I may have to replace my truck battery. It was totally dead, and I’m trying to charge it. In looking for a replacement (Advance Auto and AutoZone the only stores in our little town), I found at Advance Auto: AutoCraft Silver Battery, Group Size 65, 750 CCA, $131.99, good reviews. The specs say “Auxiliary Battery; Requires special deep cycle battery.” My question is: is the original battery I have now considered a deep cycle battery? Should I have the charger setting on Deep Cycle?