This lithium cell 3.7V battery holder is excellent for use in any hobby or science project. Comes with wire leads for easy hook-up. Recommended for electronics applications, for use in science fair projects and more!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
Learn all about Newton’s Laws and Energy conservation.
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!
Build a model car that runs on hydrogen gas using a unique reversible fuel cell!
Build your own 10 inch kaleidoscope with this great kit!
Command robotic creations with this cool construction kit!