Motorola Slpc System
com.motorola.slpc_sys
Would be weird if it’s not related to Motorola Modality Services (https://play.google.com/store/apps/details?id=com.motorola.slpc)
Helps your Motorola phone respond more intelligently to motion, phone orientation (e.g. face up/down) and stowed state (e.g in/out-of-pocket).
Has a noticeable impact on battery?
FYI : It uses location services.