7in1 Solar Kit Rechargeable Transformers DIY Kit Solar Energy Has Never Been So Fun! An Innovative Solar Science Kit that encourages children to exercise their sense of creativity and imagination. It features all snap together plastic parts (No Screws, No Tools Required). The Transforming Rechargeable Station has 2 output plugs; one for solar rechargeable and the other for battery recharging. Amazingly, the battery charging station can bring the selected unit to full power in about 5 seconds and the solar recharging station will fully recharge in approximately 120 seconds. The Solar Rechargeable Transformers is an innovative solar-powered science kit that can transform into seven different modules and energize via direct sunlight or micro rechargeable battery. Green Energy Create 7 Different Working Models Safe Eco-Friendly & Educational. Learn The Concept of Solar Energy Suitable for School Science Projects No Batteries Required Only Solar Powered Educational Do It Yourself Kit (DIY).