25 hp DC Motor

Assuming your DC motor run on 100V DC (most likely), and batteries are 12V type, your motor effieciency is 85%, and the motor capacity is 200Ah (not 200A):

Your best case with fully charged up batteries is

Current consumption = 25*746/0.85/100= 219 A.

Since the DC motor run on 100V , you will only be able to use 8 batteries in series at most to get 96V

So, your best case batteries will only last 200/219= 0.91 hour .

Bravo88.