I have an simple 20mA 3v led that i will power with batteries. I want the led to last as long as possible ant size of batteripack is not an big issue.
I have played with some AA 1.5v 2500mA batteries. 6x solded together in series. I thought that would give me 12v and 15.000mA, but this gives me just 12v and 2.500mA.
But how can i configirate AA batteries to light up a led like this longest possible?
And how do i solder them together? I have seen an youtube video that helped me to solder 6 together in series, after i cooked my other batteries with a mistake.
It's a lot more difficult than i first thought to solder together some batteries.