Text on Motion when Not Present - False Alarms ? & Battery % means?

I have a modified app like “Text on Motion when Not Present” and am getting - False Alarms ? & Battery % means?
Anybody having something similar -

On 11/24, I am not Home and get texts @1:13PM ET & 2:57PM
On 11/29, I am Home and get text @ 4:18PM

My Presence Battery is at 38% - looks like I need to start looking,
Motion Battery is 88%

I am guessing battery feature. Supposed to last how long!