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the zero at the end means its a cylindrical battery, and a 1 means a square, not sure if any other shapes or numbers are used

Funny you mention cars, my first car was a $35 Escort wagon with a burnt out clutch. I armed myself with a chilton manual and a set of craftsman tools not knowing even how to change the oil and had the transmission out in a couple days. It took longer to put back together, but it drove again...

For christmas my girlfriend bought me a mini laser projector which has gotten me back into the hobby a bit. I already spliced the speaker wire to a female headphone jack to get decent sound out it when synced, but I'd really like to swap the green diode to a violet and that project is a bit...

I've continued looking around for an answer and come up with some good things but was unable to find a maximum working voltage for the diode. Seems the diode was sourced from a canon projector but I can't find raw specs. I did find a couple reviews saying the laser would operate fine on 3.2v...

A cr123 puts out a consistent voltage throughout its discharge cycle, whereas a 16340 is fully charged at 4.2 volts and drops down to 3.2 volts when it's fully discharged. I'm curious if the varying voltage or overpowering would harm the laser

I've got a Dragon 447nm spartan 1w and the website lists the battery as a cr123. I'm wondering if I can use a couple 16340s instead. I see that a lot of pointers use 18650s which I know all about, but I'm wondering if the diode in my laser may be on the unstable side and require the more...