While attempting to modify these great little Skylights for use on a bicycle (semi-permanent mounting), I decided that an autopsy was in order. I needed to know how much "meat" there was that I could drill/shape to create a good mount. This particular unit had already given it's life to the project, so no further harm was done!

This is the PV side of the circuit board - only one solder tab remains. Circular battery area and printed circuit area can be seen through the board.

Here is the business side. The yellow cap makes the switch relatively water-tight, the battery sits in the big blank spot, welded and soldered into place. The inductor is the only component that didn't survive the rubber-ectomy. These things are sealed REALLY well, and that rubber material is tough.

Here I have a blinking red unit mounted to the seat-stay boss. this is a great location if there is no rack in the way. Gets tons of light for charging, has a great rear view, and is simply totally out of the way.

Took me several shots to catch it in mid-blink. This is broad daylight. At night the thing provides all the brightness you'd ever need. Blinks constantly for at least eight hours on a full charge, and to charge it, you just ride in daylight!

Back when the Sky Lights were "momentary" only, several of us came up with some solutions to fix the switch.