Battery lead OPTIMA BlueTop 12V 66Ah 845 has BTDC 5.0
BLUETOP® D27M | OPTIMA Batteries
Amazon.com: Optima Batteries 8016-103-FFP D34M BlueTop Starting and Deep Cycle Marine Battery : Automotive
Deep Cycle Lithium Ion Marine Battery Group 31 Dual Terminal Replaces Optima D31M Blue Top 1200CCA - Walmart.com
OPTIMA BlueTop 12V 75Ah 975 lead battery has BTDC 5.5
Optima Blue Top Deep Cycle D900M Battery 9016-103 SC34DM [SC34DM BLU] - $199.95 : Optima Batteries: Best Prices & Free Shipping Red Top Yellow Top Blue Top
Optima Blue Top D31M Deep Cycle Marine Battery - Walmart.com