Openai/69443d91-03b0-8013-a3d5-292b60eb039c

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This conversation was exported from ChatGPT[1]

gpt-5-2 edit

User: Can you generate a graph with load on y axis and time on x axis for a 4.5kw hour battery so I can have a chart of how l… edit

Can you generate a graph with load on y axis and time on x axis for a 4.5kw hour battery so I can have a chart of how long the battery will last for varying loads

Assistant: I’ve generated a chart that shows load kW on the Y-axis and time hours on the X-axis for a 4.5 kWh battery. edit

I’ve generated a chart that shows load (kW) on the Y-axis and time (hours) on the X-axis for a 4.5 kWh battery.

How to read this graph edit
  • Each point on the curve represents how long the battery will last at a constant load.
  • The relationship is: Runtime (hours)=4.5 kWhLoad (kW)\text{Runtime (hours)} = \frac{4.5\ \text{kWh}}{\text{Load (kW)}}Runtime (hours)=Load (kW)4.5 kWh​
  • Higher load → shorter runtime
  • Lower load → longer runtime
Example values (approx.) edit
  • 0.5 kW load → ~9 hours
  • 1.0 kW load → ~4.5 hours
  • 2.0 kW load → ~2.25 hours
  • 3.0 kW load → ~1.5 hours
  • 4.5 kW load → ~1 hour
Notes edit
  • This assumes 100% usable capacity and constant load.
  • Real systems may run slightly shorter due to inverter losses, battery reserve limits, and efficiency (typically 85–95%).

If you want, I can:

  • Add efficiency losses (e.g., 90%)
  • Create a table you can export to Excel
  • Re-plot it with specific loads you care about (e.g., 300 W, 800 W, 1.2 kW, etc.)

References edit

  1. "Battery load duration graph". ChatGPT. Retrieved 2025-12-18.