Home made device for charging cell or smart phones by sun

Batteries are charging by solar panel.

Purpose of the switch is to disconnect the electronic device when not in use to save batteries.

Electronic part cost less than $ 1.

Charging "doctor", alternately shows voltage and current

Output voltage is exactly 5 V

Charging current is 0.56 A

Among flowers solar panel can capture enough photons that the device can charge cell phone.