Drawing · 9.8 × 5.5 × 5.2 in · 6.3 lb
- Capacity
- 210 Wh
- AC output
- 300 W
- Surge
- 600 W
- Solar input
- 100 W
- Weight
- 6.3 lb
Maker price$399 at EcoFlow, checked Oct 11, 2026
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EcoFlow · Compact (under 600 Wh)
EcoFlow RIVER 2 (240)
A compact unit, 243 Wh, 300 W (600 surge), 7.7 lb, $209 at EcoFlow, checked Oct 11, 2026 ($0.86 per Wh). By our sizing it holds phones and USB lights, but none of the six uses we size.
From the maker's published figures and our own calculations; we have not tested it ourselves.
Estimated runtimehours24-hour dial
Rated capacity
243 Wh
243 Wh × 0.85 ÷ device watts. An estimate, not a measured test. Startup and connections need checking.
Drawing · 9.6 × 8.5 × 5.7 in · 7.7 lb
EcoFlow RIVER 2 (240) $209 at EcoFlow, checked Oct 11, 2026
Capacity 243Wh
AC output 300W
Surge 600W
Chemistry LiFePO4
Rated cycles 3,000 to 80%
Weight 7.7lb
Max solar input 110W
Price per Wh $0.86
Should you buy it?
Not for: a day of home backup (too little capacity: needs 2,323 Wh and 1,351 W at startup); a night of CPAP (too little capacity: needs 599 Wh and 104 W at startup); two nights of camping (too little capacity: needs 2,066 Wh and 157 W at startup); a day in an RV (too little capacity: needs 648 Wh and 156 W at startup); a working day in a van (too little capacity: needs 1,674 Wh and 189 W at startup); a laptop and two phones (too little capacity: needs 396 Wh and 60 W at startup).
Choose it for a 6.3 lb lighter carry: $60 less than the Pecron E500LFP.
Choose the Pecron E500LFP instead if you want the most battery for the money: $0.47 per Wh against $0.86, $60 more, 6.3 lb heavier.
About 207 Wh reaches the AC outlets after the 0.85 loss allowance (an estimate, not a measurement). At $0.86 per watt-hour, compare its cost with the charging speed and carry weight you need. It stores 31.6 Wh per pound. We list 28 other models in its size class; the four nearest in capacity are compared below.
What it runs, and for how long
Hours = capacity × 0.85 ÷ device watts, with the draws from the device table.
| Device | Draw W | Hours | Output and surge cover it? |
|---|---|---|---|
| CPAP machine (no heated humidifier) | 45 | 4.6 | yes |
| CPAP machine (with heated humidifier) | 53 | 3.9 | yes |
| Refrigerator (full-size, ENERGY STAR, ~18 cu ft top freezer) (average draw, compressor cycling) | 41 | 5 | no |
| Laptop (MacBook Air, charging) (charger rating, continuous) | 40 | 5.2 | yes |
| Wi-Fi router | 24 | 8.6 | yes |
| Starlink Mini (router built in) | 33 | 6.4 | yes |
| TV, 50-inch LED / Crystal UHD | 89 | 2.3 | yes |
| Camp LED light set (4 chainable lights) | 6 | 32.8 | yes |
"Yes" means its continuous output covers the draw and its surge rating covers the startup figure we use, by arithmetic on ratings, not a test. Startup figures: the CPAP with its humidifier, 104 W at startup, from ResMed's peak figure; the refrigerator, 1,300 W startup allowance, from a larger 27 cu ft Whirlpool's tech sheet. Your own appliance's label or manual has its own.
Sockets and size
- AC outlets: count not published, 300 W in total, 600 W surge
- One USB-C port, up to 60 W from one port
- USB-A ports: count not published
- One 12 V outlet
How many of each socket and their limits, from the maker's spec sheet; it does not say where each one sits on the unit. It weighs 7.7 lb.
