I`m not sure about batch process.
But I always trim em to the start of the beat, if it is a drum loop.
Someimes I`ll EQ em and resave to get them sounding more natural.
But really there should be no batch process on your samples as they should be kept as raw as possible so you can customise them to the sound of whatever track you are using.
Batch processing leads to a stagnated and cookie cutter sound. Ok if you just wanna churn out a bunch of stuff that all sounds the same I suppose.