I am mostly just trying to educate myself.
I am trying to build 18650 solar light. I would like the lights to come on when it gets dark and go off when the batteries reach a set voltage or when it gets light out.
LED = 12V * 50mA = 0.6W
I have 3 solar panels to choose from:
Solar Panel 2.5W 5V/500mAh (x2)
Solar Panel 12V 3W
I have some p-channel mosfets (9v gate) and I have some logic level P channels on the way.
I have a few cheap 18650s, and I hope to have some Panasonic 3400s fairly soon.