Handheld gamers obsess over battery life like it’s a matter of survival. We swap cells, carry backup chargers, and baby old consoles through one more dungeon before the screen flickers off. Battery anxiety is real, especially for something like the Game Boy Advance SP, where the original cell barely lasted through a single flight. This mod responds to that anxiety by going completely overboard, bolting a GBA SP onto a DeWALT power-tool battery big enough to run drills and apparently several full-length RPGs.

The project comes from a Reddit build where a modder mounts a GBA SP onto a DeWALT XR FLEXVOLT lithium-ion pack, creating what commenters immediately dubbed the “jobsite Game Boy.” The console’s original tiny battery is gone, replaced by a buck converter that steps down the tool battery’s eighteen volts to the four-ish volts the SP expects. The result looks like Nintendo and DeWALT secretly collaborated on a rugged portable for construction workers.

Designer: Bangoo H

The battery is rated at nine amp-hours at 18 volts, which works out to around 162 watt-hours compared to the few watt-hours of the original cell. Reddit did the math and estimated hundreds of hours of runtime, with one commenter joking that the battery might finally die fifteen minutes after the nukes start flying and another suggesting you could finish your entire childhood backlog before needing a recharge.

The wiring is straightforward if you squint. The modder dropped a buck converter into the SP where the original battery lived, wired it to the battery contacts via a dummy cell, then connected that to a custom holder that slides onto the DeWALT pack’s rail. Charging still happens through the regular DeWALT charger, so the Game Boy just thinks it has an absurdly large external battery that never quits.

The aesthetics are what really sell it. The SP shell has been resprayed in black with yellow buttons, and the lid wears a big DeWALT logo, so when it’s closed, the whole thing reads like a tiny power-tool accessory. Open it up, and the screen pops out of the battery like a work light. It even has a little Nintendo badge on the back, making the mashup feel weirdly official.

Of course, the DeWALT pack turns the SP from a pocketable handheld into a luggable brick. Commenters joked about dropping it on your face in bed or finally silencing anyone who says the SP is too small for their hands. It’s not exactly travel-friendly unless your idea of travel involves rolling a toolbox around, but it does give the console a much larger grip.

The DeWALT GBA SP mod turns battery anxiety into a punchline and shows how far you can push an idea just because it makes you laugh. By strapping a beloved handheld to a power-tool battery, it mixes serious electrical work with a sense of humor, reminding us that modding can be joyful and completely unnecessary in the best possible way.

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