I want my solar powered deck lights to stay on longer than the sun charged batteries will provide. I have 40 plus deck lights; each has its own solar cell, light sensor and AA battery. I want to eliminate the individual solar cells, light sensors and batteries and power all LED lights from a single power supply. The power supply would be turned on and off by a light sensor. The plan is to wire the + and - of the power supply into the circuit where the individual batteries were previously installed. Obviously, the individual LED lights operated at approx. 1.5v DC, but I have no idea what current the LED's consumed (there are no markings).
Considering that each LED deck light was its own entity (with its LED, resistor, and AA power supply), and I will be wiring all of the lights in parallel to the power supply, I need to know what kind of power supply (voltage and current) I need. Since I probably won't be able to locate a power supply with the exact voltage and current characteristics required, what will I have to do to make it work with the paralleled light circuits?
I am obviously not an electronics expert, and the more I read on series and parallel LED circuits, the less I know. Your experienced help will be greatly appreciated.