Set of 4 single AA battery holders that snap together to form either parallel or series connection.
By using these 4 battery holders you can get 1.5V, 3V, 4.5V or 6V (series connection) or get 4x current at 1.5V (parallel connection).
Great, versatile AA battery holders for any electricity project.
This kit focuses on teaching children about electricity and how electronic devices work!
This SUPER Erector Construction set is one of the best you'll find anywhere!
Build your own windmill generator kit by recycling a plastic bottle!
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This is a classic demonstration toy of the powers of magnetic fields!
The Y-Ball Magnetic Puzzle is the perfect creativity tool for innovators, artists, engineers, writers, students, and you!
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