Moteino battery drain

I have recently seen that some standard alkaline AA batteries drain pretty quickly compared to others. Some of my Moteinos manage to run for 100+ days with two standard AA batteries, but lately I have replaced batteries on the outside sensor after 3-7 days!
 

It's obviously colder outside, but I have used other AA batteries with the outside sensor lasting up to 71 days. Now I will test out some AA non-rechargeable lithium batteries and see how that works compared to alkaline. They have a shelf life of up to 10 years and should manage -40 to +50 'C. Also, they are said to perform best under high drain, so we will see how they manage under low drain...

To be continued...   

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