Universal Battery Storage & Quick Tester

🔧 Designed by Yullian3D / @Yullian

📍 From the Basque Country – creating practical tools, playful learning aids, and unique objects for everyday life.

Inspired by design, music, nature, and the joy of making.

The Universal Battery Storage & Quick Tester is a 2-piece 3D-printed organizer designed to store and quickly test a variety of household batteries. It features dedicated slots for C (LR14), AA (LR6), AAA (LR03), D (LR20), 9V (6LR61), CR2032, CR2025, CR2450, LR44, and LR1130 batteries, ensuring they stay neatly arranged and easily accessible.

🔋 Optimized for IKEA Helmer: The design fits perfectly inside the drawers of the popular IKEA Helmer organizer, making it an excellent storage solution for workspaces, workshops, and home offices.

Key Features:

✔ Dual-Piece Design: Consists of a Battery Holder Tray (top part for battery placement) and a Testing Base (bottom part for quick testing functionality).

✔ Quick Testing Function: Insert the black probe (negative) of a multimeter into the “Black Probe” hole, place a thin conductive sheet (e.g., aluminum foil or parchment paper) between the two sections, and instantly check battery voltage by making contact with the positive terminal.

✔ Efficient & Time-Saving: No need to remove batteries from the organizer—just place them in the vertical slots with the negative side down and test them in seconds.

✔ Button Cell Testing: Coin cell batteries (CR2032, CR2025, CR2450, LR44, LR1130) can be tested easily from the side, allowing for quick and hassle-free voltage checks.

✔ Additional Storage Compartments: Includes two extra compartments—one wider slot for additional spare batteries and another narrow slot designed to hold small battery packs or cardboard sleeves with button cell batteries in a vertical position, keeping everything neatly stored.

✔ Compact & Precise Fit: With dimensions of 124mm x 234mm, it integrates seamlessly into IKEA Helmer drawers while remaining portable and easy to store.

✔ Safe & Organized Storage: Prevents accidental short circuits, keeps batteries securely in place, and reduces the risk of potential sparks or fire hazards caused by mixed or loose batteries.

✔ Battery Fit Consideration: Some battery brands may have slightly different diameters, making a few batteries fit more tightly. If necessary, a light sanding of the corresponding slot can help, though in most cases, this is not required.

✔ Negative Terminal Adjustment: Some batteries have a slightly recessed negative terminal. If the tester does not make proper contact, simply add a small piece of aluminum foil in that area to ensure proper conductivity.

✔ Perfect for DIYers & Technicians: Ideal for hobbyists, professionals, and anyone who frequently uses batteries in their devices.

✔ Durable & Printable in Various Materials: Designed for PLA, PETG, or ABS, ensuring a long-lasting and sturdy build.

Upgrade your workspace with this essential battery organizer and tester, making battery management easier and more efficient than ever!

If you enjoyed this design, follow me on MakerWorld to see what I create next! Your support really helps and keeps me motivated. Thanks!

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🧠 Follow for more smart, creative, and fun designs: @Yullian