I added a light and motion sensing unit to be able to use the charge on the battery.
When it is dark, the light sensing unit turns on the output for approx. 1,5 minutes with the help of the PIR motion sensor. When it is dark, if someone approaches to the circuit it turns on the led lights for 1,5 minutes.
Please do not hesitate to contribute on the circuit design if you have suggestion(s). Please do not forget that the circuit is made of used electronic parts.