AA / AAA Battery Pole Blocker -Simple Power Switch

AA / AAA Battery Pole Blocker — The World's Simplest Power Switch

🔋 Stop Battery Vampires for 0.25 Grams

— Because some devices consider "OFF" more of a suggestion than a command

You know those devices.

The ones with an ON/OFF switch that somehow continue draining batteries while supposedly "off."

Remote controls.
Flashlights.
Measuring tools.
Random gadgets from 2011 that nobody remembers buying.

You put fresh batteries in them, forget about them for six months, and somehow they've converted all that stored energy directly into disappointment.

So I made this.

This tiny little wedge slips between the battery terminal and the contact, physically breaking the circuit and preventing any current from flowing.

No electronics.
No modifications.
No battery removal.

Just a microscopic piece of plastic standing between you and unnecessary battery drain.

⚙️ Features

• Works with AA and AAA batteries
• Physically disconnects the battery
• No tools required
• Reusable forever (or until it inevitably vanishes into the same dimension as missing socks)
• Fits in places where paper is too flimsy and cardboard is too annoying

🖨️ Printing Notes

• PLA works
• PETG works
• Pretty much anything works

Each blocker weighs approximately 0.25 grams.

For reference:

• That's less filament than most printers leave behind as poop.
• It's probably lighter than the support material from your last print.
• You could print dozens of them before noticing the spool getting lighter.

🧠 Why Not Just Use Paper?

You can.

You can also use a stick instead of a hiking pole.

Paper tears.
Paper folds.
Paper gets soggy.

This little blocker is nearly weightless, reusable, and survives being shoved into battery compartments repeatedly.

It's one of those things that's so simple it almost feels stupid.

Then you use it.

And suddenly all those "dead" batteries six months later aren't dead anymore.

🔋 Final Thoughts

This may be the least impressive thing I've ever designed.

It's literally a tiny L-shaped wedge.

No moving parts.
No magnets.
No hidden mechanisms.
No questionable food-safe claims.

Just 0.25 grams of plastic quietly protecting your batteries from devices that cannot be trusted.

Sometimes engineering is solving complicated problems.

Sometimes engineering is putting a tiny piece of plastic exactly where electricity wants to go and saying:

"No."