BLUETTI’s EB3A and EcoFlow’s RIVER 3 Plus land in the same small-station class: both pair a LiFePO4 battery of under 300Wh with a 600W inverter, and both weigh about 10 pounds. Beyond that, they’re built for different jobs. EcoFlow’s U.S. store lists the RIVER 3 Plus at 286Wh with a sub-10 ms UPS switchover and an optional add-on battery that takes it to 858Wh, priced at $299 on Oct. 17, 2026. BLUETTI’s EB3A answers with more ways to charge small gear and a few camp-friendly extras. Here’s how to choose between them.
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Specs come from BLUETTI’s EB3A user manual and EB3A product page, and from EcoFlow’s U.S. product page for the EcoFlow RIVER 3 Plus. I haven’t run a capacity test on either unit, so runtimes below are labeled estimates.
The Short Answer
| If you mainly want… | Better pick | Why |
|---|---|---|
| A UPS for a router, NAS or PC | RIVER 3 Plus | Sub-10 ms switchover listed; PC/NAS data port |
| Room to grow later | RIVER 3 Plus | Add-on battery to 858Wh; the BLUETTI doesn’t expand |
| Three AC outlets | RIVER 3 Plus | 3 AC vs 2 |
| Lots of small 12V gear | BLUETTI | Car outlet plus two DC5521 barrel ports |
| Cable-free phone charging | BLUETTI | 15W wireless pad on top |
| Light at camp without packing a lantern | BLUETTI | Built-in LED lamp |
| Faster solar refills | RIVER 3 Plus (slightly) | 220W vs 200W solar input |
Full Spec Comparison
| Spec | BLUETTI EB3A | EcoFlow RIVER 3 Plus |
|---|---|---|
| Battery | 268.8Wh LiFePO4 | 286Wh LiFePO4 |
| Rated cycles | 2,500+ to 80% | 3,000 to 80% |
| Expansion | None | EB300 or EB600, up to 858Wh total |
| AC outlets | 2 | 3 (two on the rear) |
| Inverter | 600W, 1,200W surge | 600W, 1,200W surge |
| Boost mode for resistive loads | Power Lifting, up to 1,200W | X-Boost, up to 1,200W |
| USB-C | 1 × 100W | 1 × 100W |
| USB-A | 2 × 5V/3A | 2 × 12W |
| 12V DC | Car outlet 12V/10A + 2 × DC5521 | Not listed on the spec table |
| Wireless charging | 15W | No |
| Built-in light | Yes | No |
| Wall charging | 268W standard; 350W Turbo via app, 0–80% in about 30 min | 380W, 0–100% in 60 min |
| Solar input | 200W, 12–28V, 8.5A | 220W |
| Car charging | Via 12V car input | 11–55V input, 0–100% in 3.3 h |
| UPS | UPS bypass mode | <10 ms switchover |
| Noise (maker claim) | Not listed | <30 dB in EcoFlow’s lab |
| Weight | 10.14 lb (4.6 kg) | 10.4 lb |
| Size | 10.04 × 7.09 × 7.20 in | 9.2 × 9.1 × 5.8 in |
| App | BLUETTI app (Bluetooth) | EcoFlow app |
Where the RIVER 3 Plus Pulls Ahead
It can grow with you
Expansion is the headline difference. EcoFlow sells two add-on batteries for the RIVER 3 Plus, the 286Wh EB300 and the 572Wh EB600, for up to 858Wh total. That turns a desk UPS into something that can carry a Starlink Mini through a long weekend. The EB3A is fixed at 268.8Wh. If you think you’ll need more capacity within a year or two, the RIVER 3 Plus avoids buying a second station later.
Specified UPS switchover
EcoFlow lists a switchover under 10 ms and includes a data port that works with its software to warn a PC or NAS when the battery is running low. BLUETTI’s manual describes its UPS function as a bypass mode, where wall power feeds the AC outlets and the battery takes over when the grid drops, without a published switchover time. For a router, either approach works well. For a desktop computer or network storage, a published specification is the safer bet. Our power station vs UPS guide explains what switchover time means.
Three outlets and a quiet build
The RIVER 3 Plus has three AC outlets, two of them on the back, which keeps plugs tidy under a desk. EcoFlow also claims it runs under 30 dB in its lab.
Where the EB3A Pulls Ahead
Small-gear ports
The BLUETTI carries a 12V/10A car outlet plus two DC5521 barrel jacks, which are handy for LED strips, small fans, some routers and camera gear without going through the inverter. The 15W wireless pad on top charges a phone or earbuds with no cable, though BLUETTI notes that the DC output has to be switched on for it to work.
Camp-friendly extras
The built-in LED lamp is a genuinely useful touch for night setup at a campsite or during an outage. It’s one less thing to pack.
Quick top-ups from the wall
With Turbo charging switched on in the app, BLUETTI quotes 0–80% in about 30 minutes. That’s handy when you have a short window at an outlet, such as a café or campground bathhouse. The RIVER 3 Plus is also fast, at a full charge in about an hour.
