iCLoud Always Tracks All Devices?

This is probably the way iCLoud works but I noticed this...

I started playing with PHLocation using an iCLoud account.

I added my phone and my daughter's phone as devices. It worked well except for the fact that it was draining the battery on my old iPhone 4s quicker than I would like. My daughter's iPhone 5 with a better battery faired much better so I left it in PH location and then removed my iPhone.

I discovered I still was not getting through a work day on a charge. So yesterday I paused the iCloud service in PHlocation and my battery life returned to normal.

When iCloud is queried, does it automatically track all devices on the account regardless of whether they are in PFLocation as idevices?

Thanks,