Specifications checked against manufacturer pages on 2026-08-24.
The Bluetti EB3A (268.8 Wh, 600 W) and the EcoFlow RIVER 2 (256 Wh, 300 W), compared on the figures their makers publish. On the normalized ratios, the EB3A gives more watts per dollar (2.74 W/$ vs 1.44 W/$); the RIVER 2 carries more per pound (33.2 Wh/lb vs 26.5 Wh/lb).
In short. The RIVER 2 leads on watt-hours per pound (33.2 Wh/lb vs 26.5 Wh/lb) and rated cycle life (3,000 vs 2,500). The EB3A leads on continuous watts per dollar (2.74 W/$ vs 1.44 W/$). 3 of 6 measures tie or are not comparable. Note: the EB3A is listed as discontinued at the manufacturer; the price used here is its last list price.
Check the current price
Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.
We do not link the EB3A: we could not confirm a listing for the exact base unit, and we do not link a guess.
Specifications, side by side
Numbered notes below the table give the source location or a caveat for figures that need one; check marks mark the better figure where one can be judged; “Manufacturer does not state” means absent from that maker’s page as of its check date listed under Sources. UPS switchover is how long the outlets go dark when grid power drops.
| Specification | Bluetti EB3A | EcoFlow RIVER 2 |
|---|---|---|
| Rated capacity | 268.8 Wh1 ✓ | 256 Wh2 |
| Usable capacity (calculated)* | 228–242 Wh | 218–230 Wh |
| Continuous AC output | 600 W3 ✓ | 300 W4 |
| Surge output | 1,200 W5 ✓ | 600 W6 |
| Full recharge from wall | 78–108 min7 | 60 min8 |
| Cell chemistry | LiFePO49 | LFP (LiFePO4)10 |
| Rated cycle life | 2,500+ cycles to 80%11,12 | 3,000 cycles to 80%+13,14 ✓ |
| UPS switchover | Manufacturer does not state | 30 ms15 |
| Expandable | No16 | Manufacturer does not state |
| Max solar input | 200 W17 ✓ | 110 W18 |
| Max AC charging input | 350 W19 | 360 W20 |
| AC outlets | 221 | Manufacturer does not state |
| Highest USB-C port | 100 W22 ✓ | 60 W23 |
| App control | Yes24 | Yes25 |
| Stated noise | Manufacturer does not state | Manufacturer does not state |
| Warranty | 2 years26 | 5 years27 ✓ |
| Weight | 10.14 lb28 | about 7.7 lb29 ✓ |
| Manufacturer list price when checked | $21930 | $20931 ✓ |
* Calculated: rated capacity × an assumed 85–90% conversion efficiency; no maker publishes a usable figure.
Notes on the figures
- EB3A, rated capacity: The product title and marketing copy round this to 268 Wh.
- RIVER 2, rated capacity: Rated capacity as listed on the manufacturer’s spec sheet.
- EB3A, continuous output: The spec table lists the two AC outlets as sharing 600 W in total.
- RIVER 2, continuous output: Continuous AC output at 120 V, 50/60 Hz.
- EB3A, surge: Listed in the spec table as the surge rating of the 600 W pure sine wave inverter; the page does not market a separate boost mode.
- RIVER 2, surge: Stated in the AC output line of the spec sheet.
- EB3A, full recharge: Converted from the stated ≈1.3-1.8 hours in the 350 W Turbo charging mode; Standard Mode (268 W) is stated as ≈1.5-2.0 hours. The page separately advertises an 80% charge in 30 minutes.
- RIVER 2, full recharge: Full 0-100% recharge from a wall outlet as stated by the manufacturer.
- EB3A, cell chemistry: Lithium iron phosphate chemistry, as stated in the battery spec table.
- RIVER 2, cell chemistry: The spec sheet lists the cell chemistry as LFP (lithium iron phosphate).
- EB3A, cycle life: Cycle count until the battery retains 80% of its original capacity.
- EB3A, cycle life: From the same sentence as the cycle-life figure.
- RIVER 2, cycle life: The battery retains at least 80% of its capacity after 3,000 charge cycles.
- RIVER 2, cycle life: This threshold comes from the same statement as the cycle-life figure.
- RIVER 2, UPS switchover: EcoFlow describes this as an emergency power source (EPS) switch-over rather than a true uninterruptible power supply, and advises against relying on it for sensitive electronics such as data servers.
- EB3A, expandable: The FAQ states capacity cannot be expanded with external expansion batteries, and the built-in battery is not user-replaceable.
- EB3A, solar input: Requires solar panels with an open-circuit voltage of 12-28 V.
- RIVER 2, solar input: Maximum solar charging input, at 11-30 V and up to 8 A.
- EB3A, AC input: In Turbo Mode; Standard Mode is 268 W, and the maximum combined input is 430 W with AC and solar charging simultaneously.
- RIVER 2, AC input: Maximum AC wall-charging input.
- EB3A, AC outlets: Two 120 V outlets sharing 600 W in total.
- EB3A, USB-C: A single USB-C port.
- RIVER 2, USB-C: The USB-C port serves as both input and output at up to 60 W.
- EB3A, app: App connection is via Bluetooth only, with a stated range of about 10 m; no Wi-Fi control is mentioned.
