Optima 12V 38AH Yellow Top® Starting Battery: Dual Purpose High Performing Automotive Battery! Optima Yellow Top Battery OPTIMA® YELLOWTOP® D51R Ultra high-performance SPIRALCELL TECHNOLOGY® AGM (absorbent glass mat) dual-purpose deep-cycle and starting battery. OPTIMA® YELLOWTOP® batteries have three times the cycling capability (rechargeability) with ultimate cranking power for your auto, car or truck to outperform traditional batteries. Perfect for powering heavy electrical loads, including winches, audio systems, inverters, and other demanding vehicle accessories and electronics. Lower internal resistance provides more efficient power output and faster recharges. Optima 8073-176 Features: Deep-Cycle & Cranking Power Up to Two Times Longer Life More than 15 Times the Vibration Resistance Completely Spillproof, Mountable in Virtually Any Position Maintenance-Free Faster Recharging Optimal Starting Power 300+ Discharge/Recharge Cycles Optima 8073-176 Specifications: Capacity (EN): 38Ah Voltage: 12 Volts CCA (EN): 460 Length:: 237mm Width: 129mm Height: 201mm Total Height: 227mm