I'm trying to design a device that runs on battery that hopefully can run 20 years (change battery every 5 years is good too, but try to avoid that). The device is going to operate under the sun. what should aspect of the design should i be care. Let's say disregard the power consumption of mcu chip.
Battery selection: Battery Deration curve?
Voltage regulator: low quesiant current.
Temperauture that affect battery self discharge rate and leakage current.
Is there any current consumption stuff that i should be aware of that may consume power that i may not be aware of?
somebody suggest a vibration or an antenna to harvast some energy, or even solar panels. (Birds feces affect the solar panel a great deal too if i do solar panel)