Capacity
Higher is better | Scale max: 512 Wh | RIVER 2 Max leads
SOLIX C300 288 Wh
RIVER 2 Max 512 Wh
RIVER 2 Max: +224 Wh (+77.8%).
SOLIX C300 vs RIVER 2 Max
300W
Running power
500W
288 Wh
Battery
512 Wh
9 lbs
Weight
13.4 lbs
At a Glance
This comparison targets buyers shopping for a compact LFP power station under 15 lbs for light camping, travel, or occasional home backup. The RIVER 2 Max pulls ahead on nearly every core spec: 512 Wh of capacity versus 288 Wh on the SOLIX C300, 500W of running power versus 300W, and a 1000W surge rating that handles motor-driven startups the C300 simply cannot match.
In device compatibility testing across 53 appliances, the RIVER 2 Max powered 20 while the C300 managed 15, with every device the C300 ran also covered by the RIVER 2 Max. Solar charging is faster on the EcoFlow unit too, topping out at 220W input for a 3.3-hour fill compared to 100W and 4.1 hours on the Anker.
The tradeoff is weight and size: the C300 checks in at 9 lbs, saving you over 4 lbs of pack weight, and it includes UPS functionality with a 10ms switchover that the RIVER 2 Max lacks.
Overall Winner
RIVER 2 Max
Powers 20 of 53 tested devices vs 15 for SOLIX C300
Home backup: RIVER 2 Max RV / mobile: RIVER 2 Max Solar: RIVER 2 Max
Choose SOLIX C300 if...
- + Portability matters for your setup
- + Built-in UPS with 10ms switchover
Choose RIVER 2 Max if...
- + You want faster solar recharging
- + You want broader device compatibility
- + You need all-day runtime headroom
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: 500 W | RIVER 2 Max leads
SOLIX C300 300 W
RIVER 2 Max 500 W
RIVER 2 Max: +200 W (+66.7%).
Surge Power
Higher is better | Scale max: 1,000 W | RIVER 2 Max leads
SOLIX C300 300 W
RIVER 2 Max 1,000 W
RIVER 2 Max: +700 W (+233.3%).
Weight
Lower is better | Scale best: 9.0 lbs | SOLIX C300 leads
SOLIX C300 9.0 lbs (4.1 kg)
RIVER 2 Max 13.4 lbs (6.1 kg)
SOLIX C300: -4.4 lbs (32.8% lighter).
Battery Life
Higher is better | Scale max: 3,000 cycles | Tie
SOLIX C300 3,000 cycles
RIVER 2 Max 3,000 cycles
Delta: Tie (0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 5 show a different result between these two stations.
Both can run: 15 · Differences: 9% (5/53) · Neither can run: 33
Only RIVER 2 Max can run 5
Electric Wheelchair Charger SOLIX C300: Running + surge shortfall
Portable Oxygen Concentrator SOLIX C300: Running + surge shortfall
Full-Size Freezer (15-17 Cu. Ft.) SOLIX C300: Needs soft-start
French Door Refrigerator SOLIX C300: Needs soft-start
Laptop SOLIX C300: Running + surge shortfall
Neither can run · 33 devices
These devices exceed both stations on running power and surge.
Sump Pump (1/2 HP)
Electric Clothes Dryer
Dishwasher
Washing Machine
Laser Printer
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
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)
Full Specs Comparison
| Spec | SOLIX C300 | RIVER 2 Max |
|---|---|---|
| Capacity | 288 Wh | 512 Wh ✓ |
| Running Power | 300 W | 500 W ✓ |
| Surge Power | 300 W | 1,000 W ✓ |
| Weight | 9.0 lbs (4.1 kg) ✓ | 13.4 lbs (6.1 kg) |
| Energy Density | 70.2 Wh/kg | 83.9 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 2 Max
Faster Max solar input 220 W
Connector XT60i
Full charge time ~3.3h
Compatible panels 17/20
MPPT: 11-50V
Charge speed comparison
Longer bar = faster charge (inverted scale)
Device Compatibility
All tested devices grouped by category. Click a category to expand.
SOLIX C300RIVER 2 Max
Emergency(2)
0/21/2
0/2
1/2
| Device | SOLIX C300 | Runtime | RIVER 2 Max | Runtime |
|---|---|---|---|---|
| Full-Size Freezer (15-17 Cu. Ft.) | Soft Start | 1.3h | Safe | 2.2h |
| 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 2 Max | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 2.4h | Safe | 4.3h |
| 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 2 Max | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Tight | 1.1h | Safe | 2h |
| 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 2 Max | 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 | Safe | 1.2h |
| Toaster Oven | Fail | N/A | Fail | N/A |
Large Appliances(4)
0/41/4
0/4
1/4
| Device | SOLIX C300 | Runtime | RIVER 2 Max | 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 | 1.7h |
| Washing Machine | Fail | N/A | Fail | N/A |
Medical(4)
2/44/4
2/4
4/4
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
The SOLIX C300 makes sense for buyers who prioritize portability above all else or need a lightweight UPS for a modem or router during brief outages. The RIVER 2 Max suits anyone who needs more capacity, higher output, and broader device coverage for car camping, tailgating, or powering small kitchen appliances. With a score of 40 versus 28 and five additional devices supported, the RIVER 2 Max is the stronger buy for most use cases.
SOLIX C300 vs RIVER 2 Max FAQ
Q Which is better for home backup, SOLIX C300 or RIVER 2 Max?
RIVER 2 Max 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 2 Max?
RIVER 2 Max has higher battery capacity (512 Wh), which generally supports longer runtime on the same load.
Q Which charges faster with solar panels?
RIVER 2 Max has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, SOLIX C300 or RIVER 2 Max?
SOLIX C300 is lighter at 9 lbs vs 13.4 lbs. SOLIX C300 is rated ultralight for portability.
Q How many devices can each power station run?
RIVER 2 Max powers 20 of 53 tested devices, compared to 15 for SOLIX C300.
Q Does SOLIX C300 or RIVER 2 Max 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.