<P> Deep - cycle lead - acid batteries generally fall into two distinct categories ; flooded ( FLA ) and valve - regulated lead - acid ( VRLA ) , with the VRLA type further subdivided into two types , Absorbed Glass Mat ( AGM ) and Gel . The reinforcement of absorbed glass mat separators helps to reduce damage caused by spilling and jolting vibrations . Further , flooded deep - cycle batteries can be divided into subcategories of Tubular - plated Opzs or flat plated . The difference generally affects the cycle life and performance of the cell . The structural difference between deep - cycle batteries and cranking batteries is in the lead battery plates . Deep cycle battery plates have thicker active plates , with higher - density active paste material and thicker separators . Alloys used for the plates in a deep cycle battery may contain more antimony than that of starting batteries . The thicker battery plates resist corrosion through extended charge and discharge cycles . </P>
difference between deep cycle and starting marine battery
Alloys used for the plates in a deep cycle battery may contain more antimony than that of starting batteries