At a glance
How it compares with the other 28 compact models, on the makers' figures. We don't boil it down to one score; see how we pick.
| What it can power | Covers none of the uses we size. Output and surge cover 13 of the 17 devices in our list, on the startup figures we use |
|---|---|
| Price per Wh | $0.86 per Wh, 13th lowest of 29 compact units |
| Portability | 7.7 lb, 9th lightest of 28 compact units |
| Recharge speed | 110 W of solar input: at least 2.2 hours of full sun at that limit to refill (an ideal minimum, not clock time); 360 W from the wall |
| Chemistry and cycle life | LiFePO4, rated 3,000 cycles to 80% |
| Expandability | No expansion stated |
Full spec sheet
| Capacity | 243 Wh |
|---|---|
| Chemistry | LiFePO4 |
| Rated cycle life | 3,000 to 80% |
| Expandable | – |
| Continuous AC output | 300 W |
|---|---|
| Surge (peak) output | 600 W |
| AC outlets | – |
| USB-C ports / highest output | 1 / 60 W |
| USB-A ports | – |
| 12 V outputs | 1 |
| Wireless charging pad | – |
| UPS / EPS switchover | – |
| Max AC input | 360 W |
|---|---|
| Wall recharge time | – |
| Max solar input | 110 W |
| Stated solar recharge time | – |
| App control | yes |
| Weight | 7.7 lb (3.5 kg) |
|---|---|
| Dimensions | 9.6 x 8.5 x 5.7 in (244 x 216 x 145 mm) |
| Wh per lb | 31.6 |
| Release year | – |
| Warranty | – |
| List price | – |
|---|---|
| Store price | $209 at EcoFlow, checked Oct 11, 2026 |
| Price per Wh | $0.86 |
Before using the battery's cycle rating to judge value, read what LiFePO4 versus NMC means for lifespan and weight.
What the output figures mean for your devices: running and surge watts, and which units can stand in for a UPS.
Which maker panels its solar input takes, how to wire them and the hours of sun to refill it: the RIVER 2 (240) solar setup.
Alternatives at this size
Listed smallest to largest by capacity; this unit is among them.
Select up to three models to compare.
Drawing · 9.6 × 8.5 × 5.7 in · 7.7 lb
- Capacity
- 243 Wh
- AC output
- 300 W
- Surge
- 600 W
- Solar input
- 110 W
- Weight
- 7.7 lb
Maker price$209 at EcoFlow, checked Oct 11, 2026
Drawing · 10.2 × 6.9 × 7.9 in · 8.8 lb
- Capacity
- 256 Wh
- AC output
- 400 W
- Surge
- Not published
- Solar input
- 120 W
- Weight
- 8.8 lb
Maker price$169 $299 at Aferiy, checked Oct 11, 2026
Drawing · 9.1 × 6 × 6.6 in · 7.9 lb
- Capacity
- 256 Wh
- AC output
- 300 W
- Surge
- 600 W
- Solar input
- 100 W
- Weight
- 7.9 lb
Maker price$249 at Jackery, sold out when checked Oct 11, 2026
Drawing · 9.2 × 9.1 × 5.8 in · 10.4 lb
- Capacity
- 286 Wh
- AC output
- 600 W
- Surge
- 1,200 W
- Solar input
- 220 W
- Weight
- 10.4 lb
Maker price$259 $299 at EcoFlow, checked Oct 9, 2026
No models match these filters.
| Model | Wh | Output W (surge) | lb | Solar input W | Chemistry | Cycles | Price at maker $ | Price per Wh | Store |
|---|---|---|---|---|---|---|---|---|---|
| EcoFlow RIVER mini Wireless | 210 | 300 W (600 surge) | 6.3 | 100 | NMC | 500 to 80% | $399checked Oct 11, 2026 | $1.90 | See it at EcoFlow |
| EcoFlow RIVER 2 (240) | 243 | 300 W (600 surge) | 7.7 | 110 | LiFePO4 | 3,000 to 80% | $209checked Oct 11, 2026 | $0.86 | See it at EcoFlow |
| Aferiy P040 | 256 | 400 W | 8.8 | 120 | LiFePO4 | 4,000 to 85% | $169 | $0.66 | Check price on AmazonAmazon's price may differ See it at Aferiy |
| Jackery Explorer 240 v2 | 256 | 300 W (600 surge) | 7.9 | 100 | LiFePO4 | 3,000 to 80% | $249sold out when checked Oct 11, 2026 | $0.97 | See it at Jackery |
| EcoFlow RIVER 3 Plus | 286 | 600 W (1,200 surge) | 10.4 | 220 | LiFePO4 | 3,000 to 80% | $259 | $0.91 | See it at EcoFlow Check price on AmazonAmazon's price may differ |
See it at EcoFlow Every EcoFlow model we cover Does it hold enough for your devices?
Before connecting panels, compare your array's cold-morning open-circuit voltage and short-circuit current with this model's solar-input limits in its manual.
Sources
- Specs: EcoFlow product page
- Price: EcoFlow product page, checked Oct 11, 2026
- How the figures and picks are made