Batches represents each process ran by the extension like order importation, offer update, etc.
You see all batches in
Amazon > Batches
In a batch view you can see a summary , related logs and all feeds, request sent during the batch.
Here yo use a summary of batch and batch status.
In this tab you can see all related logs for current batch
In this tab you can download xml files which contained all requests information. This is usefull for analyze and debug.