Capacity
Higher is better | Scale max: 288 Wh | SOLIX C300 leads
SOLIX C300 288 Wh
RIVER 3 245 Wh
SOLIX C300: +43 Wh (+17.6%).
SOLIX C300 vs RIVER 3
300W
Running power
300W
288 Wh
Battery
245 Wh
9 lbs
Weight
7.7 lbs
At a Glance
This comparison targets buyers shopping for a compact, sub-10 lb power station for light-duty use such as charging phones, laptops, and small appliances. The RIVER 3 edges ahead on device compatibility, powering 17 out of 53 tested devices versus 15 for the SOLIX C300, and it earns a higher overall score of 33 to 28.
A 600W surge rating gives the RIVER 3 a real advantage when motors or compressors kick on, doubling the C300's 300W surge cap. Solar recharge is faster too: 3.2 hours at up to 110W input, compared to 4.1 hours at 100W for the Anker unit.
The C300 fights back with a larger 288 Wh battery (vs. 245 Wh) and a 10ms UPS function that the RIVER 3 lacks entirely, a genuine plus for anyone who needs basic home-backup coverage during brief outages. At 9 lbs the C300 is slightly heavier, though both units remain easy to carry.
Overall Winner
RIVER 3
Powers 17 of 53 tested devices vs 15 for SOLIX C300
Home backup: SOLIX C300 RV / mobile: Tie Solar: RIVER 3
RIVER 3 wins overall, but the best pick depends on your use case.
Choose SOLIX C300 if...
- + Built-in UPS with 10ms switchover
Choose RIVER 3 if...
- + Portability matters for your setup
- + You want faster solar recharging
- + You want broader device compatibility
Spec Snapshot
Absolute values shown. Bars are scaled within this comparison for readability.
Each metric is independent. Bar lengths are not comparable across different compare pages.
Running Power
Higher is better | Scale max: 300 W | Tie
SOLIX C300 300 W
RIVER 3 300 W
Delta: Tie (0%).
Surge Power
Higher is better | Scale max: 600 W | RIVER 3 leads
SOLIX C300 300 W
RIVER 3 600 W
RIVER 3: +300 W (+100.0%).
Weight
Lower is better | Scale best: 7.7 lbs | RIVER 3 leads
SOLIX C300 9.0 lbs (4.1 kg)
RIVER 3 7.7 lbs (3.5 kg)
RIVER 3: -1.3 lbs (14.6% lighter).
Battery Life
Higher is better | Scale max: 3,000 cycles | Tie
SOLIX C300 3,000 cycles
RIVER 3 3,000 cycles
Delta: Tie (0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 2 show a different result between these two stations.
Both can run: 15 · Differences: 4% (2/53) · Neither can run: 36
Neither can run · 36 devices
These devices exceed both stations on running power and surge.
Sump Pump (1/2 HP)
Electric Clothes Dryer
Dishwasher
Washing Machine
Desktop PC (Gaming/Workstation)
EV Charger (Level 1, 120V)
Central AC (3-Ton)
Dehumidifier (70 Pint)
Gas Furnace Fan (Blower)
Portable AC (12,000 BTU)
Space Heater (1,500W)
Window AC (8,000 BTU)
Electric Water Heater (50 Gal)
Well Pump (1 HP)
2-Slice Bread Toaster
Coffee Maker
Digital Air Fryer
Electric Skillet
Electric Stove (Single Burner)
Electric Water Kettle
Instant Pot (6 Qt)
Microwave Oven (1000W)
Rice Cooker
Toaster Oven
Electric Wheelchair Charger
Portable Oxygen Concentrator
Portable Ice Maker (Countertop)
RV Rooftop AC (13,500 BTU)
Professional Hair Dryer
Circular Saw (Corded)
Corded Drill / Hammer Drill
Electric Chainsaw (14-inch)
Pancake Air Compressor (6-Gallon)
Shop Vac (Wet/Dry, 5-6 HP Peak)
Laptop
Laser Printer
Full Specs Comparison
| Spec | SOLIX C300 | RIVER 3 |
|---|---|---|
| Capacity | 288 Wh ✓ | 245 Wh |
| Running Power | 300 W | 300 W |
| Surge Power | 300 W | 600 W ✓ |
| Weight | 9.0 lbs (4.1 kg) | 7.7 lbs (3.5 kg) ✓ |
| Energy Density | 70.2 Wh/kg ✓ | 70.0 Wh/kg |
| Portability Tier | ultralight | ultralight |
| Chemistry | LFP | LFP |
| Cycle Life | 3,000 | 3,000 |
| Expandable | No | No |
| UPS | Yes (10 ms) | No |
| AC Voltage | 120V | 120V |
Solar Charging
Best-case charging profile using compatible solar panels.
