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Anker SOLIX C300 Runtime Calculator
Quick answer: the Anker SOLIX C300 stores 288 Wh and delivers up to 300 W of continuous AC power. Under this site's planning assumptions (85% inverter efficiency, 10% reserve), a steady 100 W AC load runs for roughly 2.2 hours. Last source check: 2026-08-21. This is an estimate, not a guarantee.

| Battery capacity | 288 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| AC output | 300 W |
| Surge output | unknown |
| DC output | 120 W |
| USB-C output | 140 W |
| Solar input | 100 W |
| Weight | 4.13 kg |
| Confidence | Estimated |
| Lifecycle status | Unknown |
| Source region | Global/general sources |
| Last verified | 2026-08-21 |
Surge output stays unknown because the published 600W ceiling is SurgePad for resistive high-watt loads, not universal motor-start surge support. DC output stores the 120W car-socket ceiling, not the separate 360W cross-port combined-output total.
Runtime estimate
Formula starting points use each scenario’s default watts, duty cycle and output path, with 10% reserve or 15% for CPAP. Linked detail pages use the same inputs. Hours apply only if the device can run and start; they are not measured runtimes.
| Device scenario | Planning default | Estimated runtime | Device scenario: Confidence | Models |
|---|---|---|---|---|
| Full-size refrigerator | 500 W · 33% · AC inverter · Reserve: 10% | 1h 20m Exceeds a tracked power limit — do not rely on these hours | Estimated | Open estimate |
| CPAP without heated humidifier | 40 W · 100% · AC inverter · Reserve: 15% | 5h 12m Within the tracked power limits; compatibility still needs checking | Estimated | Open estimate |
| Starlink Mini | 32 W · 100% · USB-C PD · Reserve: 10% | 7h 27m Within the tracked power limits; compatibility still needs checking | Estimated | Open estimate |
| Wi-Fi router | 12 W · 100% · AC inverter · Reserve: 10% | 19h 0m Within the tracked power limits; compatibility still needs checking | Estimated | Open estimate |
| LED TV | 100 W · 100% · AC inverter · Reserve: 10% | 2h 12m Within the tracked power limits; compatibility still needs checking | Estimated | Open estimate |
Runtime calculator
Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
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Estimated runtime
Within the tracked power limits; compatibility still needs checking
This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
3h 40mEstimated runtime: 3h 40mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.
These are calculated sensitivity cases, not a statistical confidence interval. Conservative uses lower efficiency and battery health, more reserve/temperature loss and higher load; optimistic changes these assumptions in the opposite direction.
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
- Within the tracked power limits; compatibility still needs checking
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
- Rated battery
- 288 Wh
- Usable energy
- 220 Wh
- 288 Wh x 85% x 90% x 100% x 100%
- Running watts
- 60 W
- Average load
- 60 W
- Max surge
- n/a
- Fixed station overhead
- Unknown (not included)
- 60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
- Estimated runtime
- 3h 40m
- 220 Wh / 60 W = 3h 40m
- Output path
- AC inverter
- Efficiency (%)
- 85
- Reserve kept unused (%)
- 10
- Battery health (%)
- 100
- Cold weather loss (%)
- 0
This link contains the numeric values you entered, but not custom load names.
WattRunTime.com
WattRunTime estimate
Estimated runtime
3h 40mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.Runtime range
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Assumptions
- 288 Wh nominal battery capacity
- AC inverter output path
- 85% conversion efficiency
- 10% reserve kept unused
- 60 W average load from 1 load
- 100% battery health
- 0% temperature loss
- Fixed station overhead unknown; not included
Warnings
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
- Within the tracked power limits; compatibility still needs checking
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Planning notes
- Capacity class: 288 Wh. Size the battery for your measured average load and required hours, including reserve.
- Tracked output: 300 W. Compare both running demand and startup demand before using any runtime estimate.
- Solar input limit: 100 W. Actual refill depends on panel voltage/current compatibility, sunlight, angle and charging losses.
Known data gaps
- Unverified or missing specifications remain visible. The confidence label describes the station record, not a tested runtime or approval for emergency use.
- Weight: 4.13 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
- unknown: Surge output
Models: Anker SOLIX
Compare nearby capacity records from the same brand, then check output, weight and missing fields. A larger battery does not establish device compatibility.
Anker SOLIX C300 DC
288 Wh · AC output: unknown · Confidence: Verified
Anker SOLIX 521 PowerHouse
256 Wh · AC output: 200 W · Confidence: Estimated
Anker SOLIX C200 DC
192 Wh · AC output: unknown · Confidence: Verified
Specification comparison
Use these as planning shortcuts, then confirm the full table and sources.
EcoFlow RIVER 3 Plus vs Anker SOLIX C300
286 Wh / 288 Wh · AC output: 600 W / 300 W
Anker SOLIX C300 vs EcoFlow RIVER 3
288 Wh / 245 Wh · AC output: 300 W / 300 W
Sources
- Anker SOLIX C300 specifications (Official; checked 2026-08-21)
- Anker SOLIX C300 user manual (Official; checked 2026-08-21)
- Anker SOLIX C300 support specifications (Official; checked 2026-08-21)
