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About
This app helps you accurately calculate power outage durations and battery performance. It factors in real-world conditions like battery discharge, inverter efficiency, and device consumption to provide realistic estimates for runtime and charging.
✓Calculate usable battery energy (Wh/kWh)
✓Factor in safe depth of discharge
✓Account for inverter efficiency and losses
✓Calculate real device energy consumption
✓Estimate actual device runtime
✓Provide accurate battery charging time estimates
✓Explain complex energy concepts clearly
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What's New in Blackout Math.Power Calculator
26.5
April 14, 2026
In this update we improved overall app performance, enhanced stability, and made small interface and user experience improvements to make the app faster, smoother, and more enjoyable to use.
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FAQ
What is Blackout Math?
Blackout Math is a specialized calculator designed to provide realistic estimates for power outage durations and battery performance. It goes beyond theoretical numbers to account for real-world factors like battery chemistry, inverter efficiency, and device usage.
How does Blackout Math calculate usable battery energy?
Blackout Math calculates usable energy by considering the battery's nominal capacity, voltage, and a safe depth of discharge specific to its chemistry. It also factors in losses from the inverter to give you a realistic usable energy figure in Wh and kWh.
Can Blackout Math estimate how long my devices will run?
Yes, you can add any household appliances by specifying their power, quantity, and usage time. The app will then calculate their real energy consumption and show each device's impact on the total load, determining the actual runtime.
Does Blackout Math provide charging time estimates?
Yes, Blackout Math provides accurate charging time estimates by considering battery chemistry and charging limits. It also offers warnings about unsafe charging currents and calculates charging power based on voltage and amperage.
Is Blackout Math suitable for planning portable power stations?
Absolutely. The app is perfect for choosing portable power stations from brands like EcoFlow, Bluetti, and Anker, as it helps estimate backup time and analyze energy usage for various devices.
What is the age rating for Blackout Math?
Blackout Math has an age rating of 4+, making it suitable for a wide range of users. It is available on both iPhone and iPad devices.
How often is Blackout Math updated?
The latest version of Blackout Math is 26.5, and it was last updated on April 14, 2026. This indicates a relatively active development cycle for the application.
Does Blackout Math have ads?
No, Blackout Math does not contain advertisements. It is a completely ad-free application, allowing for an uninterrupted user experience.
