which of these do you think is the least bad as a failsafe power source in a small minimal computing/"solarpunk" electronics project? (the project is entirely solar powered otherwise; I just need a backup power source for the real-time clock chip. i've ruled out rechargeable batteries and supercapacitors for this purpose)
two alkaline button cells (LR44)
one lithium coin cell (CR2032 or similar)
two AAAs
something else?
Poll ended at .





