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Tom’s Hardware
Tom’s Hardware
Technology
Jowi Morales

Enthusiast rebuilds AA-battery-powered PC, sextuples run time to 30 minutes with 64 batteries — uses three voltage regulators in parallel to achieve stability, runs computer for over 30 minutes on 64 AA cells

Running a desktop PC on 64 AA batteries.

Creator and enthusiast ScuffedBits successfully ran a desktop PC for about five minutes on AA batteries alone and was even able to complete one round of Minesweeper on it. However, it seemed that that wasn’t long enough, so he decided to redo the project, intending to address the problems of the first build.

The biggest issue they fixed first was the high resistance of the tiny wires used to connect the batteries to the motherboard. Instead of replacing them, ScuffedBits modified the wiring of the battery packs to get around 25 volts, meaning that the PC would now require lower current, preventing instability because of the thin wiring. Of course, 25 volts isn’t good for the motherboard, so they also added three voltage regulators wired in parallel to get a consistent 12 volts until the batteries died. To further ensure that the system works, they also eliminated the alligator clips and soldered the wires directly to the capacitors that came from the original project.

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