Moteino battery life

Today I changed batteries on one of my Multi purpose Moteino sensors. I was surprised to see that the batteries had lasted for nearly 7 months (207 days). 17897040 seconds to be exact. The sensor was located in the bathroom, the warmest room in the house with about 25-26° C. I guess the high temperature had something to say when it came to the batteries capacity.

To compare, the sensor outside lasted 71 days, in shifting weather. Including below 0° C.