh); it doesn't publish a time for the 572Wh combination.
- Solar time: 0–100% in as fast as 1.5 hr for the RIVER 3 Plus alone, per EcoFlow.
- Cycle life: 3,000 cycles to 80% capacity (EcoFlow rating, both units).
- * Reference price from the manufacturer's US store on the date shown. Amazon's price may be different.
- — means the manufacturer doesn't publish that figure. We never estimate missing specs.
EcoFlow RIVER 3 Plus + EB300
See today's price and availability on Amazon.com
Our take
Most small power stations are built for camping first. EcoFlow pitches the RIVER 3 Plus as a UPS first: it switches over in under 10 ms (StorageReview measured 9 ms), it comes with a USB-B cable so a PC or NAS can see its battery level, and it runs at about 30 dB, quiet enough for a bedroom or office.
This Amazon listing bundles the RIVER 3 Plus with the EB300 Smart Extra Battery. The two snap together with pogo pins, no cables or screws, doubling capacity from 286Wh to 572Wh. The EB300 also has its own 140W USB-C port, so you can unclip it and use it as a large power bank. The pair weighs about 18 lb.
The 600W pure sine wave inverter (1,200W surge) covers a router, modem, monitor, desktop PC, TV or CPAP. X-Boost lets some heating appliances up to 1,200W run at reduced voltage, but it isn't a replacement for a larger station. The LiFePO4 cells are rated for 3,000 cycles to 80%, and EcoFlow backs it with a 5-year warranty.
Charging is quick for the size: the main unit takes up to 380W from the wall and up to 220W of solar through an XT60 port. EcoFlow's 1-hour and 1.5-hour charge times are for the RIVER 3 Plus alone, so expect longer with the EB300 attached. EcoFlow doesn't publish the solar voltage range on its spec page, so check your panel's compatibility first.
Pros
- Under-10 ms UPS switchover, measured at 9 ms by StorageReview
- 572Wh LiFePO4 across two clip-together units
- About 30 dB, quiet enough for a bedroom or office
- EB300 works on its own as a 140W USB-C power bank
- USB-B link for PC or NAS shutdown software
Cons
- 600W output limits it to small appliances
- Charge times EcoFlow quotes are for the main unit only
- Solar voltage range isn't on EcoFlow's spec page
- No longer listed on EcoFlow's US store
What owners and reviewers say
Independent tests
StorageReview tested the RIVER 3 Plus and measured a 9 ms UPS transfer, inside EcoFlow's under-10 ms claim. We'll add Amazon buyer feedback themes once we can verify them.
Compare it head-to-head
- EcoFlow RIVER 3 Plus + EB300 vs BLUETTI Elite 30 V2
- EcoFlow RIVER 3 Plus + EB300 vs Jackery Explorer 1000 v2
- EcoFlow RIVER 3 Plus + EB300 vs Jackery Explorer 300
- EcoFlow RIVER 3 Plus + EB300 vs DJI Power 1000 V2
- EcoFlow RIVER 3 Plus + EB300 vs EcoFlow DELTA 3 Max
- EcoFlow RIVER 3 Plus + EB300 vs EcoFlow DELTA Pro
- EcoFlow RIVER 3 Plus + EB300 vs EcoFlow DELTA Pro 3
- EcoFlow RIVER 3 Plus + EB300 vs PECRON F3000LFP
- EcoFlow RIVER 3 Plus + EB300 vs DYNESS PPS2400
- EcoFlow RIVER 3 Plus + EB300 vs EcoFlow DELTA Pro Ultra X
- EcoFlow RIVER 3 Plus + EB300 vs EcoFlow TITAN Plus + 800W Solar
- EcoFlow RIVER 3 Plus + EB300 vs EcoFlow DELTA Pro 3 + Extra Battery
- EcoFlow RIVER 3 Plus + EB300 vs DABBSSON Turbo 12000
- EcoFlow RIVER 3 Plus + EB300 vs Anker SOLIX E10
- EcoFlow RIVER 3 Plus + EB300 vs Anker SOLIX C1000 Gen 2
- EcoFlow RIVER 3 Plus + EB300 vs BLUETTI AC180
BLUETTI
BLUETTI Elite 30 V2
The pocket-sized LiFePO4 pick with a real 600W inverter
- 288 WhCapacity
- 600 WAC output
- LiFePO4Battery
- 9.48 lbWeight
$289.99reference price*
Jackery
Jackery Explorer 1000 v2
The 1kWh sweet spot for home backup that still fits in a car trunk
- 1,070 WhCapacity
- 1,500 WAC output
- LiFePO4Battery
- 23.8 lbWeight
$559.00reference price*
Jackery
Jackery Explorer 300
The proven ultralight for cameras, drones and weekend camping
- 293 WhCapacity
- 300 WAC output
- Li-ion (NMC)Battery
- 7.1 lbWeight
$289.00reference price*
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EcoFlow RIVER 3 Plus + EB300 on Amazon.com