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Experiment With AA Batteries Shows Whether It Is Possible to Power a Desktop Computer and Reveals Real Limits of Energy Consumption
A content creator decided to test, in practice, what happens when using AA batteries as a power source for a desktop computer, in a recent experiment published on YouTube.
The test was conducted by the channel ScuffedBits, which replaced the traditional power supply of the PC with dozens of common batteries, aiming to understand the real limits of energy consumption.
The result drew attention: although it worked for a few moments, the system could not stay active for long due to electrical limitations.
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The experiment was carried out in a home environment, using a basic configuration desktop, with an entry-level Intel processor, two RAM modules, and an SSD with Windows 10.
Still, the equipment requires a conventional power supply of about 450 watts to operate normally, which already indicated a significant challenge.
How the Electrical Experiment with AA Batteries Was Set Up
To try to reproduce the necessary energy, the creator arranged the AA batteries in series.
However, right in the first test, a critical problem arose.
Although the voltage was adequate, the electric current — that is, the amount of energy delivered per second — was insufficient.
As a result, when trying to turn on the PC, the cooler briefly spun, but the system shut down almost immediately.
This behavior highlights an important point: it is not enough just to reach the correct voltage.
The ability to provide current steadily is essential for any power source that powers more demanding devices.
Why AA Batteries Fail in the Energy Consumption of a Desktop
Even after adjustments, the experiment showed that AA batteries cannot handle the peaks of energy consumption typical of a desktop computer.
During the startup process, known as boot, the system requires a high amount of current in a short period.
This peak is much higher than the average consumption of the equipment during normal operation.
Thus, even though the batteries store energy, they cannot release it quickly enough to meet this demand.
Additionally, even with the substitution for more powerful alkaline versions, the problem persisted.
The bottleneck was not only in the voltage but in the physical limitation of the batteries to provide current at high levels.
The Improvised Solution and the Use of 56 AA Batteries
In light of the initial failures, the creator resorted to an improvised solution.
He used thicker cables to reduce losses and added capacitors — components that store and release energy rapidly — to help with the startup spikes.
With that, the system was expanded until reaching a total of 56 AA batteries connected.
Additionally, it was necessary to use an external power supply just to give the initial boost to the system.
After this adjustment, the desktop computer finally managed to turn on and operate exclusively with the batteries for a short period.
How Long the Desktop Computer Worked with AA Batteries
The results were limited but revealing.
When opening Steam, the system remained on for only 52 seconds before shutting down completely.
In another test, a light game ran for about five seconds.
The classic Minesweeper managed to stay active for approximately four minutes until both the computer and the batteries stopped working simultaneously.
These numbers show, practically, how energy consumption directly impacts the viability of an alternative like this.
What the Electrical Experiment Teaches About Power Supply
The test leaves a clear lesson: although AA batteries can store energy, they are not suitable as a power source for devices that require high current, such as a desktop computer.
Desktops need stable and high current, measured in amperes, while common batteries operate at much lower levels.
Therefore, devices such as notebooks use lithium-ion batteries, specifically designed to support high discharge rates without compromising performance.
Can AA Batteries Replace Traditional Power Supplies?
In practice, no. The electrical experiment demonstrates that, although it is possible to turn on a system for a few moments, the solution is unfeasible for real use.
Still, the test serves an important role in illustrating fundamental concepts of electricity in an accessible way.
It shows that voltage and current are distinct yet equally important factors in any energy system.
Therefore, the idea of powering a desktop computer with AA batteries may seem curious, but it reinforces the practical limits of simpler technologies faced with modern demands for energy consumption.
Read more at: He Tried to Power a Computer with 56 AA Batteries — See the Result for Yourself
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