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Source-linked model

GRECELL 4000W Runtime Calculator

Use this source-linked record to estimate runtime from tracked capacity, output, charging, and weight fields. Unknown specs stay unknown until an official or manufacturer-grade source confirms them.

Capacity5040 Wh
AC output4,000 W
Surge7,000 W
ChemistryLiFePO4
Confidenceverified
Checked2026-06-29
Battery capacity5040 Wh
Usable capacityunknown
Battery chemistryLiFePO4
AC output4,000 W
Surge output7,000 W
DC output360 W
USB-C output60 W
Solar input2,100 W
Weight51 kg
Confidenceverified
Last verified2026-06-29

Runtime Starting Points

These are formula estimates using the tracked capacity, a 10% reserve, and each scenario's default wattage and duty cycle. They are planning starters, not measured runtimes.

ScenarioDefault loadEstimateScenario confidence
Full-size refrigerator500 W at 33%23h 22mestimated
CPAP without heated humidifier40 W at 100%4d 0hestimated
Starlink Mini32 W at 100%5d 7hestimated
Wi-Fi router12 W at 100%13d 20hestimated
Laptop60 W at 100%2d 18hestimated

Open calculator with this station

Good fit when

  • Capacity is in a larger outage/RV class, so the useful question is usually output limits, recharge speed, and weight rather than watt-hours alone.
  • Tracked AC output is high enough for many household plug-in loads, but surge still needs a separate check.
  • USB-C output is tracked at laptop-class power, useful for direct DC charging when the device supports it.
  • Tracked solar input is 2,100 W before panel, weather, angle, and controller losses.

Watch out for

  • Surge output is tracked, but device startup behavior should still be checked against the actual load.
  • Still unknown in the source-backed record: usable capacity.
  • Tracked weight is in a heavier class; plan where it will live before treating it as a grab-and-go station.

Related GRECELL Records

Nearby source-linked models from the same brand help you compare capacity, output, and unknown fields without leaving the data set.

2400W

1,843.2 Wh, 2,400 W AC output, confidence: verified.

2200W

1,126.4 Wh, 2,200 W AC output, confidence: verified.

T-1000

999 Wh, 1,000 W AC output, confidence: verified.

Sources