Litheli B300SE 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 Litheli B300SE 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: 2026-08-27. This is an estimate, not a guarantee.

Litheli B300SE portable power station
Capacity288 Wh
AC output300 W
Surgeunknown
Chemistryunknown
ConfidenceEstimated
Source regionglobal/general
Checked2026-08-27
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Key specifications for Litheli B300SE.
Battery capacity288 Wh
Battery chemistryunknown
AC output300 W
Surge outputunknown
DC outputunknown
USB-C output100 W
Solar inputunknown
Weight2.8 kg
ConfidenceEstimated
Lifecycle statusUnknown
Source regionglobal/general
Last verified2026-08-27
Chemistry, surge, DC and solar ceilings stay unknown because the listing publishes none of them.

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.

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Runtime starting-point estimates for Litheli B300SE.
ScenarioDefault loadEstimateScenario confidenceStation page
Full-size refrigerator500 W at 33%above tracked AC outputEstimatedUse calculator
CPAP without heated humidifier40 W at 100%5h 30mEstimatedUse calculator
Starlink Mini32 W at 100%7h 17mEstimatedUse calculator
Wi-Fi router12 W at 100%19h 0mEstimatedUse calculator
LED TV100 W at 100%2h 12mEstimatedUse calculator

Calculator for this station

Adjust watts, duty cycle, reserve, output path, and startup surge with Litheli B300SE prefilled from the source-linked specs above.

Loading calculatorPreparing calculator
Power station model
Battery capacity (Wh): 288 WhContinuous output rating (W): 300 WSurge output rating (W): n/a
Litheli B300SE
Estimated runtime3h 40m2h 18m – 4h 34mEstimated runtime: 3h 40m, 2h 18m – 4h 34m
Output path

Estimated runtime

3h 40mEstimated runtime: 3h 40m

This setup is tight. Reduce load, use DC where possible, or choose a larger station.

Conservative2h 18m
Estimated3h 40m
Optimistic4h 34m

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
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.

Source-Backed Next Steps

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 300 W, so high-draw appliances and tools need careful filtering.
  • USB-C output is tracked at laptop-class power, useful for direct DC charging when the device supports it.

Watch out for

  • Surge output is unknown, so do not assume compressor, pump, or power-tool startup will work.
  • Still unknown in the source-backed record: battery chemistry, surge output, dc output, solar input.
  • Confidence is not marked verified; keep the linked source context visible before making a purchase or emergency plan.

Related Litheli Records

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

B288

287 Wh, 300 W AC output, confidence: Estimated.

B218

216 Wh, 200 W AC output, confidence: Estimated.

B1000

1,069 Wh, 1,800 W AC output, confidence: Estimated.

Sources