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Yeah I have lithium cr123's and the holders for them and might get some rechargeable ones but still, this diode is doing the same thing with those which is odd. I haven't seen them do this with other diodes either so I think I might have just had some bad luck.

Yeah I understood chemical consumer batteries have their issues for a very long time, my main reason for using this is basically because I wanted something that can be easily and cheaply recharged on the fly with cells that are very common, as opposed to using more of a specialist 'mail order'...

Okay thanks for the response, albeit patronising, it's useful. Have a good day.

Recently I smashed a laptop screen and decided to pull it apart to see how it works. Inside are a pair of sheets of plastic called horizontal polarization filters. I found that shining any laser through them creates a wonderful line effect. I was just wondering how this works, and if there are...

Long time lurker first time poster - anyway, I have a ~4v 50mw green laser with a driver from China hooked up to a 9v battery, and the power is stepped down with an adjustable buck converter to prevent the 9v from overpowering the circuit and heating. Anyway the laser runs great for a few...