Enthusiast Runs Desktop PC on 56 AA Batteries — Intel System Lasts Less Than 5 Minutes Playing Minesweeper

YouTube creator ScuffedBits has demonstrated the practical limitations of using standard AA batteries to power a desktop PC, achieving just 4 minutes and 35 seconds of Minesweeper gameplay on an Intel-based system before power depletion.

The Experiment Setup

The creator replaced a standard 450-watt CX430 power supply with an ATX power supply plug from AliExpress that allows connection of 12V cables to alternative power sources. The test system consisted of an entry-level Intel CPU, two RAM sticks, and a 2.5-inch SATA SSD running Windows 10.

Battery Configuration Challenges

AA batteries output only 1.5 volts each, requiring 8 cells in series to achieve the necessary 12 volts. Initial attempts with 8-battery packs failed to power the system, with the creator measuring only 0.06 amps of current draw. The system's fan would briefly spin before shutting down completely.

Switching to alkaline batteries, which can output higher current and last longer than carbon cells, still resulted in the system turning on for only a couple of seconds before dying. The creator identified thin wiring as the culprit, unable to handle the voltage spikes demanded during system startup.

Final Configuration

The successful setup used 56 alkaline batteries arranged to provide adequate current capacity. To work around startup power demands, the creator used an external power supply to boot the PC, then switched to battery power once the game was running.

Performance Results

• Minesweeper (Easy): 4 minutes 35 seconds before battery depletion
• A Short Hike: Only 5 seconds of runtime
• Minesweeper with GPU: Approximately 9 seconds
• Minesweeper with battery-powered monitor: 2 minutes 14 seconds (using older batteries)

Technical Insights

The experiment highlights several key challenges in using AA batteries for PC power delivery:

1. Current capacity limitations: Standard alkaline AA batteries cannot sustain the high current demands of desktop components during startup and intensive operations
2. Voltage stability issues: The system requires stable voltage delivery, which is difficult to achieve with multiple parallel battery connections
3. Power density constraints: The energy density of AA batteries is insufficient for sustained desktop PC operation

The creator noted that launching Steam alone was enough to cause system shutdown, demonstrating how even basic PC operations can exceed the power delivery capabilities of this battery configuration.

Future Possibilities

Commenters suggested trying laptop components designed for lower power consumption, or testing more efficient processors like Snapdragon or Apple Silicon devices. These architectures are specifically designed for mobile power constraints and might achieve better results with battery power.

The experiment serves as a practical demonstration of why modern gaming laptops use specialized lithium-based batteries rather than standard alkaline cells, despite the latter's widespread availability and low cost.

This unconventional power delivery test underscores the remarkable efficiency improvements in modern mobile computing, where handheld devices can achieve gaming performance that would drain dozens of AA batteries in minutes when running desktop-class hardware.