- RIVER 2, app: The spec sheet lists app control over Wi-Fi and Bluetooth via the EcoFlow app.
- EB3A, warranty: Stated as 24 months.
- RIVER 2, warranty: Warranty length as stated on the product page.
- EB3A, weight: The spec also gives the metric weight as 4.6 kg.
- RIVER 2, weight: Stated as an approximate net weight.
- EB3A, price: Price shown on the product page with no sale price displayed; the model is marked as discontinued and its purchase options were shown as sold out at the time of capture.
- RIVER 2, price: Price shown on the product page at the time of checking; no separate list or sale price was displayed.
The same specs, normalized
Ratios, so the bigger unit does not win by default.
| Measure | EB3A | RIVER 2 |
|---|---|---|
| Cost per watt-hour | $0.81/Wh (within 3%) | $0.82/Wh (within 3%) |
| Watt-hours per pound | 26.5 Wh/lb | 33.2 Wh/lb ✓ |
| Surge headroom | 2.00× | 2.00× |
| Recharge rate | ≥3.4 Wh/min | 4.3 Wh/min |
| Rated cycle life | 2,500 | 3,000 ✓ |
| Continuous watts per dollar | 2.74 W/$ ✓ | 1.44 W/$ |
Definitions and direction of each ratio: How we verify.
What each one runs, for how long
| Appliance | EB3A | RIVER 2 |
|---|---|---|
| Full-size refrigerator 150 W, 900 W start, 35% duty · eff. 85%–90% |
4.4–4.6 hr | Unlikely to start |
| Mini fridge 70 W, 400 W start, 30% duty · eff. 80%–87% / 85%–90% |
10–11 hr | 10–11 hr |
| CPAP without humidifier 40 W · eff. 80%–87% |
5.4–5.8 hr | 5.1–5.6 hr |
| CPAP with heated humidifier 95 W · eff. 80%–87% / 85%–90% |
2.3–2.5 hr | 2.3–2.4 hr |
| Gas furnace blower 400 W, 1600 W start, 40% duty · eff. 85%–90% |
Unlikely to start | Will not run |
| 1/3 hp sump pump 500 W, 1800 W start, 15% duty · eff. 82%–88% |
Unlikely to start | Will not run |
| Router and modem 20 W · eff. 70%–87% |
9.4–11.7 hr | 9.0–11.1 hr |
| Laptop 60 W · eff. 80%–87% / 85%–90% |
3.6–3.9 hr | 3.6–3.8 hr |
| 1500W space heater 1500 W |
Will not run | Will not run |
Calculated, not measured: hours = rated Wh × efficiency ÷ (appliance W × duty); assumptions on How we verify. “Unlikely to start”: start-up surge exceeds the stated surge rating.
What the differences mean
Weight for the capacity. The RIVER 2 carries 33.2 Wh/lb against 26.5 Wh/lb for the EB3A. Both are one-hand units; the difference matters if the unit moves between car, porch and basement.
Cycle rating. The RIVER 2 is rated for 3,000 cycles against 2,500 for the EB3A, both to the same remaining-capacity threshold — otherwise we would not compare them. At one full cycle a week the difference is measured in years, not months; at occasional outage use neither limit is reached.
Output for the money. 2.74 W/$ on the EB3A against 1.44 W/$ on the RIVER 2: this is the ratio to read if your outage plan is one big appliance, not many small ones.
Which one, and for whom
On normalized measures the RIVER 2 leads on watt-hours per pound (33.2 Wh/lb vs 26.5 Wh/lb) and rated cycle life (3,000 vs 2,500). The EB3A answers on continuous watts per dollar (2.74 W/$ vs 1.44 W/$). The deciding figure is the one your own outage will test first:
- CPAP overnight. Switchover: EB3A no UPS figure stated, RIVER 2 30 ms. A 40 W CPAP runs roughly 5.4–5.8 hr on the EB3A and 5.1–5.6 hr on the RIVER 2. Neither covers a full night (8 hr) without a humidifier at this capacity, so here the hours decide, not switchover.
- Keeping a refrigerator cold. The compressor has to start before hours matter. The EB3A states a 1,200 W surge rating; the RIVER 2 states a 600 W surge rating. A full-size refrigerator needs about 900 W to start.
- A multi-day outage with a generator or solar to recharge from. Full recharge: EB3A a stated 78–108 min range, RIVER 2 60 min. The faster unit spends less generator fuel per charge.
Check the current price
Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.
We do not link the EB3A: we could not confirm a listing for the exact base unit, and we do not link a guess.
Related reading
A 256–268.8 Wh battery cannot do what a gasoline generator does — neither unit’s continuous rating covers a 1,500 W space heater (see the runtime table) — but it also cannot poison a household. How often gasoline generators kill indoors — and how the official count keeps being revised — is documented in our CPSC revision matrix, and this page puts every verified unit on the same refrigerator scenario.
Other comparisons with these models
Ordering before a storm? Check the arrival date at checkout — a unit that ships tomorrow can beat a better one that ships next week. Amazon Prime includes fast delivery on eligible items and starts with a free trial; we earn a commission if you join.
Sources and method
- Bluetti EB3A: manufacturer product page, checked 2026-08-24.
- EcoFlow RIVER 2: manufacturer product page, checked 2026-08-24.
Published specifications only; no bench tests. Method: How we verify. More: Comparisons.