My problem is that I'm reporting the temperature every minute, which I won't be changing, so I'll never get a year off just a battery.
Some Lithium battery charging boards arrived yesterday for me to charge some 18650s pulled from a laptop battery. I also discovered a new version the same day I ordered which also have discharge protection for unprotected cells, so I'm waiting for them to arrive then I'll have a setup which will be...
Code:
Solar Panel
|
Charging/Protection Board -> ESP8266
|
18650 cell