Solar charge controllers are essential for ensuring the smooth functioning of a solar panel and its battery. This 3A model will keep your battery charged at a constant of 11.1V. Also features over-charge, over-discharge, overload, and short-circuit protection. Designed for lithium batteries.
Get one of the craziest and coolest kaleidoscopes around!
Learn about detective science through this fun fingerprinting kit!
See the solar system in action!
Shake the Pet Tornado clockwise and watch the mini tornado funnel form before your eyes!
Get swept away by this fantastic robot kit that uses vibrations to move!
This is a classic demonstration toy of the powers of magnetic fields!
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