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Jackery Explorer 250 (South Africa) 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.
Quick answer: the Jackery Explorer 250 (South Africa) stores 257 Wh and delivers up to 200 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 2.0 hours. Last source check: 2026-08-27. This is an estimate, not a guarantee.
Capacity257 Wh
AC output200 W
Surge400 W
ChemistryLi-ion NMC
ConfidenceEstimated
Source regionglobal/general
Checked2026-08-27
Swipe table sideways
| Battery capacity | 257 Wh |
|---|---|
| Battery chemistry | Li-ion NMC |
| AC output | 200 W |
| Surge output | 400 W |
| DC output | 120 W |
| USB-C output | unknown |
| Solar input | 42 W |
| Weight | 3.1 kg |
| Confidence | Estimated |
| Lifecycle status | Unknown |
| Source region | global/general |
| Last verified | 2026-08-27 |
Jackery states directly that the Explorer 250 is the South African market equivalent of the US Explorer 240, differing in the 230V inverter and the two-prong SA plug; it is catalogued separately because its published capacity (257Wh) and AC voltage differ from the US SKU. Jackery's own runtime guidance for this unit is 257Wh x 0.85 divided by device power, which matches the 85% usable assumption. The unit has no USB-C port, so USB-C output stays unknown. At 257Wh it exceeds the 100Wh airline carry-on limit, as Jackery notes.
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.
Swipe table sideways
| Scenario | Default load | Estimate | Scenario confidence | Station page |
|---|---|---|---|---|
| Full-size refrigerator | 500 W at 33% | above tracked AC output | Estimated | Use calculator |
| CPAP without heated humidifier | 40 W at 100% | 4h 55m | Estimated | Use calculator |
| Starlink Mini | 32 W at 100% | 6h 30m | Estimated | Use calculator |
| Wi-Fi router | 12 W at 100% | 16h 58m | Estimated | Use calculator |
| LED TV | 100 W at 100% | 1h 58m | Estimated | Use calculator |
Calculator for this station
Adjust watts, duty cycle, reserve, output path, and startup surge with Jackery Explorer 250 (South Africa) prefilled from the source-linked specs above.
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Power station model
Battery capacity (Wh): 257 WhContinuous output rating (W): 200 WSurge output rating (W): 400 W
Estimated runtime3h 17m2h 3m – 4h 4mEstimated runtime: 3h 17m, 2h 3m – 4h 4m
Output path
Estimated runtime
3h 17mEstimated runtime: 3h 17mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.
Conservative2h 3m
Estimated3h 17m
Optimistic4h 4m
Conservative assumes harder conditions; optimistic assumes favorable conditions.
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
- Rated battery
- 257 Wh
- Usable energy
- 197 Wh
- 257 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 17m
- 197 Wh / 60 W = 3h 17m
- 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
3h 17mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.Usable energy197 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a
Runtime range
Conservative2h 3m
Estimated3h 17m
Optimistic4h 4m
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Usable energy197 Wh257 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 runtime3h 17m197 Wh / 60 W = 3h 17m
Assumptions
- 257 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.
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Good fit when
- Capacity is a compact class; use it for small electronics and short essentials rather than high-wattage appliances.
- Tracked AC output is 200 W, so high-draw appliances and tools need careful filtering.
- Tracked solar input is 42 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: usb-c output.
- Confidence is not marked verified; keep the linked source context visible before making a purchase or emergency plan.
Related Jackery Records
Nearby source-linked models from the same brand help you compare capacity, output, and unknown fields without leaving the data set.
Explorer 240 v2
256 Wh, 300 W AC output, confidence: Verified.
Explorer 240
240 Wh, 200 W AC output, confidence: Estimated.
Explorer 300 Plus
288 Wh, 300 W AC output, confidence: Verified.
Sources
- Jackery official Explorer 250 product page (official; checked 2026-08-27)