Runtime Estimates
These are our estimates, using roughly 85% of rated capacity through the inverter. USB-C loads usually do a little better because they skip the AC conversion.
| Load | BLUETTI (268.8Wh) | RIVER 3 Plus (286Wh) | RIVER 3 Plus + EB600 (858Wh) |
|---|---|---|---|
| Wi-Fi router + modem, 15W | ~15 h | ~16 h | ~48 h |
| Starlink Mini, ~30W | ~7.5 h | ~8 h | ~24 h |
| CPAP without humidifier, ~40W | ~5.5 h | ~6 h | ~18 h |
| Laptop via USB-C, 60W | ~3.9 h | ~4.1 h | ~12 h |
| 32-inch TV, ~50W | ~4.5 h | ~4.9 h | ~14.5 h |
For the math behind runtimes like these, our battery runtime guide walks through watt-hours, inverter losses and real appliances.
Solar Charging
Both take a single panel or a parallel pair. The BLUETTI accepts up to 200W and 8.5A; the RIVER 3 Plus is rated for 220W, and EcoFlow says it can charge from 0–100% in as little as 1.5 hours under ideal conditions. On either station, a single 100W panel is a comfortable match, and a 200W panel is about the practical maximum. Because the EB3A caps current at 8.5A, a 200W “12V” panel running near 10A in full sun may be trimmed slightly at peak. Our solar panel specs explainer shows how to read Voc and current on the label.
Three Buyers, Three Answers
The remote worker who wants a router and laptop to ride through outages should get the RIVER 3 Plus: the specified switchover and data port are made for that, and the EB600 can be added later.
The weekend camper charging phones, lights and a small fan will appreciate the BLUETTI’s extra ports and light.
The Starlink Mini owner on the road should lean toward the RIVER 3 Plus, for the expansion path and 220W solar input. Both run a Mini from USB-C if they provide a 100W PD output, which Starlink lists as the minimum. Our guide to powering a Starlink Mini off-grid covers cables and adapters.
What Neither One Is Built For
At under 300Wh each, both are small stations. Neither can keep a full-size refrigerator going overnight, since a typical fridge uses 1–2 kWh a day, and a space heater or hair dryer will drain either one in well under half an hour even in boost mode. Our refrigerator watts guide shows how to check your own appliance. If those loads matter, look at a 1kWh-plus station instead, or plan to pair the RIVER 3 Plus with the EB600, which still won’t run a large fridge for more than about a day by our estimate.
Accessories to Budget For
- A 100W to 200W portable panel. Either station takes a single folding panel with the correct connector or adapter.
- An add-on battery (RIVER 3 Plus only). The EB300 doubles the base capacity; the EB600 triples it.
- A 100W USB-C cable if you plan to run a laptop or Starlink Mini from USB-C. A cable rated below 100W can limit power.
- A car charging cable for topping up on the road. EcoFlow lists 11–55V car input for the RIVER 3 Plus, with a full charge in about 3.3 hours.
Four Questions to Ask Before You Pick
- What will you plug in most often? Write down the three devices you’ll use every time, then look up their wattage on the label or charger. If the total stays under about 150W, either station will feel roomy. Closer to 400–600W, the battery drains quickly no matter which brand you choose.
- Will it sit on a desk or ride in a car? A desk unit benefits from rear outlets, quiet operation and a published switchover time. A car or camp unit benefits from lots of low-voltage ports, a light and quick top-ups.
- How long are your outages or trips? For a two-hour blackout, 270–290Wh is plenty for internet and a laptop. For a three-day weekend away from outlets, plan on solar or more capacity.
- Do you already own panels or cables? Check the connector and voltage of any panel you have. Reusing gear you already own can tip the decision.
FAQ
Which has more capacity, the EB3A or RIVER 3 Plus?
The RIVER 3 Plus, by about 17Wh, and it can expand to 858Wh. BLUETTI’s unit can’t be expanded.
Do both use LiFePO4 batteries?
Yes. BLUETTI rates its unit for 2,500+ cycles to 80% and EcoFlow rates the RIVER 3 Plus for 3,000.
Can either run a 1,000W kettle?
Both can run resistive appliances up to 1,200W in a reduced-power boost mode (BLUETTI Power Lifting, EcoFlow X-Boost). The appliance runs slower than normal. Motor loads don’t benefit.
Which is better as a UPS?
The RIVER 3 Plus, which lists a switchover under 10 ms and a PC/NAS data port.
Which charges faster from the wall?
The BLUETTI to 80% (about 30 minutes in Turbo, per BLUETTI); the RIVER 3 Plus to 100% (about 60 minutes, per EcoFlow).
Which is lighter?
The BLUETTI, at 10.14 lb vs 10.4 lb. In practice the difference is negligible.
Verdict
For most buyers, the EcoFlow RIVER 3 Plus is the more flexible choice: one more outlet, a specified UPS switchover and an expansion path to 858Wh. The BLUETTI EB3A remains a great fit for campers who want more small-device ports and a light built in. If you want more ports and USB-C power in the same size class, also see our hands-on BLUETTI Elite 30 V2 review.