An OPTIMA Red Top battery is the only battery specifically designed to
take abuse
Optima Yellow Top D31T
There's not another battery in the world that works as hard as the OPTIMA battery. Especially against the number one enemy: vibration. The unique SPIRALCELL® Technology used in the construction of the OPTIMA Yellow Top group 31 battery makes it an excellent power source for demanding heavy duty engine starting and deep cycle applications
Optima D31T (Commercial Deep Cycle)
Specifications:
• BCI Group Size: 31 (3/8"
Stud)
• Voltage: 12
• Cold Cranking Amps @ 0 F: 900
• Cranking Amps @ 32 F: 1125
• Reserve Capacity Minutes: 155
• Amp Hour (20 Hour Rate): 75
• Weight: 63 Lbs
Dimensions (Maximum Overall):
• Length: 12 13/16"
• Width: 6 1/2"
• Height: 9 3/8"