Pricey, but decided I'm going with this bad boy:
Braille Endurance Group 49 AGM Battery
Part Number Details
Braille Battery Part Number B10049
BCI Group 49
>150 Reserve Capacity (RC)
2,856 pulse cranking amps
1,520 cranking amps
1,115 cold cranking amps
100 amp hours
12V
Right-side positive terminal
13.9" long, 6.8" wide, 7.5" tall, 58 lbs
Braille Endurance Battery: Part B10049