So I was looking at tiny LEDs recently for a project that would require quite tiny lights about 3cm or so large. I found some really cheap ones https://tinyurl.com/y3sj5h4t in china. I notice even these small led lamps require 12 volts.
I understand 12 volts is approx 8 regular aa batteries (1.5 each). There is such a thing as a 12 volt aa looking battery / a smaller looking battery - though these seem uncommon and I would like to stick to a more common size if possible.
Is there a better way of doing all this? Are my assumptions even correct?
I am trying to acheive small light + long lasting (30hr+)+easy to get batteries+not having to load alot of them into the battery pack to power the light - say over 3.