How to properly power 3 diodes?

Question

Electronics

In short, I'm making interior lighting for the figurine. Made wiring for serial submission. The problem is that I don’t know what power source to make everything work, preferably without a resistor. Or, in general, how to do it right. Electricity is like a log =)

Answer 1

Without resistors, alas, it will not work. They either initially have to be soldered to the leg of the LED, or they still need to be bought and soldered on their own. This is necessary so that the LEDs are not supplied with a large current and they enlighten longer. With a high current, the LEDs will shine brighter, but in a short time (an hour or two, a day or two) they will go out and you will have to buy new ones.
To power the LEDs, you can use ordinary flat batteries.
The rectangles in the diagram are resistors.
Good luck to you :) If something is not clear - write, I will answer

Answer 2

resistor resistance can be calculated using the online calculator www.casemods.ru/services/raschet_rezistora.html