Garmin CT10 and Practicing

Hi all,

I just got the 3 pack and looking to add it to my putter and 2 wedges. My question is regarding practicing and battery life. From the manual, it states that it is asleep until it recognizes both movement (upright) and light.

What does practicing in a well lit room on putting do to the device? I'm worried that a lot of indoor practicing will sacrifice the battery life. (Yes, I know the battery can be replaced.)

Similar question involves range practice. Is the device, like a cell phone constantly searching for a signal, using up battery searching for a watch that is not there?

I'm really trying to understand how I can take care of the devices and best practices.