EcoFlow RIVER 3 Plus
#8 in SmallFull review
A compact LiFePO4 station for camping, laptop work and router/modem UPS duty, with the option to add capacity later.
Amazon $299$299
The EcoFlow RIVER 3 Plus is the better portable power station overall, rated 3.7 to 3.5. The EcoFlow RIVER 3 Plus leads on AC output, features and solar input. The Anker SOLIX C300 DC wins on value and portability. The Anker SOLIX C300 DC costs $109.01 less ($189.99 vs $299).
Anker SOLIX C300 DC
#16 in SmallFull review
For travelers and campers who only need to charge USB-C and 12V devices and want the lightest 288 Wh option.
Amazon $189.99 Anker$189.99
Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the EcoFlow RIVER 3 Plus for AC output (600 W continuous AC vs No AC outlets (DC only)), features (UPS (10 ms), expandable, 100 W USB-C, app vs 140 W USB-C) and solar input (220 W max solar input vs 100 W max solar input).
- Choose the Anker SOLIX C300 DC for value ($0.66 per rated Wh vs $1.05 per rated Wh) and portability (103 Wh per kg (6.2 lb (2.8 kg)) vs 61 Wh per kg (10.4 lb (4.7 kg))).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every small portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | EcoFlow RIVER 3 Plus | Anker SOLIX C300 DC |
|---|---|---|
| Overall rating | 3.7/5 | 3.5/5 |
| Value 25% | 48 $1.05 per rated Wh | 82 $0.66 per rated Wh |
| Tested capacity 15% | 28 76% of rated capacity delivered (1 test) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 91 LiFePO4, 3,000 cycles, 5-year warranty | 81 LiFePO4, 3,000 cycles, 3-year warranty |
| AC output 15% | 83 600 W continuous AC | 0 No AC outlets (DC only) |
| Charging speed 10% | 95 0-100% on AC in 1 h | 50 full AC charge time not published (neutral score used) |
| Portability 10% | 28 61 Wh per kg (10.4 lb (4.7 kg)) | 100 103 Wh per kg (6.2 lb (2.8 kg)) |
| Solar input 5% | 73 220 W max solar input | 23 100 W max solar input |
| Features 5% | 100 UPS (10 ms), expandable, 100 W USB-C, app | 20 140 W USB-C |
Independent capacity tests
EcoFlow RIVER 3 Plus
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| CNET | 218 Wh | 76.2% | 480W load logged with HOBOware; round-trip efficiency 72.41%; recharge from empty 1 h 12 min. |
Anker SOLIX C300 DC
No independent test published yet.
Specifications
| EcoFlow RIVER 3 Plus | Anker SOLIX C300 DC | |
|---|---|---|
| Battery | ||
| Rated capacity | 286 Wh | 288 Wh |
| Tested usable capacity | 218 Wh (76%) | - |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 3,000 to 80% | 3,000 to 80% |
| Expandable | Yes, up to 858 Wh | No |
| Output | ||
| AC output | 600 W (1,200 W surge) | None (DC only) |
| Boost mode (resistive loads) | 1,200 W | - |
| AC outlets | 3 total | 0 |
| 120V 15A outlets (NEMA 5-15R) | 3 | - |
| AC waveform | Pure sine wave | - |
| USB-C ports | 1 (100 W) | 4 (up to 140 W each) |
| USB-A ports | 2 | 2 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 0 | 0 |
| UPS / pass-through | Yes (10 ms switchover) | - |
| Charging | ||
| AC charging | 380 W | - |
| Full AC charge time | 1 h | - |
| Max solar input | 220 W | 100 W |
| Solar input voltage | - | 11-28V |
| Car charging | 220 W | - |
| Build | ||
| Weight | 10.4 lb (4.7 kg) | 6.2 lb (2.8 kg) |
| Dimensions | 9.2 x 9.1 x 5.8 in | 4.89 x 4.72 x 7.87 in |
| App | Wi-Fi + Bluetooth | - |
| Warranty | 5 years | 3 years |
| Released | 2025-03 | 2024-08 |