Menu
GRECELL 4000W Runtime Calculator
Quick answer: the GRECELL 4000W stores 5,040 Wh and delivers up to 4,000 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 38.6 hours. Last source check: 2026-08-20. This is an estimate, not a guarantee.
Battery capacity5,040 Wh
AC output4,000 W
Surge output7,000 W
Battery chemistryLiFePO4
ConfidenceVerified
Source regionGlobal/general sources
checked2026-08-20
Swipe table sideways
| Battery capacity | 5,040 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| AC output | 4,000 W |
| Surge output | 7,000 W |
| DC output | 360 W |
| USB-C output | 60 W |
| Solar input | 2,100 W |
| Weight | 51 kg |
| Confidence | Verified |
| Lifecycle status | Unknown |
| Source region | Global/general sources |
| Last verified | 2026-08-20 |
Catalog notes (original English)
The DC field follows the specification table's explicit 12V/30A maximum for the DC5521 output bank; it is not a guessed sum of independent ports. The car outlet is separately limited to 12V/10A.
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.
Swipe table sideways
| Device scenario | Planning default | Estimated runtime | Device scenario: Confidence | Models |
|---|---|---|---|---|
| Full-size refrigerator | 500 W · 33% · AC inverter · Reserve: 10% | 23h 22m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| CPAP without heated humidifier | 40 W · 100% · AC inverter · Reserve: 15% | 3d 19h Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| Starlink Mini | 32 W · 100% · USB-C PD · Reserve: 10% | 5d 10h Exceeds a tracked power limit — do not rely on these hours | Estimated | Calculator |
| Wi-Fi router | 12 W · 100% · AC inverter · Reserve: 10% | 13d 20h Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| LED TV | 100 W · 100% · AC inverter · Reserve: 10% | 1d 14h Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
Runtime calculator
Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
Loading calculatorPreparing calculator
This tool didn't load
Something blocked the calculator from starting. Check your connection or reload the page to try again.
Power station model
Battery capacity (Wh): 5040 WhContinuous output rating (W): 4000 WSurge output rating (W): 7000 W
Estimated runtime2d 16h1d 16h – 3d 7hEstimated runtime: 2d 16h, 1d 16h – 3d 7h
Output path
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.
2d 16hEstimated runtime: 2d 16hThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.
Conservative1d 16h
Estimated2d 16h
Optimistic3d 7h
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
- 5040 Wh
- Usable energy
- 3856 Wh
- 5040 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
- 2d 16h
- 3856 Wh / 60 W = 2d 16h
- 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.
Source-Backed Next Steps
Smallest matching record (8h)Jackery Explorer 600 Plus
WattRunTime.com
WattRunTime estimate
Estimated runtime
2d 16hThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.Usable energy3856 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a
Runtime range
Conservative1d 16h
Estimated2d 16h
Optimistic3d 7h
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Usable energy3856 Wh5040 Wh x 85% x 90% x 100% x 100%
Fixed station overheadUnknown (not included)60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
Estimated runtime2d 16h3856 Wh / 60 W = 2d 16h
Assumptions
- 5040 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
Share URL
Planning notes
- Capacity class: 5,040 Wh. Size the battery for your measured average load and required hours, including reserve.
- Tracked output: 4,000 W. Compare both running demand and startup demand before using any runtime estimate.
- Solar input limit: 2,100 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: 51 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
- unknown: —
Models: GRECELL
Compare nearby capacity records from the same brand, then check output, weight and missing fields. A larger battery does not establish device compatibility.
GRECELL 2400W
1,843.2 Wh · AC output: 2,400 W · Confidence: Verified
GRECELL 2200W
1,126.4 Wh · AC output: 2,200 W · Confidence: Estimated
GRECELL T-1000
999 Wh · AC output: 1,000 W · Confidence: Verified
Sources
- GRECELL 4000W product specifications (Official; checked 2026-08-20)