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Марія Бровінська
26 January 2026, 16:28
2026-01-26
An iOS developer has created a Blackout Math app for EcoFlow, Bluetti, Anker owners, and those who are first-time home battery buyers. It helps calculate backup power during blackouts
Ukrainian iOS developer Oleksiy Borunov from the independent Melissun’s Team has launched the Blackout Math app, a utility for calculating the autonomous operation of an apartment or house during power outages. In fact, the app answers a practical question: will a specific station be enough for a several-hour blackout?
Ukrainian iOS developer Oleksiy Borunov from the independent Melissun’s Team has launched the Blackout Math app, a utility for calculating the autonomous operation of an apartment or house during power outages. In fact, the app answers a practical question: will a specific station be enough for a several-hour blackout?
The idea for the project emerged amid regular blackouts, when the developer faced the problem of choosing batteries and portable power stations for the home from his own experience.
According to the author, during the first power outages, he had to independently deal with dozens of technical parameters: C-rate, DoD, real battery capacity, inverter efficiency, as well as read profile chats, forums, and watch video reviews. «There is a lot of information, but there was no simple and understandable tool that would summarize everything in one place,» the developer explains.
Initially, Blackout Math was created as an internal calculator «for myself», but later grew into a full-fledged application with a UI aimed at a wide audience.
What Blackout Math can do
The application is positioned as a utility for basic backup power design without deep engineering knowledge. It allows you to select a battery or portable station for a specific load; estimate the real consumption of an apartment, house or cottage; calculate the battery life; determine the battery charging time; and get simplified explanations of energy terms.
«You specify the battery type, capacity, and voltage — the application calculates the available energy, optimal discharge depth, and real battery capabilities,» the developer notes.
A separate module of the application is dedicated to battery parameters. The user can specify the battery type (LiFePO₄, Li-ion NMC/NCA, AGM, GEL, Lead Carbon, LTO, etc.), voltage (12 / 24 / 48 V), capacity in Ah;, depth of discharge (DoD), inverter efficiency.
Based on this data, Blackout Math automatically calculates the total energy in Wh; useful energy taking into account DoD; available energy adjusted for efficiency; and the actual number of kWh available for use.
In the application, you can add household devices (lighting, routers, refrigerators, laptops, boilers, boilers, washing machines, etc.), indicating the power in watts, the number of devices, and the operating time per day. «You add devices — light, refrigerator, router, laptop, boiler — and see the total load and a forecast of how many hours the battery will last,» notes Oleksiy.
The application shows the total consumption in Wh and kWh, the contribution of each device, the total load, and the compliance of this load with the capabilities of the selected battery.
For simplified scenarios, the user can enter the total power consumption, without detailing by device.
After configuring the battery and device list, Blackout Math calculates the number of hours of battery life; the impact of turning off individual devices; and the change in battery life under different DoD or efficiency parameters.
A separate module is dedicated to battery charging. Here you can set the charging current, capacity, desired SOC level. The application will show the real charging time, charging power, as well as a warning about potentially dangerous current.
This allows you to assess whether the battery will have time to charge between outages and whether a particular generator or power source is suitable.
Blackout Math is aimed at owners of EcoFlow, Bluetti, Anker portable stations; those who are choosing a battery for their home for the first time, users who want to calculate the autonomy of their home or office, people who want to clearly understand their energy capabilities during blackouts.
The app is already available in the App Store. An Android version is not currently planned.
The author emphasizes that he is not an energy engineer or electrician, and Blackout Math is a summary of personal experience, practice, and numerous calculations, created to simplify orientation on the topic of backup power.
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