Batman has 3 months of prep, and during this period the Sentinels will not disturb him.
Batman starts with knowledge of the Sentinel technology (He has already infiltrated Trask Industries beforehand). He already knows Sentinels are not alive, hence he need not hold back his punches.
Battle starts out in apocalyptic wasteland after the 3 months of prep.
Question: Will Batman be able to defeat all the Sentinels by himself?