What is the difference between F1 and F2 Terminals?

F1 and F2 represent the type of connector that is located on the top of the battery. F1 terminals are .187 inch wide (the contact towards the end narrows) and F2 terminals are .250 inch wide (the contact towards the end narrows). Most emergency light applications use a F1 terminal and most emergency power backup (UPS) applications use F2 terminals.

		FASTON CONNECTOR
F1
		FASTON CONNECTOR
F2

What other common terminals are available?

		NUT AND BOLT
NB
		THREADED INSERT
IT
		U CONNECTOR
U
		INSULATED WIRE LEADS
WL
		FASTON CONNECTOR
F1/0

Source: Terminals