Principle

Batteries can have different charging states.
Before beginning the experiment check whether the Ni-Cd accu is already discharged, so that the glow lamp does not light at the beginning of the experiment. If it glows, the Ni-Cd accu can be discharged faster via the 6-V-glow lamp.
On the other hand, the Ni-Cd accu could be so low discharged that a recharge time of 7 minutes is not enough. In this case the recharge time must be increased.

Benefits

• Experiment is part of a complete solution set with a total of 26 experiments for Renewable Energy solar cells, wind power, water power
• Safe experimentation: the lamp is protected against touch, the housing is well ventilated with the aid of holes and is only slightly heated
• Doubled learning success: Electric circuit diagram on top, real components can be seen at the bottom

Tasks

How can solar energy be stored?

Try to store the electric energy generated by a solar battery with a Ni-Cd accu.