SOLIX C300
Max solar input 100 W
Connector XT60
Full charge time ~4.1h
Compatible panels 6/20
MPPT: 11-28V
RIVER 3
Faster Max solar input 110 W
Connector XT60i
Full charge time ~3.2h
Compatible panels 12/20
MPPT: 11-30V
Charge speed comparison
Longer bar = faster charge (inverted scale)
Device Compatibility
All tested devices grouped by category. Click a category to expand.
SOLIX C300RIVER 3
Emergency(2)
0/21/2
0/2
1/2
| Device | SOLIX C300 | Runtime | RIVER 3 | Runtime |
|---|---|---|---|---|
| Full-Size Freezer (15-17 Cu. Ft.) | Soft Start | 1.3h | Safe | 1.1h |
| Sump Pump (1/2 HP) | Fail | N/A | Fail | N/A |
Entertainment(2)
1/21/2
1/2
1/2
EV & Transportation(2)
1/21/2
1/2
1/2
Heating & Cooling(7)
1/71/7
1/7
1/7
| Device | SOLIX C300 | Runtime | RIVER 3 | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 2.4h | Safe | 2.1h |
| Central AC (3-Ton) | Voltage Fail | N/A | Voltage Fail | N/A |
| Dehumidifier (70 Pint) | Fail | N/A | Fail | N/A |
| Gas Furnace Fan (Blower) | Fail | N/A | Fail | N/A |
| Portable AC (12,000 BTU) | Fail | N/A | Fail | N/A |
| Space Heater (1,500W) | Fail | N/A | Fail | N/A |
| Window AC (8,000 BTU) | Fail | N/A | Fail | N/A |
Home Infrastructure(3)
1/31/3
1/3
1/3
| Device | SOLIX C300 | Runtime | RIVER 3 | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Tight | 1.1h | Safe | 1h |
| Well Pump (1 HP) | Voltage Fail | N/A | Voltage Fail | N/A |
Kitchen Appliances(11)
1/111/11
1/11
1/11
| Device | SOLIX C300 | Runtime | RIVER 3 | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Fail | N/A | Fail | N/A |
| Coffee Maker | Fail | N/A | Fail | N/A |
| Digital Air Fryer | Fail | N/A | Fail | N/A |
| Electric Skillet | Fail | N/A | Fail | N/A |
| Electric Stove (Single Burner) | Fail | N/A | Fail | N/A |
| Electric Water Kettle | Fail | N/A | Fail | N/A |
| Instant Pot (6 Qt) | Fail | N/A | Fail | N/A |
| Microwave Oven (1000W) | Fail | N/A | Fail | N/A |
| Rice Cooker | Fail | N/A | Fail | N/A |
| Slow Cooker | Tight | 0.7h | Tight | 0.6h |
| Toaster Oven | Fail | N/A | Fail | N/A |
Large Appliances(4)
0/41/4
0/4
1/4
| Device | SOLIX C300 | Runtime | RIVER 3 | Runtime |
|---|---|---|---|---|
| Dishwasher | Fail | N/A | Fail | N/A |
| Electric Clothes Dryer | Voltage Fail | N/A | Voltage Fail | N/A |
| French Door Refrigerator | Soft Start | 1h | Safe | 0.8h |
| Washing Machine | Fail | N/A | Fail | N/A |
Medical(4)
2/42/4
2/4
2/4
Outdoor & RV(6)
4/64/6
4/6
4/6
Personal Care(2)
1/21/2
1/2
1/2
Power Tools(5)
0/50/5
0/5
0/5
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The Bottom Line
Pick the SOLIX C300 if you need its UPS capability and the extra 43 Wh of capacity for overnight backup or extended off-grid sessions. The RIVER 3 is the better fit for portable solar setups and situations where surge-hungry devices might be in the mix, thanks to its 600W surge and faster solar charging. Overall, the EcoFlow RIVER 3 is the recommended choice here, offering broader device coverage, a lighter build, and stronger peak performance in a similar package.
SOLIX C300 vs RIVER 3 FAQ
Q Which is better for home backup, SOLIX C300 or RIVER 3?
RIVER 3 is the stronger overall choice in this matchup based on weighted compatibility across 53 tested devices.
Q Which has longer runtime, SOLIX C300 or RIVER 3?
SOLIX C300 has higher battery capacity (288 Wh), which generally supports longer runtime on the same load.
Q Which charges faster with solar panels?
RIVER 3 has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, SOLIX C300 or RIVER 3?
RIVER 3 is lighter at 7.7 lbs vs 9 lbs. RIVER 3 is rated ultralight for portability.
Q How many devices can each power station run?
RIVER 3 powers 17 of 53 tested devices, compared to 15 for SOLIX C300.
Q Does SOLIX C300 or RIVER 3 have UPS mode for power outages?
Only SOLIX C300 has UPS (uninterruptible power supply) mode with a 10ms switchover time, which keeps connected devices running during a power outage without interruption.